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Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.
    
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Help information: Abbreviations - Explanations - Notes.

Post-1925 amplifying valves, frequency changers
and signal diodes

Type
Description
Filament
Anode
Auxillary Grid
Grid
ra
gm/go
RL
Po
Rk
Base (1)Pin-out details for non-exhibits can be found with the base details.
Year
 
 
Volts
Amps
Volts
mA
Volts
mA
-V
mA/V
Watts
Ω
Type
Ref
 

Hivac

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
1A3
RF diode
1.4
0.15
120
0.5
-
-
B7G
13
6C4
RF power triode
6.3
0.15
250
10.5
-
-
8.5
7.70
2.20
B7G
15
12AU7
Double triode
12.6
0.15
250
10.5
-
-
8.5
7.70
2.20
B9A
1
All-Stage
See A15 below
B9
1936
A15
All-Stage Valve: (FC)
(RF amp)
(Output)
15.0
0.30
250
250
400
2.0
5.0
34.0
90
90
250
8.5
2.7
22.0
6.0
6.0
14.0
0.48⅄
1.20
-
-
6.5
IO
155
1937
AC/DD
Double diode
4.0
1.00
-
-
B5
B7
3
42
1934
AC/DDT
Double diode triode
4.0
1.00
200
3.5
-
-
3.0
15.0
2.30
B7+tc
7
1934
AC/HL
Medium-μ triode
4.0
1.00
200
5.0
-
-
3.0
10.0
3.50
B5
1
1934
AC/HP
RF pentode
4.0
1.00
200
3.0
100
1.0
850.0
3.20
B5+tc
B7+tc
2
5
1934
AC/L
Output triode
4.0
1.00
200
18.0
-
-
14.0
2.3
4.25
6.3
0.67
B5
1
1934
AC/Q
CD output tetrode
4.0
1.35
375
57.0
250
2.5
22.0
4.0
11.5
B7
24
1937
AC/QA
CD output tetrode
6.3
0.90
375
57.0
250
2.5
22.0
2.3
4.0
11.5
IO
36
1937
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
AC/SH
RF tetrode
4.0
1.00
200
4.5
80
0.5
800.0
3.50
B5+tc
2
1934
AC/SL
RF tetrode
4.0
1.00
200
2.4
80
0.3
225.0
3.30
B5+tc
2
1934
AC/TZ
Triode & CD output tetrode
6.3
Ct8
45
1938
AC/VH
VM RF tetrode
4.0
1.00
200
6.0
80
1.0
1.5
500.0
2.75
B5+tc
2
1934
AC/VP
VM RF pentode
4.0
1.00
200
6.0
100
2.0
1.5
1M
3.00
B5+tc
B7+tc
2
5
1934
AC/VPb
VM RF pentode
4.0
1.00
250
12.0
250
1.0
1.5
1M
4.00
B7+tc
6
1938
AC/VS
VM RF tetrode
4.0
1.00
200
5.0
80
0.7
1.5
400.0
3.00
B5+tc
2
1934
AC/Y (Harries)
Output pentode

CD output tetrode
4.0
1.00
250
250
32.0
32.0
250
250
5.5
4.3
17.5
10.0

3.501
7.5
6.5
3.4
3.0
B5+tc
 B7
B7
7
24
24
1934
1934
1935
AC/YY (Harries)
CD output tetrode
4.0
2.00
250
68.0
250
10.0
10.0
7.501
2.0
5.0
B7
24
1936
AC/Z (Harries)
Output pentode
CD output tetrode
4.0
2.00
250
250
32.0
32.0
250
250
6.0
4.3
5.5
5.5

