Post-1925 amplifying valves, frequency changers and signal diodes |
Type | Description | Filament | Anode | Auxillary Grid | Grid | ra | gm/go | RL | Po | Rk | | Year |
| | Volts | Amps | Volts | mA | Volts | mA | -V | kΩ | mA/V | kΩ | Watts | Ω | Type | Ref | |
Mullard |
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
1A7G | Heptode FC | 1.4* | 50mA | 90 | 0.6 | 45 | 0.7 | 60.0 | 0.25⅄ | | | | | IO+tc | 76 | |
1C5G/GT | Output pentode | 1.4* | 0.10 | 90 | 7.8 | 90 | 3.5 | 7.5 | 115.0 | 1.55 | 8.0 | 0.24 | | IO | 87 | |
1H5G | Diode & high-μ triode | 1.4* | 50mA | 90 | 0.15 | - | - | 0 | 240.0 | 0.275 | | | | IO+tc | 91 | |
1N5G | RF pentode | 1.4* | 50mA | 90 | 1.2 | 90 | 0.30 | 0 | 1.5MΩ | 0.75 | | | | IO+tc | 77 | |
| Double diode (IH) | 2.0 | 90mA | 90 | 0.5 | - | - | - | - | - | | | | B5 | 3 | 1936 |
2D4 | Double diode | 4.0 | 0.65 | 200 | 0.8 | - | - | - | - | - | | | | B5+tc | 17 | 1934 |
| Double diode | 4.0 | 0.65 | 140 | 0.8 | - | - | - | - | - | | | | B5 | 3 | 1934 |
| Double diode (separate cathodes) | 4.0 | 0.35 | 140 | 0.8 | - | - | - | - | - | | | | B7 | 21 | 1937 |
| Double diode | 13.0 | 0.20 | 200 | 0.8 | - | - | - | - | - | | | | Ct5+tc | 2 | 1934 |
| Double diode | 13.0 | 0.20 | 200 | 0.8 | - | - | - | - | - | | | | Ct5 | 1 | 1935 |
| Double diode | 13.0 | 0.20 | 200 | 0.8 | - | - | - | - | - | | | | B5 | 3 | 1935 |
| Output beam tetrode | 1.4* | 0.15* | 110 | 10.0 | 110 | 1.4 | 6.6 | 100.0 | 2.20 | 8.0 | 0.4 | | IO | 85 | |
|
6A7 | Heptode FC | 6.3 | 0.30 | mix250 osc100 | 3.5 9.5 | 100 | 2.7 | 3.0 | 360.0 | 0.55⅄ | | | | USM7 +tc | 1 | |
| Heptode FC | 6.3 | 0.30 | mix250 osc100 | 3.5 9.5 | 100 | 2.7 | 3.0 | 360.0 | 0.55⅄ | | | | IO+tc | 1 | |
| Double diode | 6.3 | 0.30 | 117 | 9.0 | - | - | - | - | - | | | | B7G | 18 | |
6AS6 | Dual control pentode for switching, gating control or FC | 6.3 | 0.175 | 120 | 5.5 | 120 | 3.5 | 2.0 | | 3.50 | | | | B7G | 32 | |
| Medium-μ triode | 6.3 | 0.30 | 250 | 8.0 | - | - | 8.0 | 10.0 | 2.00 | | | | IO | 20 | |
| Output pentode | 6.3 | 0.70 | 285 | 38.0 | 285 | 12.0 | 22.0 | 78.0 | 2.55 | 7.0 | 4.5 | 440 | IO | 36 | |
6J5G/GT | Medium-μ triode | 6.3 | 0.30 | 250 | 9.0 | - | - | 8.0 | 7.70 | 2.60 | | | | IO | 20 | |
| RF pentode | 6.3 | 0.30 | 250 | 2.0 | 100 | 0.50 | 5.0 | 1.5MΩ | 1.25 | | | | IO+tc | 8 | |
6K7G/GT | VM RF pentode | 6.3 | 0.30 | 250 | 10.5 | 125 | 2.6 | 3.0 | 600.0 | 1.65 | | | | IO+tc | 8 | |
6K8G/GT | Triode hexode FC | 6.3 | 0.30 | mix250 osc100 | 2.5 3.8 | 100 | 6.0 | 3.0 | 600.0 | 0.36⅄ | | | | IO+tc | 4 | |
6L6G | Output beam tetrode | 6.3 | 0.90 | 315 | 3.0 | 225 | 6.0 | 13 | 77.0 | 3.75 | 8.5 | 5.5 | 315 | IO | 36 | |
6N7GT | Class B double triode Class B amplifier | 6.3 | 0.80 | 250 300 | 3.0 35.0 | - | - | 5.0 0 | 23.0 | 1.60 | 8.0 | 10.0 | | IO | 22 | |
|
| Double diode triode | 6.3 | 0.30 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | IO+tc | 29 | |
| VM RF pentode | 6.3 | 0.30 | 250 | 9.2 | 100 | 2.6 | 3.0 | 800.0 | 2.00 | | | | IO | 10 | |
6SN7GT | Medium-μ double triode | 6.3 | 0.60 | 250 | 9.0 | | | 8.0 | 7.7 | 2.60 | | | | IO | 26 | |
| Output beam tetrode | 6.3 | 0.45 | 315 | 35.0 | 225 | 6.0 | 13.0 | 77.0 | 3.75 | 8.5 | 5.5 | 315 | IO | 36 | |
12A6G | Output beam tetrode | 12.6 | 0.15 | 250 | 30.0 | 250 | 3.5 | 12.5 | 70.0 | 3.0 | | | | IO | 36 | |
12J7GT | RF pentode | 12.6 | 0.15 | 250 | 2.0 | 100 | 0.50 | 5.0 | 1.5MΩ | 1.25 | | | | IO+tc | 8 | |
12K7GT | VM RF pentode | 12.6 | 0.15 | 250 | 10.5 | 125 | 2.6 | 3.0 | 600.0 | 1.65 | | | | IO+tc | 8 | |
12K8GT | Triode hexode FC | 12.6 | 0.15 | mix250 osc100 | 2.5 3.8 | 100 | 6.0 | 3.0 | 600.0 | 0.36⅄ | | | | IO+tc | 4 | |
12L6GT | Output beam tetrode | 25.0 | 0.30 | 200 | 55.0 | 110 | 7.0 | 8.0 | 30.0 | 9.5 | 3.0 | 4.3 | 160 | IO | 36 | |
12Q7GT | Double diode triode | 12.6 | 0.15 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | IO+tc | 29 | |
| VM RF pentode | 12.6 | 0.15 | 250 | 9.2 | 100 | 2.6 | 3.0 | 800.0 | 2.00 | | | | IO | 10 | |
| Medium-μ double triode | 12.6 | 0.30 | 250 | 9.0 | | | 8.0 | 7.7 | 2.60 | | | | IO | 26 | |
|
25A6G | Output pentode | 25.0 | 0.30 | 160 | 36.0 | 120 | 12.0 | 18.0 | 42.0 | 2.40 | 5.0 | 2.2 | 450 | IO | 36 | |
25L6GT | Output beam tetrode | 25.0 | 0.30 | 200 | 55.0 | 110 | 7.0 | 8.0 | 30.0 | 9.5 | 3.0 | 4.3 | 160 | IO | 36 | |
35L6GT | Output beam tetrode | 35.0 | 0.15 | 200 | 43.0 | 200 | 2.0 | 8.0 | 34.0 | 6.10 | 5.0 | 3.0 | 180 | IO | 36 | |
| Output pentode | 6.3 | 0.70 | 285 | 38.0 | 285 | 12.0 | 22.0 | 78.0 | 2.55 | 7.0 | 4.5 | 440 | USM6 | 8 | |
43 | Output pentode | 25.0 | 0.30 | 160 | 36.0 | 120 | 12.0 | 18.0 | 42.0 | 2.40 | 5.0 | 2.2 | 450 | USM6 | 8 | |
50L6GT | Output beam tetrode | 50.0 | 0.15 | 250 | 55.0 | 110 | 7.0 | 8.0 | 30.0 | 9.50 | 3.0 | 4.2 | 160 | IO | 36 | |
| Output triode | 4.0 | 1.00 | 200 | 30.0 | - | - | 28.0 | 1.25 | 4.00 | 4.0 | 1.0 | | B5 | 1 | 1931 |
75 | Double diode triode | 6.3 | 0.30 | 250 | 0.90 | - | - | 2.0 | 91.0 | 1.10 | | | | USS6+tc | 4 | |
78 | VM RF pentode | 6.3 | 0.30 | 250 | 10.5 | 125 | 2.6 | 3.0 | 600.0 | 1.65 | | | | USS6+tc | 2 | |
| Output triode | 4.0 | 1.00 | 200 | 20.0 | - | - | 11.0 | 3.0 | 4.00 | 6.0 | 0.55 | | B5 | A | 1929 |
152T | Output triode | 2.5 | 1.50 | 150 | | - | - | | | | | | | B4+st | 25 | 1929 |
| AF triode | 4.0 | 0.65 | 200 | 9.0 | - | - | 6.0 | 7.5 | 2.00 | | | | B4+st | 25 | 1929 |
|
| AF triode (Improved version) (further improved) | 4.0 | 1.00 1.00 0.65 | 200 200 200 | 8.0 8.5 12.0 | - | - | 8.5 8.5 9.0 | 6.65 4.85 4.7 | 2.40 3.30 3.40 | | | | B5 | 1 | 1929 1930 1935 |
| Detector or AF triode (Improved version) | 4.0 | 1.00 0.65 | 200 200 | 5.5 5.5 | - | - | 3.3 5.6 | 9.0 9.3 | 2.80 2.75 | | | | B5 | 1 | 1933 1935 |
| Detector or AF triode (Improved version) (further improved) | 4.0 | 1.00 1.00 0.65 | 180 200 250 | 4.5 4.0 6.5 | - | - | 3.0 4.0 4.5 | 14.0 12.0 11.5 | 2.50 3.00 3.50 | | | | B5 | 1 | 1929 1930 1935 |
| Detector triode | 4.0 | 1.00 | 200 | 2.8 | - | - | 3.0 | 21.8 | 2.20 | | | | B5 | 1 | 1935 |
| Detector or AF triode (Improved version) | 4.0 | 1.00 0.65 | 200 200 | 1.8 2.0 | - | - | 2.0 2.0 | 34.0 36.0 | 2.20 2.00 | | | | B5 | 1 | 1931 1935 |
| Detector or RCC triode | 4.0 | 0.65 | 200 | 1.35 | - | - | 1.5 | 33.0 | 3.60 | | | | B5 | 1 | 1935 |
4671 | Acorn UHF triode | 6.3 | 0.15 | 180 | 4.5 | - | - | 5.0 | 12.5 | 2.00 | | | | 5AA | 1 | 1940 |
4672 | Acorn UHF pentode | 6.3 | 0.15 | 250 | 2.0 | 100 | 0.7 | 3.0 | 1.5M | 1.40 | | | | 7AA | 1 | 1940 |
5636 (SQ) | See EF730 | | | | | | | | | | | | | - | - | |
| UHF oscillator triode | 6.3 | 0.15 | 100 | 8.5 | - | - | 1.25 | 4.7 | 5.80 | | | | B8D/F | 16 | |
| | | | | | | | | | | | | | - | - | |
5899 (SQ) | | | | | | | | | | | | | | - | - | |
|
| | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
| Double power triode | 6.3 | 2.5 | 100 | 100.0 | | | | 300Ω | 6.5 | | | 300 | IO | 145 | |
6153T | Triode hexode for television | 6.3 | 0.95 | h250 t100 | 12.7 16.0 | 100 | | 2.0 2.0 | | 3.00 3.80 | | | | Ct8 | 34 | 1939 |
6205 (SQ) | See EF734 | 7.0 | 0.20 | | | | | | | | | | | - | - | |
AC 042 | Output triode | 2.0* | 2.00 | 300 | 50.0 | - | - | 38.0 | 1.2 | 5.00 | 2.3 | 3.5 | | B4 | 1 | 1937 |
| Output triode (Improved version) (further improved) | 4.0* | 0.70 1.00 1.00 | 200 250 300 | 30.0 48.0 50.0 | - | - | 32.0 20.0 38.0 | 1.15 1.2 | 3.50 6.80 5.00 | 2.5 2.5 2.3 | 1.0 2.7 3.5 | 950 760
| B4 | 1 | 1930 1933 |
AC 054 | Output triode (Class AB push-pull) | 4.0* | 1.00 | 250 500 500 | 48.0 24.0 20.0 | - | - | 22.0 68.0 70.0 | 1.7 | 3.50 | 1.6 11.5 12.0 | 1.5 5.3 15.0 | - | B4 | 1 | 1930 |
AC 064 | Output triode | 4.0* | 1.00 | 200 | 20.0 | - | - | 21.0 | 2.0 | 3.00 | 5.0 | 0.62 | | B4 | 1 | 1930 |
AC 084 | Output triode | 4.0* | 1.00 | 300 | 17.0 | - | - | 22.0 | 7.3 | 1.10 | | | | B4 | 1 | 1930 |
AC 084N | Output triode | 4.0* | 1.00 | 100 | 21.0 | - | - | 0 | 2.8 | 2.50 | 4.0 | | | B4 | 1 | 1930 |
| Output triode | 4.0* | 1.00 | 200 | 11.0 | - | - | 14.0 | 2.85 | 3.50 | 6.0 | 0.4 | | B4 | 1 | 1930 |
|
| Output pentode (Push-pull) | 4.0 | 2.10 | 250 250 | 72.0 45.0 | 250 250 | 8.0 5.1 | 7.0 | 20.0 | 14.50 | 3.5 5.0 | 8.0 14.5 | 90
