Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.

Triode Receiver Valves (pre-1926)^*

Type or
Trademark

Filament

Anode

Grid

r_a

g_m

μ

Year

Base

Notes
and applications

^{(1)The letters indicate the three types of filaments found on these valves. B = bright emitter, D = dull emitter, O = oxide-coated.}

Volts

Amps

Volts

-Volts

kΩ

mA/V

^{(2)The year shown is when it is believed the type was first issued. This date is accurate for most types but cannot be guaranteed for them all.}

^{(3)Pin-out details for non-exhibits can be found with the base details.}

  ^{★This table lists valves that were manufactured in the UK or which were claimed to be of UK manufacture. In practice several of the smaller companies imported their valves from abroad.}

 Cossor

P.1

B

4.0

0.75

30-120

3.0

25.0

0.27

7.0

1922

B4

General purpose

P.2 (red top)

B

4.0

0.74

30-120

3.0

40.0

0.25

10.0

1922

B4

RF amp./RCC

P.3 (green top)

D

4.5

0.25

50-150

4.5

9.0

0.89

8.0

1925

B4

AF amp./output

R.M.R.

B

4.0

30-45

1921

B4

General purpose. Soft

W.1

O

1.8

0.30

30-120

3.0

19.0

0.38

7.2

1924

B4

Det./AF Replaced P.1

W.2

O

1.8

0.30

30-120

3.0

30.0

0.35

10.5

1924

B4

RF/RCC. Replaced P.2

W.3

O

1.8

0.50

50-150

4.5

13.0

0.62

8.0

1925

B4

Output

W.R.1

O

2, 4 or 6

0.30

30-120

3.0

19.0

0.38

7.2

1924

B4/W

Each have 8Ω switched

Post-1925 amplifying valves, frequency changers
and signal diodes

Type

Description

Filament

Anode

Auxillary Grid

Grid

r_a

g_m/g_o

R_L

P_o

R_k

Base ^{(1)Pin-out details for non-exhibits can be found with the base details.}

Year

Volts

Amps

Volts

mA

Volts

mA

-V

kΩ

mA/V

kΩ

Watts

Ω

Type

Ref

 Cossor

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless

1A4E

VM RF pentode

1.4*

0.06

150

2.3

67.5

3.0

1M

0.75

USS4+tc

2

1940

1A6E

Heptode FC

1.4*

0.06

mix135
osc135

1.7
2.3

67.5
 

2.5
 

3.0
 

400.0
 

0.27⅄
 

USS6+tc

1

1940

1A7-G

Heptode FC

1.4*

0.05

mix 90
osc 90

0.6
1.2

45
-

0.7
-

0
 

600.0
 

0.25⅄
 

IO+tc

76

1940

1A7V-G

Heptode FC

1.4*

0.05

mix 90
osc 90

1.0
0.8

45
-

0.7
-

0
 

420.0
 

0.23⅄
 

IO+tc

76

1940

1AC6/DK92

Heptode FC

1.4*

0.05

mix 85
osc 85

0.7
 

60
 

0.15
 

0
 

650.0
 

0.65⅄
 

B7G

54

1C5-G

Output pentode

1.4*

0.10

90

7.8

90

3.5

7.5

115.0

1.55

8.0

0.24

IO

78

1940

1C6E

Heptode FC

2.0*

0.12

osc135
mix134

1.3
 

3.1
 

67.5
 

2.5
 

3.0
 

600.0
 

0.30⅄
 

USS6+tc

1

1940

1H5-G

Diode triode

1.4*

0.05

90

0.15

-

-

0

240.0

0.27

IO+tc

91

1940

1N5-G

RF pentode

1.4*

0.05

90

1.2

90

0.3

0

1.5M

0.75

IO+tc

77

1940

1N5V-G

VM RF pentode

1.4*

0.05

90

1.6

90

0.4

0

1M

0.70

IO+tc

77

1940

2.P

Output triode

2.0*

2.00

250

40.0

-

-

22.0

1150Ω

7.00

3.0

2.0

550

B4

1

1939

2.XP

Output triode

2.0*

2.00

300

50.0

-

-

36.0

900Ω

7.00

4.0

3.15

B4

1

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

3A4

Output pentode

1.4*

0.20*

150

13.3

90

2.2

8.4

100.0

1.90

8.0

0.70

B7G

7

4.SH = VR126 = CV1126

Hexode mixer

4.0

1.00

200

7.0

100

0.32⅄

B7+tc

49

PW

4.THA

Triode hexode FC

4.0

1.50

h250
t100

3.5
1.5

100
-

5.5
-

2.0
 

0.85⅄
 

B7+tc

3

1938

4.TP

Triode & pentode for t/b

4.0

1.40

p150

16.0

150

5.0

4.50

B7+tc

45

1939

4.TPB

RF pentode for TV

4.0

1.00

250

12.0

150

3.0

8.00

B7+tc

6

1939

4.TSA

Split anode pentode (Sync separator)