8.001
6.5
6.5
3.2
3.0
B5+tc
B7
B7
7
24
24
1934
1934
1935
AC/ZDD
Double diode & CD output tetrode
4.0
2.00
250
32.0
250
4.3
5.5
8.001
6.5
3.0
B7+tc
9
1936
B220
Class B double triode
2.0*
0.20
150
2.5
-
-
0
14.5
1.25
B7
10
1933
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
B230
Class B double triode
2.0*
0.30
150
1.252
-
-
0
14.5
1.25
B7
10
1934
D210
Detector triode
2.0*
0.10
150
2.4
-
-
4.5
12.0
1.35
B4
1
1933
D210SW
Detector triode
2.0*
0.10
140
2.4
-
-
4.5
12.0
1.35
B4+tc
9
1936
DB240
Driver triode & Class B double triode
2.0*
0.40
B)150
D)150
1.252
 3.0
-
-
0
4.5

12.5

1.25
14.5
1.25
B7
46
1934
DDT13
Double diode triode
13.0
0.30
200
5.0
-
-
4.0
15.0
2.30
B7+tc
7
1936
DDT215
Double diode triode
2.0*
0.15
150
-
-
12.5
1.6
B5+tc
5
1937
DDT220
Double diode triode
2.0*
0.20
150
3.0
-
-
3.5
12.5
1.60
B5+tc
5
1934
FY
CD output tetrode
4.0*
1.00
250
32.0
250
6.0
10.0
5.00
6.0
3.0
B5
6
1936
H210
Medium-μ triode
2.0*
0.10
150
1.0
-
-
3.0
22.0
1.15
B4
1
1933
HL13
Medium-μ triode
13.0
0.30
200
6.0
-
-
2.75
10.0
3.50
B7+tc
23
1936
HP215
RF pentode mixer
2.0*
0.15
150
3.0
70
0.6
0
0.55⅄
B4+tc
B7+tc
2
4
1934
1934
J240
RF pentode & double triode
2.0*
0.40
B9
6
1935
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
L210
AF low-μ triode
2.0*
0.10
150
4.0
-
-
6.0
8.6
1.20
B4
1
1933
P215
Output triode
2.0*
0.15
150
8.0
-
-
12.0
3.6
2.20
10.0
0.15
B4
1
1935
P220
Output triode
2.0*
0.20
150
6.0
-
-
7.5
4.8
2.50
9.0
0.18
B4
1
1933
PP220
Output triode
2.0*
0.20
150
12.5
-
-
12.0
2.3
3.02
5.0
0.25
B4
1
1933
PX5
Output triode
4.0*
2.00
400
62.5
-
-
34.0
1.5
6.502
3.0
5.75
B4
1
1937
PX41
Output triode
4.0*
1.00
250
48.0
-
-
40.0
830Ω
6.002
3.5
2.5
B4
1
1936
PX230
Output triode
2.0*
0.30
150
17.5
-
-
15.0
1.852
3.502
4.0
0.45
B4
1
1933
PX230SW
Output triode
2.0*
0.30
150
17.5
-
-
15.0
1.852
3.502
4.0
0.45
B4+tc
9
1936
QP 240
Double output pentode
2.0*
0.40
150
14.0
150
1.2
18.0
2.301
14.5
1.4
B7
11
1934
SG210
RF tetrode
2.0*
0.10
150
2.0
80
1.25
250.0
1.00
B4+tc
2
1933
SG215
RF tetrode
2.0*
0.15
150
2.0
70
0.75
250.0
1.10
B4+c
2
1934
SG220
RF tetrode
2.0*
0.20
150
2.25
70
0.6
333.0
1.50
B4+tc
2
1934
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
SG220SW
RF tetrode
2.0*
0.20
150
2.4
70
0.9
1.5
330.0
1.50
B4+tc
3
1936
TP230
Triode pentode frequency changer
2.0*
0.30
p120
t120
1.1
0.75
60
-
0.35
-
0
0.32⅄
B9+tc
1
1935
VP13
VM RF pentode
13.0
0.30
200
6.3
100
2.0
1.5
3.00
B7+tc
5
1936
VP215