| B7+tc | 5 | WW2 |
AP4 | Acorn UHF pentode | 4.0 | 0.20 | 250 | 2.0 | 100 | 0.7 | 3.0 | 3.5M | 1.40 | | | | 7AA | 1 | 1936 |
AT4 | Acorn UHF triode | 4.0 | 0.25 | 200 | 4.5 | - | - | 6.0 | 12.5 | 2.00 | | | | 5AA | 1 | 1936 |
| Double diode output pentode | 44.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.50 | 4.0 | 167 | Ct8+tc | 13 | 1939 |
| Double diode output pentode | 44.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.50 | 4.0 | 167 | IO+tc | 15 | 1938 |
| Triode hexode FC | 7.0 | 0.20 | h250 t100 | 3.0 3.3 | 100 | 3.0 | 2.0 | 1.3M | 0.65⅄ 2.80 | | | | IO+tc | 3 | 1940 |
| Output pentode | 33.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.50 | 4.0 | 167 | Ct8+tc | 4 | 1938 |
CL6 (replaced by CL4) | Output pentode (Class AB1 push-pull) | 35.0 | 0.20 | 200 250 | 45.0 36.0 | 100 125 | 5.5 12.5 | 9.5 | 19.0 | 8.00 | 4.50 7.00 | 4.0 13.5 | 180 | Ct8+tc | 4 | 1938 |
CL30/20P4 | Line scan output beam tetrode | 38.0 | 0.20 | 400 | | 250 | | | | | | | | IO | 38 | |
| Output pentode | 33.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.50 | 4.0 | 167 | IO | 36 | 1940 |
DA1 | Miniature triode | 2.0* | 50mA | 40 | 0.25 | - | - | 0.25 | 80.0 | 0.40 | | | | Sm4 | 1 | 1936 |
DA2 | Miniature output triode | 2.0* | 50mA | 40 | 1.25 | - | - | 2.15 | 13.6 | 0.50 | | | | Sm4 | 1 | 1936 |
|
DA3 | Miniature output triode | 2.0* | 50mA | 40 | 1.8 | - | - | 2.8 | 7.6 | 0.62 | | | | Sm4 | 1 | 1936 |
DA90 | Single diode | 1.4* | 0.15 | 117 | 0.50 | - | - | - | - | - | | | | B7G | 13 | |
| Single diode triode | 1.4* | 50mA | 90 | 0.14 | - | - | 0 | 240.0 | 0.275 | | | | Ct8+tc | 32 | 1939 |
DAC31 | Single diode triode | 1.4* | 25mA | 120 | 0.75 | - | - | 0 | 100.0 | 0.40 | | | | IO+tc | 91 | PW |
| Single diode triode | 1.4* | 50mA | 90 | 0.15 | - | - | 0 | 240.0 | 0.275 | | | | IO+tc | 91 | PW |
DAF70 | Single diode pentode | 1.25* | 25mA | 67.5 | 1.0 | 67.5 | 0.25 | 0 | 400.0 | 0.44 | | | | B8D/F | 1 | |
| Diode AF pentode | 1.4* | 50mA | 90 | 2.7 | 90 | 0.63 | 0 | 500.0 | 0.72 | | | | B7G | 5 | |
| Diode AF pentode | 1.4* | 25mA | 25mA | 67.5 | 0.17 | 67.5 | 1.5 | | 0.17 | | | | B7G | 5 | |
DAL5 | Double diode | 6.3 | 0.30 | 17 | 9.0 | - | - | - | - | - | | | | B7G | 18 | |
DAS1 | AF tetrode (deaf aid) | 2.0* | 60mA | 120 | 1.5 | 60 | | 2.7 | 500.0 | 0.58 | | | | Sm4+tc | 2 | 1938 |
DB1 | Miniature triode | 1.5* | 70mA | 40 | 0.25 | - | - | 0.25 | 80.0 | 0.40 | | | | Sm4 | 1 | 1939 |
DB3 | Miniature triode | 1.5* | 70mA | 40 | 1.8 | - | - | 2.8 | 7.6 | 0.62 | | | | Sm4 | 1 | 1939 |
|
DBC31 | Double diode triode | 1.4* | 50mA | 120 | 1.6 | - | - | 1.5 | 28.0 | 0.90 | | | | IO+tc | 88 | PW |
DBS1 | Miniature tetrode | 1.5* | 70mA | 120 | 1.5 | 60 | | 2.7 | 500.0 | 0.58 | | | | Sm4+tc | 2 | 1939 |
DC51 | Triode (deaf aid) | 1.5* | 67mA | 45 | 0.34 | - | - | 0 | 66.0 | 0.38 | | | | Sm4 | 1 | 1939 |
| RF double triode | 1.4* | 0.22* | 90 | 3.7 | | | 2.5 | 8.3 | 1.80 | | | | B7G | 8 | |
DD51 | Output triode (deaf aid) | 1.5* | 67mA | 45 | 1.7 | - | - | 3.0 | 10.0 | 0.50 | | | | Sm4 | 1 | 1939 |
DF1 | VM RF pentode | 1.4* | 50mA | 90 | 1.2 | 90 | 0.3 | 0/4 | 1.5M | 0.75 | | | | Ct8+tc | 26 | 1939 |
DF31 | Pentode | 1.4* | 25mA | 90 | 1.2 | 90 | 0.25 | 0 | 2M | 0.70 | | | | IO+tc | 85 | PW |
DF32 | VM pentode | 1.4* | 50mA | 90 | 1.4 | 90 | 0.3 | 1.5 | 1.5M | 1.10 | | | | IO+tc | 85 | PW |
| VM pentode | 1.4* | 50mA | 90 | 1.2 | 90 | 0.3 | 0/4 | 1.5M | 0.75 | | | | IO+tc | 77 | PW |
DF51 | Pentode (deaf aid) | 1.5* | 67mA | 45 | 0.13 | 13.5 | | 0 | | 0.17 | | | | Sm4+tc | 2 | 1939 |
DF61 | Submin. AF pentode | 1.25* | 25mA | 67.5 | 1.7 | 67.5 | 0.45 | 0 | 1.6MΩ | 0.95 | | | | B5A | 3 | |
DF62 | Submin. AF pentode | 1.25* | 0.10 | 45 | 3.0 | 45 | 0.80 | 0 | 50.0 | 2.0 | | | | B5A | 2 | |
|
| Submin. AF pentode | 0.62* | 10mA | 15 | 50mA | 15 | 17mA | 0.75 | 1.2MΩ | 0.09 | | | | B5A | 3 | |
| Submin. AF pentode | 0.625* | 15mA | 22.5 | 50mA | 22.5 | 15mA | 1.05 | 2.0MΩ | 0.10 | | | | B5A | 1 | |
DF70 | RF pentode | 0.625* | 25mA | 30 | 0.375 | 30 | 0.125 | 0 | 500.0 | 0.22 | | | | B8D/F | 6 | |
DF72 | RF pentode | 1.25* | 25mA | 67.5 | 1.7 | 67.5 | 0.5 | 0 | 750.0 | 1.0 | | | | B8D/F | 2 | |
DF73 | VM RF pentode | 1.25* | 25mA | 67.5 | 1.7 | 67.5 | 0.5 | 0 | 800.0 | 0.8 | | | | B8D/F | 2 | |
| VM RF pentode | 1.4* | 50mA | 90 | 3.5 | 67.5 | 1.4 | 0 | 500.0 | 0.9 | | | | B7G | 2 | |
DF92 | RF pentode | 1.4* | 50mA | 90 | 3.7 | 90 | 1.4 | 0 | 500.0 | 1.0 | | | | B7G | 2 | |
| IF pentode | 1.4* | 25mA | 85 | 1.65 | 64 | 0.55 | 0 | 1MΩ | 0.85 | | | | B7G | 2 | |
| VM RF pentode | 1.4* | 25mA | 85 | 1.7 | 62 | 0.70 | 0 | 450.0 | 0.94 | | | | B7G | 59 | |
DFA 0 | Output triode | 3.5* | 0.35 | 100 | | - | - | 8.0 | 7.0 | 0.70 | | | | B4 | 1 | 1924 |
| Output triode | 5.5* | 0.25 | 100 | | - | - | 7.0 | 5.5 | 1.00 | | | | B4 | 1 | 1924 |
DFA 2 | Output triode | 3.5* | 0.25 | 100 | | - | - | 8.0 | 7.0 | 0.70 | | | | B4 | 1 | 1924 |
|
| Output triode | 5.5* | 60mA | 100 | | - | - | 6.0 | 13.0 | 0.60 | | | | B4 | 1 | 1925 |
| AF triode | 5.5* | 60mA | 100 | | - | - | 4.5 | 27.0 | 0.75 | | | | B4 | 1 | 1925 |
DFA 6 | Output triode | 4.5* | 0.85 | 400 | 26.0 | - | - | 30.0 | 4.5 | 1.45 | | 1.0 | | B4 | 1 | 1925 |
DFA 7 | Output triode | 4.5* | 0.85 | 400 | 25.0 | - | - | 150.0 | 2.85 | 0.85 | | 1.0 | | B4 | 1 | 1927 |
| AF triode | 4.5* | 0.85 | 400 | 9.0 | - | - | 7.5 | 15.0 | 1.30 | | | | B4 | 1 | 1927 |
| Output triode | 6.0* | 0.60 | 250 | 24.0 | - | - | 28.0 | 2.0 | 2.50 | | 0.84 | | B4 | 1 | 1928 |
| Heptode FC | 1.4* | 0.05 | mix 90 osc 90 | 0.55 1.2 | 45 | 0.6 | 0 | 600.0 | 0.25⅄ | | | | Ct8+tc | 31 | 1939 |
DK32 | Heptode FC | 1.4* | 50mA | mix 90 osc 90 | 0.60 1.2 | 45 | 0.7 | 0 | 600.0 | 0.25⅄ | | | | IO+tc | 76 | PW |
DK40 | Octode FC | 1.4* | 50mA | mix90 osc65.5 | 1.0 2.6 | 67.5 | 0.25 | 0 | 1MΩ | 0.425⅄ | | | | B8A | 25 | |
| Heptode FC | 1.4* | 50mA | 90 | 0.8 | 45 | 1.9 | 0/14 | 800.0 | 0.25⅄ | | | | B7G | 3 | |
| Heptode FC | 1.4* | 50mA | mix85 osc30 | 0.7 1.4 | 60 | 0.15 | 0 | 650.0 | 0.325⅄ | | | | B7G | 54 | |
| Heptode FC | 1.4** | 25mA | mix85 osc35 | 0.6 1.5 | 68 | 0.14 | 0 | 300.0 | 0.30⅄ | | | | B7G | 54 | |
|
| Output pentode | 1.4* | 50mA | 90 | 4.0 | 90 | | 3.0 | 300.0 | 1.25 | 22.0 | 0.17 | | Ct8 | 25 | 1939 |
| Output pentode | 1.4* | 0.10 | 90 | 7.5 | 90 | 1.6 | 7.5 | 115.0 | 1.55 | 8.0 | 0.24 | | Ct8 | 25 | 1939 |
DL31 | Output pentode | 1.4* | 0.05 | 90 | 4.0 | 90 | 0.70 | 3.0 | 300.0 | 1.25 | | | | IO | 78 | PW |
| Output pentode | 1.4* 2.8* | 0.10 0.05 | 90 90 | 9.5 8.0 | 90 90 | 1.3 1.0 | 4.5 4.5 | 90.0 80.0 | 2.20 2.00 | 8.0 8.0 | 0.27 0.23 | | IO | 87 | PW |
| Output pentode | 1.4* | 0.10 | 90 | 7.5 | 90 | 1.6 | 7.5 | 115.0 | 1.55 | 8.0 | 0.24 | | IO | 78 | PW |
DL51 | Output pentode (hearing aid) | 1.5* | 0.134 | 45 | 1.6 | 45 | 0.23 | 1.5 | 85.0 | 1.50 | | | | Sm4+tc | 2 | 1939 |
| Submin output pentode | 1.25* | 10mA | 15 | 0.16 | 15 | 0.04 | 1.5 | 400.0 | 0.18 | 100.0 | 9.5mW | | B5A | 3 | |
| Submin output pentode | 1.25* | 15mA | 22.5 | 0.3 | 22.5 | 0.075 | 1.4 | 300.0 | 0.34 | 75.0 | 2.7mW | | B5A | 1 | |
DL68 | Submin output pentode | 1.25* | 25mA | 22.5 | 0.6 | 22.5 | 0.15 | 2.2 | 100.0 | 0.43 | 37.0 | 5mW | | B5A | 1 | |
| Submin output pentode | 1.25* | 25mA | 90 | 1.74 | 90 | 0.04 | 3.0 | 600.0 | 0.85 | 60.0 | 0.05 | | B5A | 5 | |
DL70 | Output pentode | 1.25* | 0.11 | 135 | 7.5 | 90 | 1.5 | 7.5 | 150.0 | 1.90 | 16.0 | 0.5 | | B8D/F | 6 | |
DL71 | Output pentode | 1.25* | 25mA | 45 | 0.6 | 45 | 0.15 | 1.25 | 350.0 | 0.55 | 100.0 | 6.3mW | | B8D/F | 6 | |
|
DL72 | Output pentode | 1.25* | 25mA | 45 | 1.25 | 45 | 0.4 | 4.5 | 170.0 | 0.55 | 30.0 | 20mW | | B8D/F | 6 | |
| Output pentode | 1.25* | 0.20 | 100 | 15.0 | 100 | 3.8 | 9.0 | 16.0 | 2.50 | | | | B8D/F | 6 | |
DL75 | Output pentode | 1.25* | 25mA | 90 | 1.75 | 90 | 0.4 | 2.5 | 450.0 | 0.85 | 60.0 | 50mW | | B8D/F | 6 | |
DL91 | Output pentode | 1.4* | 0.10 | 90 | 7.4 | 67.5 | 1.4 | 7.0 | 8.0 | 5.50 | 8.0 | 0.27 | | B7G | 4 | |
| Output pentode | 1.4* | 0.10* | 90 | 7.4 | 67.5 | 1.4 | 7.0 | 100.0 | 1.57 | 8.0 | 0.235 | | B7G | 6 | |
DL93 | RF or output pentode | 1.4* | 0.2* | 150 | 13.3 | 90 | 2.2 | 8.4 | 100.0 | 1.90 | 8.0 | 0.7 | | B7G | 7 | |
| Output pentode | 1.4* | 0.10* | 90 | 9.5 | 90 | 2.1 | 4.5 | 100.0 | 2.15 | 10.0 | 0.27 | | B7G | 9 | |
| Output pentode | 1.4* | 50mA* | 85 | 5.0 | 85 | 0.9 | 5.2 | 150.0 | 1.40 | 13.0 | 0.20 | | B7G | 9 | |
DL620 | Output pentode | 1.25* | 50mA | 67.5 | 3.25 | 67.5 | 1.0 | 6.5 | 110.0 | 0.65 | 15.0 | 8.5mW | | B5A | 1 | |
DO 10 | Output triode | 6.0* | 0.80 | 400 | 26.0 | - | - | 130.0 | | 2.85 | 0.86 | 6.0 | | B4 | 1 | 1932 |
DO 20 | Output triode (Improved version) | 7.5* | 1.30 1.10 | 425 425 | 40.0 40.0 | - | - | 66.0 66.0 | 2.0 2.0 | 2.50 2.50 | 6.0 5.0 | 3.0 4.0 | | B4 | 1 | 1929 1931 |
| Output triode | 4.0* | 2.00 1.85 | 400 400 | 63.0 63.0 | - | - | 34.0 40.0 | 1.4 1.0 | 6.50 7.50 | 4.0 3.2 | 5.0 7.1 | 540 630 | B4 | 1 | 1931 PW |
|
| Output triode (improved) | 6.0* | 1.80 1.10 | 400 400 | 63.0 63.0 | - | - | 95.0 112.0 | 1.15 800Ω | 2.60 3.75 | 3.1 4.0 | 5.0 7.0 | 1780 | B4 | 1 | 1930 1931 |
DO 26 | Output triode | 4.0* | 2.00 | 400 | 63.0 | - | - | 92.0 | 950Ω | 3.80 | 3.0 | 7.5 | 1500 | B4 | 1 | 1933 |
DO 30 | Output triode (Class AB push-pull) | 4.0* | 2.00 | 500 500 | 60.0 50.0 | - | - | 134.0 145.0 | 580Ω | 6.90 | 6.0 3.4 | 11.0 45.0 | 580 - | B4 | 1 | 1937 |
| Output triode | 6.0* | 4.00 | 500 | 120.0 | - | - | 95.0 | 1.0 | 3.50 | 1.5 | 10.0 | 790 | L4 | 1 | 1930 |
DO 75 | Output triode | 10.0* | 2.00 | 1000 | 75.0 | - | - | 55.0 | 2.0 | 6.00 | 6.0 | 18.0 | 735 | Special | | 1931 |
DP425 | Output triode | 4.0* | 0.25 | 150 | | - | - | | 3.3 | 1.10 | | | | B4 | 1 | 1926 |
| Wideband output pentode | 6.3 | 0.30 | 125 | 50.0 | 125 | 5.5 | 3.0 | 20.0 | 45.0 | | | 0 | B9D | 4 | |
| Double triode | 6.3 | 0.60* | 250 | 6.0 | - | - | - | 7.0 | 27.0 | | | 920 | B9A | 1 | |
| Triode pentode | 6.3 | 0.33 | p170 t100 | 10.0 14.0 | 170 | 2.8 | - | 400.0 | 6.2 | | | 155 | B9A | 25 | |
| AF pentode | 6.3 | 0.30 | 250 | 3.0 | 100 | 0.65 | - | 1.5MΩ | 1.85 | | | 550 | B9A | 23 | |
| Output pentode Class A amp | 6.3 | 0.70 | 250 | 24.0 | 250 | 3.3 | - | | | 10.0 | 2.8 | 270 | B9A | 36 | |
| High slope pentode | 6.3 | 0.30 | 210 | 10.0 | 120 | 2.1 | - | 500.0 | 9.0 | | | 165 | B9A | 96 | |
|
E86C (SQ) | Triode | 6.3 | 0.165 | 175 | 12.0 | - | - | 1.5 | 5.0 | 14.0 | | | | B7G | 24 | |
| UHF triode | 6.3 | 0.155 | 160 | 12.5 | - | - | 1.25 | 5.2 | 13.5 | | | | B9A | 75 | |
E88CC (SQ) E88CC/01 (SQ) | Double triode | 6.3 | 0.30 | 90 | 15.0 | - | - | 1.0 | 12.5 | | | | | B9A | 39 | |
| Double triode | 6.3 | 0.40 | 100 | 8.5 | - | - | 2.1 | 4.5. | 6.0 | | | | B7G | 17 | |
| Double triode | 6.3 | 0.40 | 120 | 8.5 | - | - | 1.7 | 7.5 | 6.0 | | | 0 | B7G | 17 | |
E130L (SQ) | High slope output pentode | 6.3 | 1.70 | 250 | 100.0 | 150 | 4.0 | 15.5 | 10.0 | 27.5 | | | | IO+tc | | |
| Double triode | 6.3 | 0.40* | 150 | 8.5 | - | - | 1.85 | 7.2 | 6.4 | | | 0 | B9A | 1 | |
| High slope RF pentode | 6.3 | 0.30 | 180 | 13.0 | 150 | 3.3 | 1.25 | 90.0 | 16.5 | | | | B9A | 45 | |
| Double triode | 6.3 | 0.64* | 120 | 36.0 | - | - | 2.0 | 1.6 | 15.0 | | | 0 | B9A | 6 | |
E186F (SQ) | High slope pentode | 6.3 | 0.32 | 180 | 13.0 | 150 | 3.3 | 1.25 | 100.0 | 16.5 | | | | B9A | 45 | |
| Double triode | 6.3 | 0.335 | 90 | 15.0 | - | - | 1.2 | 2.6 | 12.5 | | | | B9A | 39 | |
| High slope pentode | 6.3 | 0.315 | 180 | 20.0 | 150 | 6.0 | 1.6 | 100.0 | 26.0 | | | | B9A | 45 | |
|
E288CC (SQ) | Double RF triode | 6.3 | 0.475 | 90 | 30.0 | - | - | 1.2 | 1.4 | 18.0 | | | | B9A | 39 | |
| Wideband RF pentode | 6.3 | 0.34 | 120 | 35.0 | 150 | 5.0 | 1.9 | 42.0 | 50.0 | | | | B9A | 90 | |
E1180 | Double power pentode Class AB1 push-pull | 6.3 | 0.55 | 250 | 26.0 | 250 | 8.0 | 9.1 | | | 11.0 | 8.5 | 180 | B9A | 68 | |
| Single diode | 6.3 | 0.15 | 50 | 5.0 | - | - | - | | - | | | | B3G | 1 | 1939 |
| UHF diode | 6.3 | 0.30 | 1kV max | - | - | - | - | - | - | | | | Wires | - | |
EA53 | UHF diode | 6.3 | 0.30 | 1kV max | - | - | - | - | - | - | | | | Coaxial | - | |
| Sub-min diode | 6.3 | 0.15 | 150 | 9.0 | - | - | - | - | - | | | | B5B/F | 1 | |
| Triple diode | 6.3 | 0.20 | 140 | 0.8 | - | - | - | - | - | | | | Ct8 | 17 | 1938 |
| Triple diode triode | 6.3 | 0.45 | 250 | 1.0 | - | - | 3.0 | 50.0 | 1.40 | | | | B9A | 2 | |
| Single diode triode | 6.3 | 0.30 | 200 | 7.5 | - | - | 3.2 | 12.0 | 2.80 | | | | B7G | 23 | |
EAF41 | Diode & VM RF pentode | 6.3 | 0.20 | 250 | 5.0 | 110 | 1.0 | 2.0 | 1.4MΩ | 2.0 | | | | B8A | 11 | |
| Diode & VM RF pentode | 6.3 | 0.20 | 250 | 5.0 | 110 | 1.0 | 2.0 | 1.4MΩ | 2.0 | | | | B8A | 12 | |
|
| Double diode | 6.3 | 0.20 | 140 | 0.8 | - | - | - | - | - | | | | Ct8 | 10 | 1938 |
| Double diode | 6.3 | 0.20 | 140 | 0.8 | - | - | - | - | - | | | | IO | 53 | 1941 |
| Double diode | 6.3 | 0.30 | 150 | 9.0 | - | - | - | - | - | | | | B8A | 10 | |
| Double diode | 6.3 | 0.30 | 150 | 9.0 | - | - | - | - | - | | | | B7G | 18 | 1946 |
| Double diode triode | 6.3 | 0.20 | 250 | 5.0 | - | - | 5.5 | 15.0 | 2.00 | | | | Ct8+tc | 7 | 1938 |
| Double diode triode | 6.3 | 0.20 | 250 | 5.0 | - | - | 5.5 | 15.0 | 2.00 | | | | IO+tc | 29 | 1940 |
| Double diode triode | 6.3 | 0.23 | 250 | 1.0 | - | - | 3.0 | 54.0 | 1.30 | | | | B8A | 9 | |
| Double diode triode | 6.3 | 0.23 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | B9A | 54 | |
| Double diode triode | 6.3 | 0.30 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | B7G | 19 | |
| Double diode triode | 6.3 | 0.30 | 250 | 1.2 | - | - | 2.0 | 62.5 | 1.60 | | | | B7G | 19 | |
| Double diode RF pentode | 6.3 | 0.20 | 250 | 5.0 | 100 | 1.6 | 2.0 | 1.5M | 1.80 | | | | Ct8+tc | 13 | 1938 |
EBF32 | Double diode pentode | 6.3 | 0.20 | 250 | 5.0 | 100 | 1.6 | 2.0 | 1.3M | 1.80 | | | | IO+tc | 15 | PW |
|
| Double diode pentode | 6.3 | 0.30 | 250 | 5.0 | 85 | 1.75 | 2/41.5 | 1.4MΩ | 2.20 | | | 300 | B9A | 12 | |
| Double diode VM RF pentode | 6.3 | 0.30 | 12.6 | 0.45 | 12.6 | 0.14 | ‡ | 1MΩ | 1.0 | | | | B9A | 12 | |
| Double diode VM RF pentode for AM RX | 6.3 | 0.30 | 250 | 9.0 | 100 | 2.7 | 2.0 | 1MΩ | 3.80 | | | | B9A | 12 | |
| Double diode output pentode | 6.3 | 1.20 | 250 | 36.0 | 250 | 5.0 | 6.0 | 55.0 | 9.50 | 7.0 | 4.3 | 146 | Ct8+tc | 13 | 1938 |
| Double diode output pentode | 6.3 | 0.80 | 250 | 44.0 | 275 | 5.8 | 6.2 | 50.0 | 9.50 | 5.7 | 4.5 | 125 | B8G | 6 | |
| Double diode output pentode | 6.3 | 1.20 | 250 | 36.0 | 250 | 5.0 | 6.0 | 55.0 | 9.50 | 7.0 | 4.3 | 146 | IO+tc | 15 | 1940 |
| Output triode | 6.3 | 0.65 | 250 | 20.0 | - | - | 16.0 | 3.0 | 3.20 | 10.0 | 0.5 | | IO | 20 | PW |
EC52 (was RL16) | UHF oscillator triode | 6.3 | 0.43 | 250 | 10.0 | - | - | | 9.2 | 6.50 | | | | B9G | 3 | 1946 |
| UHF oscillator triode | 6.3 | 0.25 | 200 | 7.5 | - | - | 3.3 | 11.4 | 2.90 | | | | B3G+2tp | 2 | 1946 |
EC54 (was RL37) | Grounded grid triode | 6.3 | 0.43 | 250 | 10.0 | - | - | 1.5 | 15.1 | 9.00 | | | | B9G | 17 | 1946 |
EC71 | Triode | 6.3 | 0.15 | 100 | 8.5 | - | - | 1.25 | 4.7 | 5.80 | | | | B8D/F | 16 | |
| UHF triode | 6.3 | 0.15 | 100 | 8.5 | - | - | 1.25 | 4.7 | 5.8 | | | | B9A | 74 | |
|
| UHF triode | 6.3 | 0.155 | 160 | 12.5 | - | - | 1.25 | 4.8 | 13.5 | | | | B9A | 75 | |
| ‡ Obtained with grid biasing resistor of 2.2MΩ. | | | | | | | | | | | | | | | |
EC90 | RF power triode | 6.3 | 0.15 | 250 | 10.5 | | | 8.5 | 7.70 | 2.20 | | 5.5 | | B7G | 15 | |
| Grounded grid triode | 6.3 | 0.30 | 250 | 10.0 | | | 1.5 | 12.0 | 8.50 | | | | B7G | 24 | |
| Grounded grid triode | 6.3 | 0.15 | 250 | 10.0 | | | 2.0 | 11.0 | 5.50 | | | | B7G | 66 | |
EC97 | RF triode | 6.3 | 0.215 | 135 | 11.0 | | | 1.0 | 5.0 | 13.0 | | | | B7G | 79 | |
EC98 | UHF triode | 6.3 | 0.40 | 150 | 13.5 | | | 13.5 | 3.70 | 13.5 | | | | B7G | 30 | |
EC1000 (SQ) | VHF triode | 6.3 | 0.185 | 80 | 14.0 | | | 1.9 | | 14.5 | | | | B8D/F +tc | 13 | |
| Medium-μ double triode (common cathode) | 6.3 | 0.95 | 250 | 6.0 | | | 4.6 | 14.0 | 2.30 | | | | IO | 22 | WW2 |
| Medium-μ double triode | 6.3 | 0.95 | 250 | 6.0 | | | 4.6 | 14.0 | 2.30 | | | | IO | 26 | WW2 |