VM RF pentode
2.0*
0.15
150
2.9
75
0.7
0
400.0
1.25
B4+tc
B7+tc
2
4
1934
1934
VP215b
VM RF pentode
2.0*
0.15
120
3.25
120
0.95
0
1M
1.20
B7+tc
13
1938
VP215c
VM RF pentode
2.0*
0.15
120
3.25
120
0.95
0
1M
1.20
B7+tc
4
1938
VS210
VM RF tetrode
2.0*
0.20
150
6.0
75
1.5
0
110.0
1.00
B4+tc
2
1933
VS 215
VM RF tetrode
2.0*
0.15
150
6.0
75
1.5
0
110.0
1.00
B4+tc
2
1934
XD
Detector triode
2.0*
0.066
75
0.5
-
-
1.5
23.0
0.75
Sm4
1
1935
XD1.5V
Triode
1.5*
0.08
50
0.45
-
-
0
50.0
0.50
Sm4
1
XD2.0V
Triode
2.0*
0.08
50
0.65
-
-
0
38.0
0.56
Sm4
1
XFR1
RF pentode
1.2*
0.10
45
3.0
45
0.9
0
2.00
B5A
2
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
XFR2
RF pentode
1.35*
0.05
67.5
1.8
67.5
0.05
0
1.10
B5A
2
XFR3
RF triode
1.25*
0.12
135
4.0
5.0
1.65
B5A
5
XFR5
RF pentode
1.25*
20mA
67.5
1.8
67.5
0.5
0
1.10
B5A
2
XFW10
AF tetrode
0.675*
25mA
22.5
22.5
1.2M
B5A
1
XFW20
AF pentode
0.625*
12,5mA
22.5
22.5
0
B5A+tc
2
XFW30
Beam tetrode
0.625*
12.5mA
22.5
22.5
0
B5A
1
XFW40
Beam tetrode
0.625*
10mA
22.5
22.5
0
B5A
1
XFW50
Beam tetrode
0.625*
7.5mA
22.5
22.5
0
B5A
1
XFY10
Output pentode
1.25*
25mA
22.5
0.5
22.5
0.2
1.25
0.35
50.0
3mW
B5A
1
XFY11
Output pentode
1.25*
25mA
22.5
0.3
22.5
0.09
0
0.42
200.0
1.2mW
B5A
1
XFY12
Output pentode
1.25*
25mA
22.5
0.25
22.5
0.08
0.5
0.37
175.0
1.75mW
B5A
1
XFY14 = 5672
AF power pentode
1.25*
50mA
67.5
3.1
67.5
0.95
6.5
0.65
22.0
70mW
B5A
1
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
XFY15
AF power pentode
1.25*
20mA
67.5
3.1
67.5
0.95
6.5
0.65
70mW
B5A
1
XFY21
Output beam tetrode
1.25*
12.5mA
0
0.38
100.0
3.3mW
B5A
1
XFY22
Output beam tetrode
1.25*
12.5mA
22.5
0.3
22.5
0.075
1.2
0.36
100.0
2.3mW
B5A
1
XFY23
Output beam tetrode
1.25*
17.5mA
22.5
0.4
22.5
0.09
2.0
0.34
50.0
3.75mW
B5A
1
XFY31
Output beam tetrode
1.25*
12.5mA
22.5
0.38
22.5
0.095
0
0.41
100.0
1.8mW
B5A
1
XFY32
Output beam tetrode
1.25*
12.5mA
16.25
0.44
16.25
0.1
0
0.35
100.0
1.8mW
B5A
1
XFY33
Output beam tetrode
1.25*
17.5mA
15
0.2
15
0.05
1.2
0.23
75.0
1mW
B5A
1
XFY34
Output beam tetrode
1.25*
14mA
45
1.5
45
0.36
4.0
0.60
25.0
30mW
B5A
1
XFY35
Output beam tetrode
1.55*
25mA
45
0.75
45
0.22
1.5
0.57
60.0
11.5mW
B5A
1
XFY41
Output beam tetrode
1.55*
10mA
22.5
0.38
22.5
0.095
0
0.41
100.0
1.8mw
B5A
1
XFY43
Output beam tetrode
1.55*
10mA
15
0.2
15
0.05
1.2
0.23
75.0
1mW
B5A
1
XFY51
Output beam tetrode
1.25*
10mA
22.5
0.32
22.5
0.09
0
0.32
80.0
2.3mW
B5A
1
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