| Medium-μ double triode | 6.3 | 0.40 | 250 | 9.0 | | | 4.0 | 9.7 | 3.60 | | | | IO | 26 | PW |
| Low-μ double triode | 6.3 | 0.95 | 250 | 10.0 | | | 16.0 | 5.2 | 2.20 | | | | IO | 26 | 1946 |
|
| High-μ double triode | 6.3 | 0.40 | 250 | 2.3 | | | 2.5 | 34.0 | 2.00 | | | | IO | 26 | PW |
| Double triode | 6.3 | 0.60 | 250 | 6.0 | | | 5.2 | 11.0 | 2.70 | | | | B8A | 13 | |
| Double triode | 6.3 | 0.30 | 100 | 6.5 | | | 1.0 | 6.5 | 5.4 | | | | B8DF | 15 | |
| Double triode | 6.3 | 0.30* | 250 | 10.0 | | | 2.0 | 25.0 | 5.50 | | | | B9A | 1 | |
| Double triode | 6.3 | 0.30* | 250 | 10.5 | | | 8.5 | 7.7 | 2.20 | | | | B9A | 1 | |
| Double triode | 6.3 | 0.30* | 250 | 1.2 | | | 2.0 | 62.5 | 1.60 | | | | B9A | 1 | |
| Double triode | 6.3 | 0.34 | 90 | 12.0 | | | 1.5 | 4.0 | 6.0 | | | | B9A | 28 | |
| RF double triode | 6.3 | 0.435 | 250 | 10.0 | | | 2.7 | 9.0 | 6.1 | | | | B9A | 39 | |
| RF double triode | 6.3 | 0.33 | 6.3 | 0.9 | | | 0.4 | 5.4 | 2.6 | | | | B9A | 39 | |
| VHF frame grid double triode for cascode amp | 6.3 | 0.365 | 90 | 15.0 | | | 1.3 | 2.6 | 12.5 | | | | B9A | 39 | |
| VHF double triode | 6.3 | 0.45 | 100 | 8.5 | | | 0.85 | 7.1 | 5.30 | | | | B7G | 17 | |
| VHF double triode | 6.3 | 0.365 | 90 | 15.0 | | | 1.4 | 2.5 | 12.5 | | | | B9A | 39 | |
|
ECC804/6 - 30L2 | Double triode | 6.3 | 0.30 | 200 | 10.0 | | | 7.7 | 5.3 | 3.4 | | | | B9A | 39 | |
ECC2000 (SQ) | UHF double triode Cascode amplifier | 6.3 | 0.335 | i/p90 o/p90 | 15.0 15.0 | - | - | 2.0 1.8 | | 12.0 16.0 | | | | B10B | 2 | |
| VHF triode pentode frequency changer | 6.3 | 0.43 | p250 t100 | 7.0 14.0 | 200 | 1.8 | 3.2 2.0 | 900.0 4.0 | 5.50 5.00 | | | | B9A | 25 | |
| Triode pentode frequency changer | 6.3 | 0.45 | p250 t150 | 5.2 18.0 | 117 | 1.9 | 0 1.0 | 5.0 | 1.9⅄ | | | | B9A | 25 | |
ECF86 | Triode pentode frequency changer | 6.3 | 0.39 | p170 t100 | 10.0 14.0 | 50 | 3.3 | 1.2 3.0 | >350.0 | 12.0 5.7 | | | | B9A | 65 | |
ECH2 | Triode heptode frequency changer | 6.3 | 0.95 | h250 t100 | 3.25 9.5 | 100 | 6.0 | 2.5/30 | 1.5MΩ | 0.75⅄ | | | | Ct8+tc | 1 | 1938 |
| Triode hexode frequency changer | 6.3 | 0.20 | h250 t100 | 3.0 3.3 | 100 | 3.0 | 2.0/17 | 1.3MΩ | 0.65⅄ 2.8 | | | | Ct8+tc | 1 | 1939 |
| Triode heptode frequency changer | 6.3 | 0.33 | mix250 osc250 | 3.0 4.5 | 150 | 6.2 | 2.0 | 1.4MΩ 20.0 | 0.75⅄ 0.55 | | | 150 | B8G | 42 | |
ECH33 | Triode hexode frequency changer | 6.3 | 0.20 | h250 t100 | 3.0 3.3 | 100 | 3.0 | 2.0/17 | 1.3M | 0.65⅄ 2.80 | | | | IO+tc | 3 | 1940 |
| Triode hexode frequency changer | 6.3 | 0.30 | h250 t100 | 3.0 3.3 | 100 | 3.0 | 2.0/17 | 1.3MΩ 8.6 | 0.65⅄ 2.80 | | | 215 | IO+tc | 3 | 1940 |
ECH41 | Triode hexode frequency changer | 6.3 | 0.225 | mix250 osc250 | 3.0 4.9 | 104 | 2.2 | 2/28 | 2MΩ | 0.50⅄ 0.55 | 33.0 | | 200 | B8A | 3 | |
| Triode hexode frequency changer | 6.3 | 0.23 | mix250 osc250 | 3.0 4.8 | 180 4.5 | 3.0 | 2/29 | >1MΩ | 0.75⅄ 0.55 | 33.0 | | | B8A | 3 | |
|
| Triode heptode frequency changer | 6.3 | 0.30 | mix250 osc250 | 2.5 | 92 | 5.5 | 2/28.5 | 1MΩ | 0.70⅄ 0.65 | 33.0 | | | B9A | 24 | |
| Triode heptode frequency changer | 6.3 | 0.30 | mix25 osc2.6 | 0.46 0.75 | 25 | 1.25 | 0 0 | 1.1MΩ 47.0 | 0.39⅄ 1.40 | | | | B9A | 24 | |
| Triode heptode FC Sync. Pulse generator | 6.3 | 0.30 | hep250 t135 | 1.7 3.0 | 14 | 0.9 | 0 | | 2.20 3.70 | | | | B9A | 77 | |
| Triode & frame output pentode for TV | 6.3 | 0.30 | p200 t100 | 17.5 4.0 | 200 | 3.3 | 8.0 | 150.0 12.5 | 3.30 1.40 | | | | B9A | 13 | |
| Triode & output pentode | 6.3 | 0.78 | p250 t100 | 28.0 3.5 | 250 | 5.7 | 22.5 0 | 25.0 28.0 | 5.00 2.50 | 9.0 | 3.4 | 680 | B9A | 37 | |
| Triode & output pentode | 6.3 | 0.60 | p200 t200 | 27.0 2.4 | 200 | 4.4 | 13.0 1.5 | 53.0 34.0 | 5.0 2.5 | 7.5 | 2.5 | | B9A | 27 | |
| AF triode & output pentode | 6.3 | 0.66 | p250 t250 | 37.0 1.2 | 250 10.0 | - 1.9 | - 62.0 | - 1.20 | 7.0 | 4.0 | 170 | B9A | 76 | | |
ECL820 | Line t/b output pentode | 6.3 | 1.05 | 250 | | 250 | | | | | | | | B9A | 17 | |
| Secondary emission RF pentode | 6.3 | 0.30 | 250 Vk2 150 | 10.0 | 250 | 0.6 | 3.0 | 2.5M | 14.0 | | | | B9G | 16 | 1938 |
| Frame-grid VM RF pentode | 6.3 | 0.30 | 230 | 10.5 | 90 | 3.6 | 2.1 | 650.0 | 10.6 | | | | B9A | 10 | |
| Frame-grid RF pentode | 6.3 | 0.30 | 200 | 10.0 | 200 | 4.1 | 2.5 | 380.0 | 15.0 | | | | B9A | 10 | |
EF2 | VM RF pentode | 6.3 | 0.40 | 250 | 4.5 | 100 | 1.4 | 2/22 | 1.4M | 2.20 | | | | Ct8+tc | 15 | 1939 |
|
| VM RF pentode | 6.3 | 0.20 | 250 | 8.0 | 100 | 2.6 | 3/35 | 1.2M | 1.70 | | | | Ct8+tc | 15 | 1938 |
| RF or AF pentode | 6.3 | 0.20 | 250 | 3.0 | 100 | 1.1 | 2.0 | 2.5M | 2.00 | | | | Ct8+tc | 15 | 1938 |
| Low-noise VM RF pentode (with 4th grid) | 6.3 | 0.20 | 250 | 8.0 | 250 | 0.2 | 2.5/50 | 450.0 | 1.80 | | | | Ct8+tc | 11 | 1938 |
| VM RF pentode | 6.3 | 0.20 | 250 | 6.0 | 100 | 1.7 | 2.5/40 | 1.25M | 2.20 | | | | Ct8+tc | 15 | 1938 |
| VM RF pentode | 6.3 | 0.20 | 250 | 6.0 | 100 | 1.7 | 2.5/46 | 1.2MΩ | 2.0 | | | 325 | B8G | 3 | |
| RF or AF pentode | 6.3 | 0.20 | 250 | 3.0 | 100 | 0.8 | 2.0 | 2.5M | 1.80 | | | | IO+tc | 8 | 1940 |
| Low-microphony AF pentode | 6.3 | 0.20 | 250 | 3.0 | 100 | 0.8 | 2.0 | 2.5M | 1.80 | | | | IO+tc | 8 | 1946 |
| Low microphony, low noise AF pentode | 6.3 | 0.20 | 250 | 3.0 | 100 | 0.80 | 2.0 | 2.5MΩ | 1.80 | | | | IO+tc | 8 | |
EF38 | Low-noise VM RF pentode (with 4th grid) | 6.3 | 0.20 | 250 | 8.0 | 250 | 0.2 | 2.5/50 | 450.0 | 1.80 | | | | IO+tc | 66 | 1940 |
| VM RF pentode | 6.3 | 0.20 | 250 | 6.0 | 100 | 1.7 | 2.5/40 | 1.25M | 2.20 | | | 325 | IO+tc | 8 | 1940 |
| Voltage amplifier pentode | 6.3 | 0.20 | 250 | 3.0 | 140 | 0.55 | 2.0 | 2.5MΩ | 1.85 | | | | B8A | 15 | |
| VM RF pentode | 6.3 | 0.20 | 250 | 6.0 | 100 | 1.7 | 2.5/39 | 1MΩ | 2.20 | | | 325 | B8A | 7 | |
|
| High slope RF pentode | 6.3 | 0.33 | 250 | 10.0 | 250 | 2.3 | 2.0 | 440.0 | 9.5 | | | | B8A | 8 | 1947 |
| VHF pentode | 6.3 | 0.30 | 250 | 10.0 | 250 | 3.0 | 2.0 | 1M | 6.50 | | | | B9G | 1 | 1939 |
| VHF pentode | 6.3 | 0.30 | 250 | 10.0 | 250 | 1.45 | 1.7 | 500.0 | 7.70 | | | 150 | B9G | 2 | PW |
| Video frequency pentode | 6.3 | 1.00 | 250 250 | 40.0 10.0 | 250 150 | 5.5 1.0 | 4.5 4.0 | 55.0 100.0 | 12.00 7.00 | | | 100 360 | B9G | 1 | 1946 |
EF70 | RF pentode | 6.3 | 0.20 | 100 | 3.0 | 100 | 2.25 | 2.0 | 100.0 | 2.5 | | | | B8D/F | 3 | |
EF71 | VM RF pentode | 6.3 | 0.15 | 100 | 7.2 | 100 | 2.2 | 1.2 | 260.0 | 4.5 | | | | B8D/F | 4 | |
| RF pentode | 6.3 | 0.15 | 100 | 7.0 | 100 | 2.2 | 1.4 | 250.0 | 5.0 | | | | B8D/F | 4 | |
| RF pentode | 6.3 | 0.20 | 100 | 7.5 | 100 | 2.5 | 2.0 | 250.0 | 5.25 | | | | B8D/F | 5 | |
EF74 | RF pentode | 6.3 | 0.20 | 100 | 7.0 | 100 | 2.4 | 1.4 | 200.0 | 3.1 | | | | B8D/F | 5 | |
| High slope RF pentode | 6.3 | 0.30 | 170 | 10.0 | 170 | 2.50 | 2.0 | 400.0 | 7.40 | | | | B9A | 10 | |
| VM AF pentode | 6.3 | 0.20 | 250 | 4.0 | 50 | 1.15 | 1.6 | 1.25 MΩ | 1.6 | | | | B9A | 23 | |
| VM RF pentode for TV | 6.3 | 0.30 | 250 | 10.0 | 100 | 2.5 | 2/35 | 500.0 | 6.00 | | | | B9A | 10 | |
|
| Low noise AF pentode | 6.3 | 0.20 | 250 | 3.0 | 140 | 0.6 | 2.0 | 2.5MΩ | 1.80 | | | | B9A | 23 | |
| VM RF pentode | 6.3 | 0.20 | 250 | 9.0 | 100 | 3.0 | 2.0 | 1MΩ | 3.60 | | | | B9A | 36 | |
| High slope RF pentode | 6.3 | 0.30 | 250 | 10.0 | 250 | 2.6 | 2.0 | 500.0 | 7.60 | | | | B7G | 21 | 1947 |
| VM RF pentode | 6.3 | 0.20 | 250 | 8.0 | 200 | 2.1 | 2.5/21 | 500.0 | 2.5 | | | | B7G | 21 | |
| VM RF pentode | 6.3 | 0.30 | 250 | 11.0 | 100 | 4.2 | 1/20 | 1.5MΩ | 4.4 | | | | B7G | 16 | |
| VHF pentode | 6.3 | 0.175 | 180 | 7.7 | 120 | 2.4 | 2.0 | 400.0 | 5.10 | | | | B7G | 14 | |
| RF pentode | 6.3 | 0.30 | 12.6 | 3.0 | 6.3 | 1.1 | - | 150.0 | 1.90 | | | | B7G | 68 | |
| RF pentode | 6.3 | 0.30 | 12.6 | 2.0 | 6.3 | 0.7 | † | 20.0 | 2.0 | | | | B7G | 68 | |
| † Obtained with grid biasing resistor of 10MΩ. | | | | | | | | | | | | | | | |
EF730 | RF pentode | 6.3 | 0.15 | 100 | 5.3 | 100 | 4.1 | 1.0 | 110.0 | 3.2 | | | | B8D/F | 8 | |
| VM RF pentode | 6.3 | 0.15 | 100 | 7.2 | 100 | 2.0 | 1.0 | 260.0 | 4.5 | | | | B8D/F | 14 | |
| RF pentode | 6.3 | 0.15 | 100 | 7.5 | 100 | 2.4 | 1.0 | 260.0 | 5.0 | | | | B8D/F | 14 | |
|
EF734 | RF pentode | 6.3 | 0.15 | 100 | 7.5 | 100 | 2.4 | 1.5 | Ω175 | 5.0 | | | 0 | B8D/F | 17 | |
EF812/6F23 | RF pentode | 6.3 | 0.30 | 170 | 10.0 | 170 | 2.6 | 1.9 | | 9.2 | | | | B9A | 10 | |
EFL200 | Double pentode for video o/p & sync separator | 6.3 | 0.85 | | | | | | | | | | | B10B | 1 | |
| AF amplifier & tuning indicator | 6.3 | 0.20 | 146 185 | 0.8 0.5 | 40 180 | 0.6 0.2 | 2.0 20.0 | | | | | | Ct8 | 18 | 1938 |
EH2 | Hexode - IF amplifier Freq. changer | 6.3 | 0.20 | 250 250 | 4.2 1.85 | 100 100 | 2.8 3.8 | 3/25 3/25 | 1M 2M | 1.40 0.40⅄ | | | 530 430 | Ct8+tc | 16 | 1938 |
| Dual control heptode | 6.3 | 0.30 | 100 | 0.75 | 30 | 1.11 | 1.0 | 900.0 | 1.2 | | | | B7G | 29 | |
| Octode FC | 6.3 | 0.20 | mix250 osc200 | 1.0 2.5 | 50 | 1.1 | 2/25 | 2.0 | 0.55⅄ | | | 490 | Ct8+tc | 2 | 1938 |
| Octode FC | 6.3 | 0.60 | mix250 osc100 | 2.5 5.5 | 100 | 6.0 | 2.5/38 | 2M | 0.65⅄ | | | 190 | Ct8+tc | 2 | 1938 |
| Octode FC | 6.3 | 0.20 | mix250 osc200 | 1.0 2.5 | 50 | 0.8 | 2.0/25 | 2.0 | 0.55⅄ | | | 490 | IO+tc | 1 | 1940 |
| Heptode FC | 6.3 | 0.30 | mix250 osc190 | 3.0 | 100 | 7.1 | 1.5/30 | 1 MΩ | 0.475⅄ | | | | B7G | 29 | |
| Output pentode | 6.3 | 0.20 | 250 | 32.0 | 250 | 5.0 | 18.0 | 70.0 | 2.80 | 8.0 | 3.60 | | Ct8+tc | 33 | 1938 |
| Output pentode (triode connection) | 6.3 | 0.90 | 250 250 | 36.0 20.0 | 250 | 4.0 | 6.0 8.5 | 50.0 3.0 | 9.00 6.50 | 7.0 7.0 | 4.5 1.1 | | Ct8 | 12 | 1938 |
|
EL5 | Output pentode | 6.3 | 1.35 | 250 | 72.0 | 275 | 7.0 | 14.0 | 22.0 | 8.50 | 3.5 | 8.8 | | Ct8 | 12 | 1938 |
EL6 | Output pentode (Class AB1 Push-pull) | 6.3 | 1.20 | 250 250 | 72.0 53.0 | 250 250 | 8.0 8.6 | 7.0 | 20.0 | 14.50 | 3.5 5.0 | 8.0 14.5 | 90 | Ct8 | 12 | 1938 |
EL22 | Output pentode | 6.3 | 0.70 | 250 | 44.0 | 250 | 5.2 | 7.0 | 45.0 | 9.5 | 5.75 | 5.2 | 140 | B8G | 10 | |
| Output pentode (Class AB1 push-pull) | 6.3 | 1.40 | 275 800 | 91.0 30.0 | 275 400 | 11.0 3.1 | 9.0 26.0 | 20.0 | 14.00 | 10.0 | 102 | - | IO+tc | 40 | PW |
| Output pentode (Class A push-pull) | 6.3 | 0.20 | 250 250 | 32.0 32.0 | 250 250 | 5.0 8.0 | 18.0 | 70.0 | 2.80 | 8.0 8.0 | 3.6 7.0 | 310 | IO+tc | 9 | 1940 |
| Output pentode (triode connection) (Class A push-pull) | 6.3 | 0.90 | 250 250 250 | 36.0 20.0 28.5 | 250 - 250 | 4.0 - 4.6 | 6.0 8.5 | 50.0 3.0 | 9.00 6.50 | 7.0 7.0 10.0 | 4.0 1.1 8.2 | 140 | IO | 36 | 1940 |
| Output pentode Push-pull fixed bias) | 6.3 | 1.5 | 250 Vb500 | 100.0 2x125 | 250 Vb400 | 14.9 2x4 | 13.5 36.0 | 15.0 | 11.0 | 4.0 | 70 | 0 | IO | 133 | |
| Output pentode (Class AB1 push-pull) | 6.3 | 1.35 | 250 360 | 72.0 53.0 | 250 270 | 8.0 17.5 | 15.5 | 15.5 | 5.00 | 2.5 7.0 | 6.0 21.0 | 250 | IO | 36 | WW2 |
| Output pentode (Class A push-pull) | 6.3 | 1.20 | 250 250 | 72.0 45.0 | 250 250 | 8.0 5.1 | 7.0 | 20.0 | 14.50 | 3.5 5.5 | 8.0 14.5 | 90 90 | IO | 36 | 1940 |
| † This EL36 should not be confused with the later 1950s version (shown below) intended for TV line timebases. | | | | | | | | | | | | | | | |
| Line t/b output pentode | 6.3 | 1.25 | 100 | | 100 | | | | | | | | IO | 129 | |
| Output pentode (Class AB1 push-pull) | 6.3 | 1.40 | 250 325 | 100.0 77.0 | 250 325 | 13.5 9.75 | 13.5 | 13.5 | 11.00 | 2.5 4.0 | 10.5 35.0 | 120 130 | IO | 36 | 1946 |
|
| Line t/b output pentode | 6.3 | 1.40 | 275 | 91.0 | 275 | 11.0 | 9.0 | 20.0 | 14.00 | | | | IO+tc | 40 | 1946 |
| Output pentode | 6.3 | 0.70 | 250 | 36 | 250 | 5.2 | 7.0 | 40.0 | 10.0 | 7.0 | 4.2 | 170 | B8A | 23 | |
| Output pentode | 6.3 | 0.20 | 225 | 26 | 225 | 4.1 | 10.8 | 90.0 | 3.2 | 9.0 | 2.5 | 360 | B9A | 23 | |
| Output pentode | 6.3 | 1.35 | 250 | 72.0 | 275 | 8.0 | 14.0 | 22.0 | 8.50 | 3.5 | 8.8 | | Ct8+tc | 21 | 1939 |
EL51 | Output pentode (Class AB1 push-pull) | 6.3 | 1.90 | 750 550 | 40.0 147.0 | 750 750 | 33.0 | 44.0 7.7 | 55.0 | 7.00 7.00 | | 6.00 | | Ct8+tc | 21 | 1939 |
EL71 | Output pentode | 6.3 | 0.45 | 110 | 30.0 | 110 | 2.0 | 8.3 | 15.0 | 4.2 | 3.0 | 1.0 | 270 | B8D/F | 14 | |
| Output pentode & Line t/b output pentode | 6.3 | 1.05 | 250 [250 | 32 | 250 250 | 2.4 | 38.5 | 15.0 | 4.6 | | | | B9A+tc | 17 | |
| Video output pentode | 6.3 | 0.71 | 250 | 36.0 | 250 | 5.0 | 5.5 | 130.0 | 10.0 | | | | B9A | 14 | |
| Output pentode (Class AB1 push-pull) | 6.3 | 0.76 | 250 300 | 48.0 2x46 | 250 300 | 5.5 2x4.0 | 7.1 | 38.0 | 11.3 | 4.5 8.0 | 5.7 20 | 135 130 | B9A | 16 | |
| Output pentode | 6.3 | 0.20 | 225 | 26 | 225 | 4.1 | 10.8 | 90.0 | 3.2 | 9.0 | 2.6 | 360 | B9A | 26 | |
| Output pentode (single-ended push-pull) | 6.3 | 0.76 | 170 Vb300 | 70 Ib69 | 170 | 5.0 | 12.5 | 23.0 | 10.0 | 1.0 | 4.8 | 2x120 | B9A | 16 | |
| Output pentode | 6.3 | 0.45 | 250 | 45 | 250 | 4.5 | 12.5 | 52.0 | 4.1 | | | | B7G | 27 | |
|
| Output pentode | 6.3 | 0.20 | 250 | 16 | 250 | 2.4 | | 130.0 | 2.6 | 16.0 | 1.4 | 680 | B7G | 25 | |
| Output pentode | 6.3 | 0.20 | 250 | 24 | 250 | 4.5 | 9.0 | 80.0 | 5.0 | | | | B7G | 67 | |
| Line t/b output pentode | 6.3 | 1.27 | 250 | 48 | 100 | 5.5 | 46.0 | 13.5 | 6.90 | | | | IO+tc | 129 | |
EL506 | Output pentode | 6.3 | 0.80 | | | | | | | | | | | B9D | 2 | |
EL820 | Output pentode | 6.3 | 1.05 | 250 | 32 | 250 | 2.4 | 38.5 | 15.0 | 4.6 | | | | B9A | 17 | |
| Video output pentode | 6.3 | 0.75 | 250 | 40.0 | 250 | 6.0 | 4.5 | 50.0 | 11.0 | | | | B9A | 19 | |
| Video output pentode | 6.3 | 0.75 | 250 | 40.0 | 150 | 5.0 | 2.5 | 100.0 | 13.0 | | | | B9A | 19 | |
| Double output pentode | 6.3 | 0.55 | 250 | 24.0 | 250 | 4.5 | 4.6 | 80.0 | 6.0 | 10.0 | 3.0 | 160 | B9A | 68 | |
| Octode FC | 13.0 | 0.20 | mix250 osc90 | 1.6 2.0 | 70 | 3.8 | 1.5 | 2M 22.7 | 0.6⅄ | | | 250 | Ct8+tcc | 2 | 1934 |
| Octode FC | 13.0 | 0.20 | mix200 osc90 | 1.6 2.0 | 70 | 3.8 | 1.5 | 2M 22.7 | 0.6⅄ | | | 250 | B7+tc | 2 | 1935 |
FC2 | Octode FC | 2.0* | 0.10 | mix135 osc135 | 0.95 | 70 | 3.75 | 0 | | 0.20⅄ | | | | B7+tc | 1 | 1935 |
| Octode FC | 2.0* | 0.13 | mix135 osc135 | 0.7 2.1 | 45 | 0.7 | 0.5/12 | 2.5M | 0.27⅄ | | | | B7+tc | 1 | 1937 |
|
| Octode FC | 4.0 | 0.65 | mix250 osc90 | 1.6 2.06 | 70 | 3.8 | 1.5 | 1.6M 4.8 | 0.6⅄ | | | 250 | B7+tc | 2 | 1934 |
H20 | High-μ triode | 20.0 | 0.18 | 200 | 0.2 | - | - | 1.6 | 100.0 | 1.00 | | | | B5 | 1 | 1932 |
| Double diode triode | 12.6 | 0.15 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | B7G | 19 | |
HBC91 | Double diode triode | 12.6 | 0.15 | 250 | 1.2 | - | - | 2.0 | 65.5 | 1.60 | | | | B7G | 19 | |
| VM RF pentode | 12.6 | 0.15 | 250 | 11.0 | 100 | 4.2 | 1.0 | 1.5MΩ | 4.40 | | | | B7G | 16 | |
HK90 | Heptode FC | 12.6 | 0.15 | 250 | 3.0 | 100 | 7.9 | 1.5 | 1MΩ | 0.475⅄ | | | | B7G | 29 | |
| General-purpose triode | 13.0 | 0.20 | 200 | 5.0 | - | - | 3.7 | 12.0 | 3.30 | | | | Ct8+tc | 3 | 1934 |
| General-purpose triode | 13.0 | 0.20 | 200 | 5.0 | - | - | 3.7 | 12.0 | 3.30 | | | | B7+tc | 23 | 1935 |
| Detector triode | 20.0 | 0.18 | 200 | 3.5 | - | - | 3.5 | 14.0 | 2.50 | | | | B5 | 1 | 1932 |
| Output pentode | 50.0 | 0.15 | 110 | 49 | 110 | 4.0 | 7.5 | 10.0 | 7.50 | 2.5 | 1.9 | | B7G | 42 | |
| Double diode triode | 2.0* | 50mA | 100 | 2.4 | - | - | 0 | 21.0 | 1.20 | | | | IO+tc | 88 | 1946 |
KCF30 | Triode pentode FC | 2.0* | 0.20 | p120 t100 | 0.58 | 60 | 0.92 | 1.5 0 | | 2.60⅄ 1.70 | | | | IO+tc | 98 | 1946 |
|
| VM RF pentode | 2.0* | 50mA | 120 | 1.45 | 60 | 0.5 | 1.5 | 1.5M | 1.08 | | | | IO+tc | 85 | 1946 |
| Octode FC | 2.0* | 0.13 | mix135 osc135 | 0.7 2.1 | 45 | 0.7 | 0 | 2.5M | 0.27⅄ | | | | IO+tc | 76 | 1946 |
| Output pentode | 2.0* | 0.15 | 135 | 5.6 | 135 | | 4.5 | 150.0 | 2.20 | 19.0 | 0.34 | | IO+tc | 85 | 1946 |
| Double output pentode | 2.0* | 0.30 | 135 | 16.9 | 135 | 5.7 | 11.3 | | 2.60 | 16.0 | 1.2 | | IO | 97 | 1946 |
| | | | | | | | | | | | | | - | - | |
M8080 (SQ) | See EC90 | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
M8096 (SQ | See QV03-12 (TX valve) | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
M8099 (SQ) | | | | | | | | | | | | | | - | - | |
|
| | | | | | | | | | | | | | - | - | |
M8101 (SQ) | | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
| See QV04-7 (TX valve) | | | | | | | | | | | | | - | - | |