XFY53
Output beam tetrode
1.25*
10mA
22.5
0.45
22.5
0.17
3.0
0.34
40.0
3.75mW
B5A
1
XFY54
Output beam tetrode
1.25*
10mA
22.5
0.34
22.5
0.08
2.0
0.28
30.0
2.75mW
B5A
1
XHH
Double triode
2.0*
-
-
Sm4+st
3
XH1.5V
AF or detector triode
1.5*
0.08
50
0.45
-
-
0
50.0
0.50
Sm4
1
XH2.0V
Triode
2.0*
0.08
50
0.45
-
-
0
50.0
0.56
Sm4
1
XHP1.5V
Double power triode
1.5*
0.16
50
1.75
-
-
4.5
7.25
0.72
8.5
6.2mW
Sm5+tc
3
XL
Low-μ AF triode
2.0*
0.066
75
2.0
-
-
1.5
14.0
0.85
Sm4
1
1935
XL1.5V
AF or output triode
1.5*
0.08
50
0.7
-
-
1.0
20.0
0.60
Sm4
1
XL2.0V
AF or output triode
2.0*
0.08
50
1.
-
-
1.0
12.5
0.84
Sm4
1
XLO1.5V
Triode
1.5*
0.08
50
0.90
-
-
1.0
20.0
0.65
Sm4
1
XLO2.0V
Triode
2.0*
0.08
50
1.1
-
-
1.0
12.5
0.92
Sm4
1
XP
Output triode
2.0*
0.066
75
4.0
-
-
4.5
5.0
1.00
10.0
Sm4
1
1935
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
XP1.5V
Output triode
1.5*
0.08
50
1.75
-
-
4.5
7.25
0.72
Sm4
1
XP2.0V
Output triode
2.0*
0.08
50
2.0
-
-
3.0
6.0
1.0
Sm4
1
XR6
RF pentode
6.3
0.15
100
7.0
100
2.2
1.4
300.0
0.30
B8D
4
XR7
RF pentode
6.3
0.20
100
7.5
100
2.5
2.0
250.0
5.5
B8D
5
XR8
Triode
6.3
0.15
100
8.0
-
-
2.5
4.75
4.20
B8D
8
XSG
XSGSW
RF tetrode
2.0*
0.066
120
1.75
60
0.2
600.0
0.60
Sm4+tc
2
1935
1935
XSG1.5V
RF tetrode
1.5*
0.08
50
0.55
30
0.25
0
666.0
0.30
Sm4+tc
2
XSG2.0V
RF tetrode
2.0*
0.08
50
0.6
30
0.30
0
500.0
0.40
Sm4+tc
2
XV
Variable-μ RF tetrode
2.0*
0.08
50
0.4
30
0.4
0
1.5M
0.33
SM4+tc
2
PW
XVS2.0V
Variable-μ RF tetrode
2.0*
0.08
50
0.4
30
0.15
0
1.5M
0.33
Sm4+tc
2
XW
AF pentode
2.0*
0.08
50
0.95
45
0.3
0
1M
0.60
B5A
1
PW
XW0.75A
AF pentode
0.75*
0.033
30
0.45
30
-
0
1.5M
0.20
B5A
1
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
XW0.75B
AF pentode
0.675*
0.025
30
30
0
1M
0.18
B5A
1
XW1.5V
RF pentode
1.5*
0.08
50
0.75
45
0.2
0
1M
0.52
SM5+tc
2
XW2.0V
RF pentode
2.0*
0.08
50
0.95
45
0.30
0
1M
0.60
Sm5+tc
2
XY
Output pentode
2.0*
0.14
100
5.3
100
9.0
1.25
15.0
Sm5
1
1935
XY1.4A
Output pentode
1.4*
0.032
45
1.75
45
0.75
54.5
40.0
0.55
30.0
0.10
B5A
1
XY1.4B
Output pentode
1.25*
0.025
45
1.5
45
0.45
4.5
50.0
0.69
30.0
0.0275
B5A
1
XY1.4C
Output pentode
1.25*
0.025
45
0.5
45
0.1
1.5
250.0
0.50
100.0
0.0065
B5A
1
XY1.5V
Output pentode
1.5*
0.16
45
1.75
45
0.35
1.5
60.0
1.0
Sm5
1
XY2.0V
Output pentode
2.0*
0.16
50
1.75
50
0.40
2.0
60.0
1.4
Sm5
1
Y13 (Harries)
CD output tetrode
13.0
0.30
250
35.0
250
4.5
22.0
4.0
3.0
B7
24
1936
Y220 (Harries)
Output pentode