M8161 (SQ) | | | | | | | | | | | | | | - | - | |
| | | | | | | | | | | | | | - | - | |
M8196 (SQ) | Pentode | 6.3 | 0.175 | 120 | 5.1 | 120 | 3.5 | 2.0 | 150.0 | 3.2 | | | | B7G | 32 | |
| Double diode = 6AL5 | 6.3 | 0.30 | 117 | 9.0 | | | | | | | | | B7G | 18 | |
| UHF triode | 6.3 | 0.40 | 150 | 13.5 | - | - | 1.35 | 3.7 | 13.5 | | | | B7G | 84 | |
M8718 SQ) | See EC71 | | | | | | | | | | | | | - | - | |
| Electrometer pentode | 4.5 | 0.16 | 160 | 80μA | 45 | 20 μA | 2.0 | Ω5MΩ | 0.24 | | | | IO+tc | 8 | |
|
| Electrometer triode | 1.25* | 13mA | 9 | 100μA | - | - | 2.5 | | 0.08 | | | | B5J/F | 1 | |
| Electrometer tetrode | 1.25* | 13mA | 4.5 | 20 μA | -3.2 | | +3.0 | | | | | | B5J/F | 2 | |
| Electrometer pentode | 1.25* | 8.2mA | 10 | 5 μA | 6.5 | | 2.5 | 10.5 MΩ | 0.01 | | | | B5J/F | 3 | |
ME1404 = CV8144 | Electrometer triode | 1.25* | 14mA | 9 | 100 μA | - | - | 2.7 | | 0.08 | | | | B5J/F | 1 | |
ME1406 | Electrometer pentode | 1.25* | 8.2mA | 10 | 5 μA | 6.5 | | 2.5 | 10.5 MΩ | 0.01 | | | | B5J/F | 3 | |
MM4V | VM RF pentode | 4.0 | 1.00 | 200 | 6.0 | 110 | 0.8 | 1.5 | 350.0 | 2.50 | | | | B5+tc | 2 | 1931 |
MM20 | VM RF pentode (DC) | 20.0 | 0.18 | 200 | 6.0 | 110 | | 0 | | 3.50 | | | | B5+tc | 2 | 1932 |
MZ05-60 | Output triode (PA) | 6.0* | 1.65 | 500 | 120.0 | - | - | 95.0 | | 3.25 | 1.5 | 10.0 | 925 | L4 | 1 | 1935 |
MZ1-75 | Output triode (PA) | 10.0* | 1.10 | 1000 | 75.0 | - | - | 80.0 | 2.5 | 4.00 | 8.0 | 20.0 | | BC4 | 1 | 1935 |
MZ1-100 | Output triode (PA) | 6.0* | 2.7 | 1000 | 100.0 | - | - | 145.0 | 1.4 | 4.00 | 7.0 | 30.0 | | L4 | 1 | 1938 |
| Output triode (PA) | 14.0* | 2.20 | 2000 | 125.0 | - | - | | 3.0 | 5.40 | | 0 | | USL4b | | 1938 |
| PA = Public Address | | | | | | | | | | | | | | | |
|
| Triple diode triode | 9.5 | 0.30 | 200 | 1.0 | - | - | 2.3 | 50.0 | 1.4 | | | | B9A | 2 | |
| UHF frame grid triode | 4.0 | 0.30 | 175 | 12.0 | - | - | 1.5 | 4.85 | 14.0 | | | | B9A | 74 | |
| UHF frame grid triode | 3.8 | 0.30 | 160 | 12.5 | - | - | 1.25 | 13.5 | 4.8 | | | | B9A | 75 | |
PC95 | VHF frame grid triode | 3.6 | 0.30 | 200 | 10.0 | - | - | 1.2 | 7.6 | 10.5 | | | | B7G | 79 | |
| VHF triode | 4.5 | 0.30 | 135 | 11.0 | - | - | 1.0 | 5.0 | 13.0 | | | | B7G | 79 | |
| VHF triode for TV | 3.9 | 0.30 | 135 | 11.5 | - | - | 1.0 | 5.25 | 14.5 | | | | B7G | 83 | |
| VHF double triode for cascode TV amplifier | 7.0 | 0.30 | 90 | 12.0 | - | - | 1.5 | 4.0 | 6.0 | | | | B9A | 28 | |
| VHF double triode for TV | 9.0 | 0.30 | 90 | 15.0 | - | - | 1.2 | 2.9 | 12.3 | | | | B9A | 39 | |
| VHF frame-grid double triode for cascode amp. | 7.0 | 0.30 | 90 | 15.0 | - | - | 1.3 | 2.6 | 12.5 | | | | B9A | 39 | |
| VHF frame-grid double triode for cascode amp. | 7.2 | 0.30 | 90 | 15.0 | - | - | 1.2 | 3.0 | 12.0 | | | | B9A | 28 | |
| VM VHF frame grid double triode for cascode amp. | 7.6 | 0.30 | 90 | 15.0 | - | - | 1.4 | 2.5 | 12.5 | | | | B9A | 39 | |
| RF double triode for cascode amp | 7.0 | 0.30 | 90 | 15.0 | - | - | 1.2 | 3.0 | 9.0 | | | | B9A | 28 | |
|
| Triode & beam tetrode | 9.4 | 0.30 | 170 | 10.0 | 170 | 2.5 | 2.1 | | 8.0 | | | | B9A | 49 | |
| VHF triode pentode FC | 9.0 | 0.30 | p170 t100 | 10.0 14.0 | 170 | 2.8 | 2.0 2.0 | 400.0 4.0 | 6.2 5.0 | | | | B9A | 25 | |
| Triode pentode FC | 9.5 | 0.30 | p250 t250 | 5.2 18.0 | 117 | 1.9 | 0 1.0 | 5.0 | 1.9⅄ | | | | B9A | 25 | |
PCF84 | Triode & VHF pentode FC | 9.0 | 0.30 | p170 t100 | 8.0 14.0 | 170 | 2.7 | 0 2.0 | 400.0 4.0 | 2.5 | | | | B9A | 65 | |
| Triode & frame-grid pentode FC | 8.0 | 0.30 | p170 t100 | 10.0 14.0 | 150 | 3.3 | 1.2 3.0 | 350.0 | 12.0 5.7 | | | | B9A | 64 | |
| Triode pentode FC | 8.0 | 0.30 | mix160 osc170 | 13.0 8.5 | 135 | 2.5 | 1.7 1.0 | | 14.0 5.2 | | | | B10B | 3 | |
PCF201 | Triode pentode FC | 8.0 | 0.30 | mix160 osc100 | 13.0 14.0 | 110 | 5.3 | 1.4 | | 12.6 | | | | B10B | 3 | |
| Triode pentode FC | 9.0 | 0.3 | mix164 osc120 | 7.6 6.0 | 170 | 2.3 | | 600.0 | 3.3 | | | | B9A | 25 | |
| Triode & frame-grid VM pentode for FC and IF amplifier | 8.5 | 0.30 | mix173 osc100 | 10.0 15.0 | 119 | 3.0 | 1.4 3.0 | >350.0 | 5.0 | | | | B9A | 73 | |
| Triode & pentode for line oscillator circuits | 9.0 | 0.30 | p100 t200 | 6.0 3.5 | 100 | 1.7 | 2.0 2.0 | 400.0 20.0 | 5.5 3.5 | | | | B9A | 25 | |
| Triode & VM pentode FC | 8.0 | 0.30 | mix190 osc120 | 7.6 6.0 | 138 | 2.2 | 3.0 | 600.0 | 3.30 | | | | B9A | 42 | |
| AF triode& frame-grid pentode FC for TV | 8.0 | 0.30 | mix190 osc120 | 8.5 14.0 | 141 | | 3.0 | | 4.5 | | | | B9A | 73 | |
|
PCH200 | Triode heptode for sync pulse gen. & clipper | 8.5 | 0.30 | h14 t100 | 1.5 9.0 | 14 | 1.3 | 0 1.0 | 5.7 | 8.8 | | | | B10B | 4 | |
| Triode & output pentode for frame output or AF | 16.0 | 0.30 | p200 t100 | 35.0 3.5 | 200 | 8.0 | 16.0 0 | 20.0 32.0 | 6.4 2.2 | | | | B9A | 37 | |
| Triode & output pentode | 12.6 | 0.30 | p170 t250 | 30.0 10.5 | 170 | 5.0 | 9.5 8.5 | 7.7 | 5.5 10.5 | 5.5 | 2.5 | | B9A | 27 | |
| Triode & output pentode | 15.0 | 0.30 | p220 t220 | 18.0 18.0 | 220 | 3.0 | 3.4 3.3 | 150.0 | 10.0 9.7 | | | | B9A | 53 | |
| Triode & field output pentode for TV | 17.5 | 0.30 | p65 t100 | 285pk 10.5 | 210 | 45 | 1.0 0 | 9.0 | 7.0 | | | | B9A | 66 | |
| Triode output pentode | 13.3 | 0.30 | p230 t200 | 41.0 3.5 | 230 | 10.0 | 5.7 2.0 | 45.0 20.0 | 10.5 3.5 | | | | B9A | 76 | |
| Triode & output beam tetrode | 16.0 | 0.30 | p170 t100 | 50.0 10.0 | 170 | 3.0 | 15.0 2.1 | 4.2 | 7.3 4.3 | | | | B9A | 37 | |
| Triode & output beam tetrode | 16.0 | 0.30 | 170 100 | 45.0 10.0 | 170 | 8.7 | 13.5 2.1 | 4.2 | 7.5 2.1 | | | | B9A | 37 | |
| Triode & output beam tetrode | 13.0 | 0.30 | p170 t200 | 31.0 10.0 | 180 | 7.3 | 9.0 7.7 | 5.3 | 2.4 | 5.0 | 2.0 | | B9A | 26 | |
| See PCL85 | | | | | | | | | | | | | - | - | |
| Shunt stabiliser triode | 7.3 | 0.30 | 25kV max | 1.6 | | | 150.0 | | | | | | B9D+tc | 1 | |
| Double diode output pentode | 4.0 | 2.25 | 250 | 36.0 | 250 | 5.0 | 6.0 | 50.0 | 9.50 | 7.0 | 4.3 | | B7+tc | 22 | 1937 |
|
| Output pentode | 4.0 | 1.00 | 250 | 35.0 | 200 | 10.0 | 13.0 | 8.0 | 3.00 | 8.0 | 2.0 | | B5+st | 16 | 1931 |
| Output pentode | 4.0 | 1.50 1.35 | 250 250 | 32.0 36.0 | 250 250 | 12.0 3.0 | 22.0 20.0 | 40.0 | 2.80 | 6.0 6.0 | 3.4 3.8 | 500 | B5+st B7 | 16 24 | 1934 1933 1937 |
Pen4VB (= PenA4) | Output pentode | 4.0 | 1.95 | 250 | 36.0 | 250 | 5.0 | 5.8 | 50.0 | 9.50 | 8.0 | 3.8 | | B7 | 24 | 1935 |
Pen13C | Output pentode | 13.0 | 0.50 | 250 | 32.0 | 250 | 7.0 | 12.0 | | 6.00 | 6.5 | 3.2 | 250 | B7 | 24 | 1935 |
| Output pentode | 20.0 | 0.18 | 200 | 25.0 | 200 | 9.0 | 15.0 | | | 8.0 | 1.5 | | B5+st B7 | 16 24 | 1932 |
| Output pentode | 24.0 | 0.20 | 200 | 40.0 | 100 | 5.0 | 19.0 | | 3.10 | 5.0 | 3.0 | 420 | Ct8+tc | 4 | 1934 |
| Output pentode | 33.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.5 | 4.0 | 167 | B7 | 24 | 1935 |
Pen40DD | Double diode output pentode | 44.0 | 0.20 | 200 | 45.0 | 200 | 6.0 | 8.5 | 35.0 | 8.00 | 4.5 | 4.0 | 170 | B7+tc | 22 | 1939 |
Pen428 | Output pentode (Class AB push-pull) | 4.0 | 2.10 | 250 375 | 72.0 48.0 | 250 275 | 5.0 | | | | 3.2 6.5 | 8.0 28.0 | 150 165 | B7 | 24 | 1937 |
Pen650 (= EL50) | Output pentode | | | | | | | | | | | | | | | 1939 |
| Output pentode | 4.0 | 1.95 | 250 | 36.0 | 250 | 5.0 | 5.8 | 50.0 | 9.50 | 8.0 | 3.8 | 145 | B7 | 24 | 1937 |
| Output pentode | 4.0 | 2.10 | 250 | 72.0 | 275 | 7.0 | 14.0 | 22.0 | 8.50 | 3.5 | 8.8 | 175 | B7 | 24 | 1937 |
|
| RF pentode | 7.3 | 0.30 | 170 | 10.0 | 170 | 2.6 | 1.9 | | 8.8 | | | | B9A | 10 | |
| Double pentode for TV | 17.0 | 0.30 | amp150 o/p170 | 10.0 30.0 | 150 170 | 3.0 7.0 | 2.1 2.7 | 150.0 33.0 | 8.5 22.0 | | | | B10B | 1 | |
| Output pentode | 19.0 | 0.30 | 225 | 32 | 225 | 3.4 | 5.3 | 50.0 | 9.0 | 7.0 | 3.4 | 150 | IO | 36 | |
| Line t/b output pentode | 25.0 | 0.30 | 100 | 100 | 100 | 7.0 | 8.2 | 5.0 | 14.0 | | | | IO+tc | 129 | |
| Line t/b output pentode | 30.0 | 0.30 | 200 | | 200 | | | | | | | | IO+tc | 40 | |
PL38M | Line t/b output pentode | 30.0 | 0.30 | | | | | | | | | | | IO+tc | 40 | |
| Line t/b output pentode | 21.5 | 0.30 | 170 | 45 | 170 | 3.0 | 24.0 | 15.0 | 6.5 | | | | B9A+tc | 17 | |
PL81A | Line t/b output pentode | 21.5 | 0.30 | 170 | 45 | 170 | 2.2 | 24.5 | 11.5 | 6.0 | | | | B9A+tc | 17 | |
| Output pentode | 16.5 | 0.30 | 170 | 53.0 | 170 | 10.0 | 10.4 | 20.0 | 9.0 | 3.0 | 4.2 | 165 | B9A | 16 | |
| Video output pentode | 15.0 | 0.30 | 200 | 36 | 200 | 5.0 | 3.5 | 100.0 | 10.0 | | | | B9A | 14 | |
| Frame output pentode | 15.0 | 0.30 | 200 | 60 | 200 | 3.0 | 17.3 | 28.0 | 8.8 | | | | B9A | 16 | |
| Line t/b/ beam tetrode | 25.0 | 0.30 | 400 | | 250 | | | | | | | | IO+tc | 129 | |
|
| Line t/b output pentode | 27.0 | 0.30 | 75 | | 200 | | | | | | | | B9D+tc | 1 | |
| Line t/b output pentode | 27.0 | 0.30 | 75 | 440 | 300 | 30.0 | 10.0 | | | | | | B9D+tc | 1 | |
PL505 | Line t/b output pentode | 40.0 | 0.30 | 160 | 1.4amp | 160 | 45.0 | 0 | | | | | | B9D+tc | 7 | |
| Field output pentode for colour TV | 17.0 | 0.30 | 190 | 60 | 190 | 5.0 | 17.0 | 10.0 | 9.0 | | | | B9D | 6 | |
| Line t/b output pentode | 40.0 | 0.30 | 50 | 800.0 | 175 | 70 | 10.0 | | | | | | B9D+tc | 7 | |
| Triode & output beam tetrode | 12.6 | 0.30 | 170 | 32.0 | 180 | 6.5 | 10.3 | | 7.2 | 6.0 | 2.0 | 270 | B9A | 27 | |
| Video output pentode | 16.0 | 0.30 | 170 | 30 | 170 | 6.5 | 1.3 | | 40.0 | | | | B9A | 91 | |
PL820 | Line t/b output pentode | 21.5 | 0.30 | 200 | 40 | 200 | 2.8 | 28.0 | 11.0 | 6.0 | | | | B9A+tc | 17 | |
PM0 | General-purpose triode | 1.4* | 0.14 | 80 | | - | - | | | | | | | B4 | 1 | 1926 |
PM1 | General-purpose triode | 1.8* | 0.10 | 100 | 1.6 | - | - | 2.0 | 28.0 | 0.48 | | | | B4 | 1 | 1926 |
| RCC triode | 2.0* | 0.10 | 150 150 | 0.8 1.0 | - | - | 1.5 1.0 | 51.0 41.6 | 0.70 1.00 | | | | B4 | 1 | 1927 1931 |
| Bi-grid FC or AF amplifier | 2.0* | 0.10 | 80 20 | 6.0 2.6 | 20 20 | - | 6.0 2.0 | | 0.80 0.80 | | | | B4+st | 28 | 1931 |
|
| General-purpose triode | 2.0* | 0.10 | 135 | 1.5 | - | - | 3.0 | 23.0 | 0.80 | | | | B4 | 1 | 1926 |
| General-purpose triode (improved version) | 2.0* | 0.10 | 150 150 | 2.0 2.0 | - | - | 3.0 3.0 | 14.0 20.0 | 2.00 1.40 | | | | B4 | 1 | 1931 1932 |
| Detector or AF triode | 2.0* | 0.10 | 150 | 4.0 | - | - | 7.5 | 12.0 | 0.90 | | | | B4 | 1 | 1926 |
| Output triode | 2.0* | 0.15 0.20 | 100 135 | 6.0 | - | - | 10.5 10.5 | 8.75 4.4 | 0.62 1.70 | 9.0 | 0.15 | | B4 | 1 | 1926 1929 |
| Output triode | 2.0* | 0.20 | 135 | 5.0 | - | - | 6.0 | 6.0 | 2.00 | 7.0 | 0.15 | | B4 | 1 | 1930 |
| Class B output triode | 2.0* | 0.20 | 120 | 3/20 | - | - | 0 | | | 14.0 | 1.25 | | B7 | 10 | 1933 |
PM2BA | Class B output triode | 2.0* | 0.20 | 120 | 3/20 | - | - | 4.5 | | | 14.0 | 1.45 | | B7 | 10 | 1934 |
PM2DL | Class B driver triode | 2.0* | 0.10 | 120 | 1.5 | - | - | 4.5 | 12.0 | 1.50 | | | | B4 | 1 | 1935 |
| Detector triode (Improved version) | 2.0* | 0.20 0.10 | 150 135 | 2.7 2.0 | - | - | 6.0 4.5 | 10.7 18.0 | 1.25 1.00 | | | | B4 | 1 | 1928 1931 |
| Triode | 2.0* | 0.10 | 135 | 2.2 | - | - | 1.5 | 21.5 | 1.40 | | | | B4 | 1 | 1938 |
| Detector or AF triode (Improved version) | 4.0* | 0.10 0.075 | 100 100 | 2.0 | - | - | 0 | 16.0 13.0 | 0.84 1.05 | | | | B4 | 1 | 1926 1927 |
| RCC triode | 4.0* | 0.075 | 150 | 0.7 | - | - | 1.3 | 55.0 | 0.66 | | | | B4 | 1 | 1927 |
|
PM3D | AF triode | 4.0* | 0.10 | 150 | 3.25 | - | - | 4.0 | 8.0 | 3.00 | | | | B4 | 1 | 1931 |
| Output triode (Improved version) | 4.0* | 0.10 | 100 150 | 8.0 | - | - | 9.0 10.5 | 9.0 4.45 | 0.67 1.80 | 9.0 | 0.17 | | B4 | 1 | 1925 1929 |
| Detector or AF triode | 4.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | 1928 |
PM4DG | Bi-grid FC or AF amplifier | 4.0* | 0.08 | 100 | 4.0 | 21 | | 3.5 | | | | | | B4+st | 28 | 1931 |
PM4DX (was PM4D) | Detector or AF triode | 4.0* | 0.10 | 150 | 2.5 | - | - | 6.0 | 7.5 | 2.00 | | | | B4 | 1 | 1928 |
PM5 | General-purpose triode | 6.0* | 0.10 | 125 | | - | - | | 19.0 | 0.92 | | | | B4 | 1 | 1926 |
PM5A | RCC triode | 6.0* | 0.10 | 125 | | - | - | | 50.0 | 0.52 | | | | B4 | 1 | 1927 |
| RCC triode (Improved version) | 6.0* | 0.10 0.075 | 150 150 | 0.6 | - | - | 1.5 | 74.0 49.0 | 0.50 0.85 | | | | B4 | 1 | 1927 1927 |
| Detector triode | 6.0* | 0.075 | 150 | 1.2 | - | - | 3.0 | 26.0 | 1.30 | | | | B4 | 1 | 1930 |
| Detector or AF triode (Improved version) | 6.0* | 0.10 0.075 | 125 150 | 2.0 | - | - | 3.0 | 19.0 14.7 | 0.92 1.20 | | | | B4 | 1 | 1927 1927 |
| Output triode (improved version) | 6.0* | 0.10 | 100 150 | 10.0 | - | - | 6.0 9.0 | 5.7 3.6 | 1.25 2.25 | 5.0 | 0.8 | | B4 | 1 | 1926 1929 |
| Detector or AF triode | 6.0* | 0.10 | 150 | 2.5 | - | - | 4.5 | 9.0 | 2.00 | | | | B4 | 1 | 1928 |
|
PM12 | RF tetrode | 2.0* | 0.15 | 150 | 4.3 | 75 | 1.0 | 0 | 180.0 | 1.10 | | | | B4+tc | 2 | 1927 |
| RF tetrode | 2.0* | 0.18 | 125 | 2.0 | 75 | 0.4 | 0 | 330.0 | 1.50 | | | | B4+tc | 2 | 1932 |
| VM RF tetrode | 2.0* | 0.18 | 150 | 2.5 | 90 | 0.5 | 0/7 | 230.0 | 1.40 | | | | B4+tc | 2 | 1933 |
PM12V | VM RF tetrode | 2.0* | 0.15 | 150 | 5.0 | 90 | | 6.0 | | 0.75 | | | | B4+tc | 2 | 1932 |
PM13 | RF tetrode (DC) | 4.0* | 0.10 | 200 | 4.5 | 100 | | 1.0 | 400.0 | 0.90 | | | | B4+st B5+tc | 26 6 | 1929 |
| RF tetrode | 4.0* | 0.075 | 150 | 1.5 | 75 | | | 230.0 | 0.87 | | | | B4+tc | 2 | 1927 |
| RF tetrode | 6.0* | 0.075 | 150 | 1.75 | 75 | | | 200.0 | 1.00 | | | | B4+tc | 2 | 1927 |
| Output pentode | 2.0* | 0.30 | 150 150 | 13.0 15.0 | 150 150 | 4.0 4.0 | 12.0 10.0 | | 1.30 | 11.0 8.0 | 0.40 0.60 | | B4+st B5 | 26 6 | 1928 1929 |
| Output pentode | 2.0* | 0.20 0.15 | 150 135 | 9.5 5.6 | 150 135 | 2.0 | 4.5 4.5 | 150.0 | 2.50 2.20 | 15.0 19.0 | 0.42 0.34 | | B4+st B5 | 26 6 | 1932 1936 |
PM22C | Output pentode | 2.0* | 0.30 | 150 | 27.0 | 150 | 4.5 | 20.0 | | | 7.0 | 1.45 | | B5 | 6 | 1934 |
| Output pentode | 2.0* | 0.30 | 135 | 5.0 | 135 | 0.8 | 2.4 | | 3.00 | 24.0 | 0.30 | | B5 | 6 | 1936 |
| Output pentode (AC) | 4.0* | 0.15 | 150 | 20.0 | 150 | 5.0 | 12.0 | | 1.75 | 10.0 | 0.50 | | B4+st B5 | Z 6 | 1928 1929 |
|
| Output pentode (AC) | 4.0* | 0.275 | 300 300 | 21.0 20.0 | 200 200 | 6.0 3.5 | 21.0 22.5 | | 2.00 2.00 | 8.0 10.0 | 1.5 2.5 | | B5 | 6 | 1929 PW |
| Output pentode (AC) | 4.0* | 1.00 | 400 | 20.0 | 300 | 6.0 | 40.0 | | 2.10 | 8.0 | 3.0 | | B5 | 6 | 1930 |
PM24C | Output pentode (AC) | 4.0* | 1.00 | 400 | 30.0 | 200 | 4.5 | 28.0 | | 3.00 | 8.0 | 3.5 | | B5 | 6 | 1931 |
PM24D | Output pentode (AC) | 4.0* | 2.00 | 500 | 50.0 | 200 | 9.0 | 35.0 | | 4.00 | 7.0 | 10.0 | | B5 | 6 | 1931 |
PM24E | Output pentode (AC) | 4.0* | 2.00 | 500 | 50.0 | 200 | 9.0 | 35.0 | | | 7.0 | 10.0 | | B5 | 6 | 1937 |
| Output pentode (AC) | 4.0* | 1.10 | 250 | 30.0 | 250 | 5.6 | 17.0 | 43.0 | 3.00 | 7.0 | 2.8 | | B5 | 6 | 1932 |
PM25 | Output pentode (DC) | 5.0* | 0.10 | 150 | 10.0 | 150 | | 15.0 | 45.0 | 1.30 | 8.0 | | | B4+st B5 | 26 6 | 1929 |
PM26 | Output pentode | 6.0* | 0.17 | 150 | 17.0 | 150 | 4.0 | 15.0 | | 2.00 | 9.0 | 0.75 | | B4+st B5 | 26 6 | 1929 1929 |
| Output triode | 2.0* | 0.20 | 150 | 14.0 | - | - | 15.0 | 2.0 | 3.50 | 3.7 | 0.35 | | B4 | 1 | 1931 |
| Output triode (Improved version) (further improved) | 2.0* | 0.30 0.30 0.40 | 125 150 150 | 16.0 17.0 | - | - | 15.0 11.0 | 3.8 2.6 1.9 | 1.00 2.10 3.70 | 4.0 | 0.32 0.32 | | B4 | 1 | 1927 1929 1931 |
| Output triode (improved version) | 4.0* | 0.25 0.18 | 150 150 | 14.0 | - | - | 22.5 | 3.5 2.0 | 0.90 2.10 | | 0.38 | | B4 | 1 | 1927 1929 |
PM256 | Output triode (Improved version) (further improved) | 6.0* | 0.25 | 150 180 250 | 21.0 20.0 | - | - | 18.0 27.0 | 3.5 1.85 1.85 | 0.90 3.25 3.25 | 6.0 | 0.6 1.0 | | B4 | 1 | 1927 1929 1931 |
|
PM256A | Output triode | 6.0* | 0.25 | 200 | 30.0 | | | 33.0 | 1.4 | 2.60 | 3.5 | 0.9 | | B4 | 1 | 1930 |
QP22A | Double output pentode | 2.0* | 0.45 | 135 | 3.0 | Graded | | 10.5 | | 4.00 | 16.0 | 1.4 | | B9 | 8 | 1935 |
| Double output pentode | 2.0* | 0.30 | 135 | 3.8 | 135 | 0.5 | 11.7 | | | 14.7 | 1.33 | | B7 | 11 | 1938 |
RL16 (= EC52) | UHF oscillator triode | | | | | - | - | | | | | | | - | - | 1941 |
| UHF oscillator triode | | | | | - | - | | | | | | | - | - | 1941 |
RL37 (= EC54) | Grounded-grid triode | | | | | - | - | | | | | | | - | - | 1941 |
| VHF pentode | | | | | | | | | | | | | - | - | 1941 |