CD output tetrode
2.0*
0.20
150
150
11.5
10.5
150
150
2.0
1.3
6.0
4.5

2.501
12.0
11.5
0.5
0.5
B4+tc
B5
B5
7
6
6
1933

1935
Y230 (Harries)
CD output tetrode
2.0*
0.30
150
7.0
150
1.0
3.0
20.0
0.4
B5
6
1938
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
Z26 (Harries)
CD output tetrode
26.0
0.30
250
32.0
250
4.3
5.5
8.001
6.5
3.0
B7
24
1936
Z220 (Harries)
Output pentode

CD output tetrode
2.0*
0.20
150
150
18.0
18.0
150
150
4.0
2.1
9.0
6.0

2.503
7.6
7.5
0.75
1.0
B4+tc
B5
B5
7
5
6
1933

 1935

1 At Va = Vg2 = 100V, Vg1 = 0V

2 At Va = 100V, Vg = 0V (For B230 and DB240 refers to quiescent anode current)

3 At Va = Vg2 = 150V, Vg = 0V

CD = Critical Distance, B = Class B triodes, D = Driver triode (for DB240)

Rectifiers

Type
Class
Cathode
Va
DC Ia
PIV
DC Vo
Base
Year
 
 
Type
Volts
Amps
Max RMS
mA
Volts
Volts
Type
Ref
Year

 Hivac

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
HVU1
E
IH
4.0
1.00
6000
3
B4+tc
17
1937
MR1 = GU1 MOV
HW/MV
DH
4.0
3.00
1000
250
B4
4
1936
U26 = U30 M0V
FW
VD
IH
13.0
0.60*
250
110
120
75
B7
12
1936
UU60/250
FW
IH
4.0
1.25
300
75
B4
14
1935
UU120/350(A)
FW
IH
4.0
2.50
350
120
B4
14
1934
UU120/500
FW
IH
4.0
2.50
500
120
B4
14
1934

Thyratrons

Type
Heater
Anode
Control
fmax
Gas
Base
Year
 
Volts
Amps
Pk Volts
Pk mA
Ratio
KHz
 
Type
Ref
Year

 Hivac

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
GR1
Mercury
GR2
Argon
XC13
Cold
200
7.5
Wires
XC18
Cold
200
1.0
Wires
XC23
Cold
7.5
Wires
XC24
Twin-trigger version of XC18
XFG1
1.2
50mA
45
Wires
XG2
6.3
0.15
500
100
200
0.2
B8D
19
XG3
Twin-grid version of XG2

Barretters

Type
Current
Voltage
Base
Year
 
Amps
Min-Max
Type
Ref
Year

 Hivac

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
XB1
0.30
9-16
B7G
57
XB2
0.305
7.4-12.4
B7G
57

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