| RF tetrode | 4.0 | 1.00 | 200 | 1.5 | 75 | | 1.0 | 910.0 | 1.10 | | | | B4+st B5+tc | 34 2 | 1929 1929 |
| RF tetrode | 4.0 | 1.00 | 200 | 2.5 | 110 | 0.6 | 1.5 | 500.0 | 2.00 | | | | B5+tc | 2 | 1930 |
| RF tetrode | 4.0 | 1.00 | 200 | 4.6 | 110 | 1.05 | 1.5 | 300.0 | 2.50 | | | | B5+tc | 2 | 1930 |
| Diode and AF tetrode | 4.0 | 1.00 | 200 | | 100 | | 2.2 | | 3.00 | | | | B7+tc | 43 | 1933 |
| Diode and AF tetrode (DC) | 20.0 | 0.18 | 200 | 5.0 | 100 | | 1.5 | 120.0 | 2.80 | | | | B7+tc | 43 | 1934 |
|
| RF tetrode (DC) | 20.0 | 0.18 | 200 | 3.0 | 100 | 0.2 | | 275.0 | 2.00 | | | | B5+tc | 2 | 1932 |
| RF pentode | 2.0* | 0.18 | 135 | 3.0 | 135 | 1.0 | 0 | 700.0 | 1.80 | | | | B7+tc | 4 | 1934 |
| RF pentode | 4.0 | 1.00 | 200 | 3.0 | 100 | | 2.0 | 2.2M | 2.40 | | | | B5+tc B7+tc | 2 5 | 1933 1934 |
| RF pentode | 4.0 | 0.65 | 250 | 4.0 | 250 | 1.5 | 2.4 | 2M | 3.40 | | | | B7+tc | 6 | 1935 |
SP4C | RF pentode | 4.0 | 0.65 | 250 | 4.0 | 250 | 1.5 | 2.4 | 2M | 3.40 | | | | Ct8+tc | 15 | 1936 |
| RF pentode | 13.0 | 0.20 | 200 | 3.3 | 100 | 1.2 | 2.0 | 1.3M | 2.20 | | | | Ct8+tc | 15 | 1934 |
| RF pentode | 13.0 | 0.20 | 200 | 2.5 | 200 | 0.9 | 2.2 | 2.5M | 2.80 | | | | B7+tc | 6 | 1935 |
SP20 | RF pentode (DC) | 20.0 | 0.18 | 200 | 3.0 | 100 | 1.2 | | 1.5M | 3.50 | | | | B5+tc | 2 | 1933 |
T4D | VHF single diode | 4.0 | 0.20 | 50 | 5.0 | - | - | | | | | | | B3G | 1 | 1938 |
| VHF single diode | | | | | - | - | | | | | | | B3G | 1 | 1938 |
TDD2 | Double diode triode | 2.0* | 0.10 | 150 | 2.5 | - | - | 5.5 | 12.0 | 1.40 | | | | B5+tc | 5 | 1934 |
| Double diode triode | 2.0* | 0.12 | 135 | 1.95 | - | - | 1.5 | 25.0 | 1.20 | | | | B5+tc | 5 | 1934 |
|
| Double diode triode | 4.0 | 0.65 | 250 | 4.0 | - | - | 7.0 | 13.5 | 2.00 | | | | B7+tc | 7 | 1933 |
TDD13 | Double diode triode | 13.0 | 0.20 | 200 | 4.0 | - | - | 5.0 | 13.5 | 2.00 | | | | Ct8+tc | 7 | 1935 |
| Double diode triode | 13.0 | 0.20 | 200 | 4.0 | - | - | 5.0 | 13.5 | 2.00 | | | | B7+tc | 7 | 1935 |
TDD25 | Double diode triode | 25.0 | 0.18 | 200 | 4.0 | - | - | 4.0 | 15.0 | 2.00 | | | | B7+tc | 7 | 1933 |
| Triode hexode FC | 2.0* | 0.23 | h135 t100 | 0.95 4.0 | 60 | 1.6 | 1.5 | 600.0 | 0.43⅄ | | | | B7c | 34 | 1939 |
| Triode hexode FC | 4.0 | 1.00 | h250 t150 | 4.0 6.0 | 70 | 6.0 | 1.5 | 1.5M | 1.00⅄ 1.20 | | | 100 | B7+tc | 3 | 1936 |
TH4A | Triode hexode FC | 4.0 | 1.50 | h275 t100 | 3.25 22.0 | 100 | 7.0 | 2.5/25 | 1.5M 3.3 | 0.75⅄ 6.00 | | | | B7+tc | 3 | 1937 |
| Triode hexode FC | 4.0 | 1.45 | h250 t100 | 3.25 9.5 | 100 | 6.0 | 2.5 | 1.5M 3.2 | 0.75⅄ 5.50 | | | 140 | B7+tc | 3 | 1938 |
TH13C | Triode hexode FC | 13.0 | 0.31 | h250 t150 | 4.0 6.0 | 70 | 6.0 | 1.5 | 1.5M | 1.00⅄ 1.20 | | | 100 | B7+tc | 3 | 1936 |
| Triode hexode FC | 21.0 | 0.20 | h250 t130 | 4.0 6.0 | 70 | 6.0 | 1.5 | 1.5M | 1.00⅄ | | | 100 | B7+tc | 3 | 1936 |
| Triode hexode FC | 29.0 | 0.20 | h275 t100 | 3.25 22.0 | 100 | 7.0 | 2.5/25 | 1.5M 3.3 | 0.75⅄ 6.00 | | | | B7+tc | 3 | 1937 |
| Triode hexode FC | 29.0 | 0.20 | h250 t100 | 3.25 9.5 | 100 | 6.0 | 2.5 | 1.5M 3.2 | 0.75⅄ 5.50 | | | 140 | B7+tc | 3 | 1939 |
|
| Triode hexode FC | 6.3 | 0.20 | h250 t100 | 3.0 3.3 | 100 | 3.0 | 2/17 | 1.3M 8.6 | 0.65⅄ 2.80 | | | 215 | IO+tc | 3 | 1939 |
TP4 | Triode pentode FC | 4.0 | 1.25 | p250 t150 | 3.0 | 150 | 0.75 | 5.0 | 31.0 | 0.65⅄ | | | | B9+tc | 2 | 1934 |
| Secondary emission RF pentode | 4.0 | 1.10 | 250 | 8.0 | g2 150 k2 150 | 0.7 -6.0 | 2.5 | 100.0 | 14.50 | | | | B7 | 44 | 1938 |
| RF pentode - amplifier video output | 4.0 | 1.30 | 200 250 | 8.0 10.5 | 200 250 | 1.5 2.0 | 2.5 3.0 | 750.0 | 4.73 | 10.0 | | 260 250 | B7+tc | 6 | 1936 |
| AF or output triode | 4.0 | 1.00 | 250 | 20.0 | - | - | 16.0 | 3.3 | 3.2 | 10.0 | 0.5 | 800 | B5 | 1 | 1937 |
TT4A | AF or output triode | 4.0 | 1.00 | 250 | 20.0 | - | - | 9.0 | 4.4 | 4.1 | 5.0 | 0.4 | 450 | B5 | 1 | 1939 |
| Triple diode triode | 28.0 | 0.10 | 200 | 1.0 | - | - | 2.3 | 50.0 | 1.4 | | | | B9A | 2 | |
| Diode VM RF pentode | 12.6 | 0.10 | 200 | 5.0 | 85 | 1.5 | 2.0 | 1MΩ | 2.0 | | | | B8A | 11 | |
| Diode VM RF pentode | 12.6 | 0.10 | 200 | 5.0 | 85 | 1.5 | 2.0 | 1MΩ | 2.0 | | | | B8A | 12 | |
| Double diode | 19.0 | 0.10 | 150 | 9.0 | - | - | - | - | - | | | | B8A | 10 | |
| Double diode triode | 14.0 | 0.10 | 170 | 1.5 | - | - | 1.6 | 42.0 | 1.65 | | | | B8A | 9 | |
| Double diode triode | 14.0 | 0.10 | 170 | 1.5 | - | - | 1.55 | 42.0 | 1.65 | | | | B9A | 54 | |
|
| Double diode VM RF pentode | 17.0 | 0.10 | 200 | 5.0 | 85 | 1.75 | 2.0 | 1MΩ | 2.2 | | | | B9A | 12 | |
UBF89 | Double diode VM RF pentode | 19.0 | 0.10 | p200 d200 | 11.0 0.8 | 100 | 3.3 | 1.5/20 | 600.0 | 4.5 | | | | B9A | 12 | |
| Double diode output pentode | 55.0 | 0.10 | 200 | 55 | 200 | 9.5 | 13.0 | 25.0 | 8.0 | 3.5 | 4.8 | 200 | B8G | 6 | |
| Grounded grid triode | 9.5 | 0.10 | 170 | 8.5 | - | - | 1.0 | 11.0 | 5.9 | | | | B7G | 66 | |
| Double triode | 21.0 | 0.10 | 90 | 12.0 | - | - | 1.5 | 4.0 | 6.0 | | | | B9A | 28 | |
| Double triode | 26.0 | 0.10 | 200 | 10 | - | - | 2.4 | 7.7 | 6.0 | | | | B9A | 39 | |
| Triode & pentode | 27.0 | 0.10 | p170 t100 | 10.0 14.0 | 170 | 2.8 | 2.0 2.0 | 400.0 4.0 | 6.2 5.0 | | | | B9A | 25 | |
| Triode heptode FC | 20.0 | 0.10 | mix200 osc100 | 3.5 1.9 | 200 | 6.5 | 2.0 | 1MΩ | 0.75⅄ | 22.0 | | | B8G | 42 | |
UCH41 | Triode hexode FC | 14.0 | 0.10 | mix200 osc100 | 3.0 2.8 | 225 | 2.1 | 2.2 | 1MΩ | 0.5⅄ 0.56 | 10.0 | | 225 | B8A | 8 | |
| Triode hexode FC | 14.0 | 0.10 | mix200 osc100 | 3.0 3.1 | 85 | 3.0 | 2.0 | >1MΩ | 0.75⅄ 0.60 | 10.0 | | 180 | B8A | 3 | |
| Triode heptode FC | 19.0 | 0.10 | mix200 osc100 | 3.7 13.5 | 119 | 8.1 | 2.6 0 | 1MΩ 5.9 | 0.775⅄ 3.7 | | | | B9A | 24 | |
| Triode & output pentode | 50.0 | 0.10 | p200 t100 | 35.0 3.5 | 200 | 7.0 | 16.0 0 | 20.0 28.0 | 6.4 2.5 | 5.6 | 3.5 | | B9A | 37 | |
|
| Triode & output pentode | 38.0 | 0.10 | p170 t200 | 30.0 2.4 | 170 | 5.0 | 9.5 1.5 | 53.0 34.0 | 5.5 2.5 | 5.5 | 2.5 | | B9A | 27 | |
| VM RF pentode | 12.6 | 0.10 | 170 | 6.0 | 100 | 1.75 | 2.5 | 1MΩ | 2.3 | | | | B8A | 7 | |
| High slope RF pentode | 21.0 | 0.10 | 170 | 10.0 | 170 | 2.8 | 2.0 | 200.0 | 8.50 | | | | B8A | 8 | |
| High slope RF pentode | 19.0 | 0.10 | 170 | 10.0 | 170 | 2.5 | 2.0 | 400.0 | 7.4 | | | | B9A | 10 | |
UF85 | VM RF pentode | 19.0 | 0.10 | 200 | 11.4 | 116 | 3.1 | 2.3 | 350.0 | 6.1 | | | | B9A | 10 | |
UF86 | Low noise AF pentode | 12.6 | 0.10 | 200 | 3.0 | 140 | 0.6 | 2.0 | 2.5MΩ | 1.8 | | | | B9A | 23 | |
| VM RF pentode | 12.6 | 0.10 | 170 | 12.0 | 110 | 3.9 | 2.0 | 525.0 | 3.8 | | | | B9A | 36 | |
| Output pentode | 45.0 | 0.10 | 200 | 45.0 | 200 | 8.5 | 14.2 | 24.0 | 8.2 | 4.3 | 4.2 | | B8A | 23 | |
| Line t/b output pentode | 45.0 | 0.10 | 175 | 30.0 | 175 | 4.7 | 13.5 | | 7.1 | | | | B8A | 14 | |
| Video output pentode | 45.0 | 0.10 | 200 | 45.0 | 200 | 8.5 | 14.2 | 24.0 | 8.2 | 4.3 | 4.2 | | B8A | 7 | |
| Output pentode | 45.0 | 0.10 | 170 | 70 | 170 | 5.0 | 12.5 | 230.0 | 10.0 | 2.2 | 5.2 | 170 | B9A | 16 | |
| VM RF tetrode | 4.0 | 1.00 | 200 | 8.5 | 100 | 1.5 | 1.5/40 | 300.0 | 1.20 | | | | B5+tc | 2 | 1932 |
|
| VM RF pentode | 13.0 | 0.20 | 200 | 4.0 | 100 | 1.4 | 2.0 | 1M | 2.20 | | | | Ct8+tc | 15 | 1934 |
| VM RF pentode | 2.0* | 0.18 | 135 | 3.0 | 135 | 1.25 | 0 | 400..0 | 1.50 | | | | B7+tc | 4 | 1934 |
| VM RF pentode | 4.0 | 1.00 | 200 | 4.5 | 100 | 1.9 | 2/22 | 1M | 2.30 | | | | B5+tc B7+tc | 2 5 | 1933 1934 |
| VM RF pentode | 4.0 | 1.20 | 200 | 4.25 | 100 | 1.8 | 2.0 | 1.4M | 2.50 | | | | B5+tc B7+tc | 2 5 | 1934 1934 |
| VM RF pentode | 4.0 | 0.65 | 250 | 11.5 | 250 | 4.25 | 3.0 | | 2.00 | | | 160 | B7+tc | 6 | 1935 |
VP13C | VM RF pentode | 13.0 | 0.20 | 200 | 9.0 | 200 | 3.6 | 2.0 | | 2.20 | | | | B7+tc | 6 | 1935 |
VP20 | VM RF pentode (DC) | 20.0 | 0.18 | 200 | 4.0 | 100 | 1.8 | 1.5 | 2M | 2.50 | | | | B5+tc | 2 | 1933 |
| Hexode - as pentode as mixer, g2/g4 joined | 2.0* | 0.135 | 135 135 | 2.0 1.0 | 60 60 | 0.95 1.1 | 1.5 1.5 | 1.3M 1M | 1.4 0.45⅄ | | | | B7+tc | 28 | 1937 |
* Length of column. A negative value indicates overlapping
§§ Voltage reference tubes.