4.0

1.00

250

5.0

100

0

1.60

B7+tc

38

1938

4.TSP

RF pentode for TV

4.0

1.00

250

12.0

150

3.0

8.00

B7+tc

5

1939

4.XP

Output triode
(Improved version)
(Further improved)

4.0*
4.0*
 4.0*

0.60
0.60
1.00

200
200
250

35.0
45.0
48.0

-
-
 

-
-
 

40.0
23.0
28.5

1100Ω
1200Ω
900Ω

2.75
4.00
7.00

2.8
2.8
3.0

1.0
1.0
3.0

 
 
600

B4

1

1930
1931
1935

6A3

Output triode

6.3*

1.00

250

60.0

-

-

45.0

800Ω

5.25

2.5

USM4

1

1940

6A7E

Heptode FC

6.3

0.30

mix250
osc100

3.5
4.0

100
 

2.7
 

3.0
 

360.0
 

0.55⅄
 

USS7

1

1940

6A8EG

Heptode FC

6.3

0.30

mix250
osc100

2.5
3.8

100
 

2.7
 

3.0
 

360.0
 

0.55⅄
 

IO+tc

1

1940

6AB8/ECL80

Triode & pentode for TV

6.3

0.30

p200
t100

17.5
4.0

200
 

3.3
 

8.0
2.3

150.0
2.5

3.3
1.4

B9A

13

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

6AK8/EABC80

Triple diode triode

6.3

0.45

100

0.8

-

-

1.0

54.5

1.45

B9A

2

6AM5/EL91

RF & AF output pentode

6.3

0.20

250

16.0

250

2.3

13.5

130.0

2.50

B7G

25

6AQ8/ECC85

RF double triode

6.3

0.435

250

10.0

-

-

2.7

9.0

6.10

B9A

39

6AS6

RF pentode

6.3

0.175

250

5.2

120

3.5

2.0

110.0

4.0

B7G

32

6B4-G

Output triode

6.3*

1.00

250

60.0

-

-

45.0

800Ω

5.25

2.5

IO

81

1940

6B7E

Double diode pentode

6.3

0.30

250

9.0

100

3.0

650.0

1.12

USS7+tc

2

1940

6B8EG

Double diode pentode

6.3

0.30

250

10.0

100

3.0

600.0

1.32

IO+tc

15

1940

6BQ5/EL84

Output pentode

6.3

0.76

250

48.0

250

5.5

7.3

38.0

11.3

5.2

5.7

135

B9A

16

6BQ7A

Double triode

6.3

0.40

150

9.0

-

-

2.0

6.1

6.4

B9A

39

6C4

Output triode

6.3

0.15

250

10.5

-

-

8.5

7.7

2.2

B7G

15

6C8

Double triode

6.3

0.30

250

3.2

-

-

0

22.5

1.60

IO+tc

28

6CB6

RF pentode

6.3

0.30

200

9.5

150

2.8

600.0

6.2

B7G

32

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

6CH6

Video output pentode

6.3

0.75

250

40.0

250

6.0

4.5

50.-

11.0

12

B9A

19

6D6 = 6U7

VM RF pentode

6.3

0.30

250

8.2

100

2.0

3.0

800.0

1.60

USS6+tc

2

6F33

RF pentode

6.3

0.35

200

5.0

100

2.0

1.5

4.35

B7G

21

6F6EG

Output pentode

6.3

0.70

250

34.0

250

16.5

7.0

IO

36

1940

6F7-G

Triode pentode FC

6.3

0.30

250

100

3.0

0.30⅄

USS7+tc

13

1940

6H6-G

Double diode

6.3

0.30

117

8.0

-

-

-

-

-

IO

53

1940

6J5-G

General-purpose triode

6.3

0.30

250

9.0

-

-

8.0

7.7

2.60

900

IO

20

6J7-G

RF pentode

6.3

0.30

250

2.0

100

0.5

3.0

1.5M

1.25

IO+tc

8

6K5-G

High-μ triode

6.3

0.30

250

1.1

-

-

3.0

50.0

1.40

IO+tc

19

1940

6K6-G

Output pentode

6.3

0.40

315

22.5

285

9.0

21.0

75.0

2.10

9.0

4.5

IO

36

1940

6K7-G

VM RF pentode

6.3

0.30

250

10.5

125

2.6

3.0

600.0

1.65

IO+tc

8

1940

6L6

Output beam tetrode

6.3

0.90

300

54.5

200

5.6

13.0

33.0

5.2

4.5

6.5

220

IO

36

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

6N7-G

Class B double triode

6.3

0.80

300

35.0

-

-

0

8.0

10.0

IO

22

1940

6Q7-G

Double diode triode

6.3

0.30

250

1.1

-

-

3.0

58.0

1.20

IO

29

1940

6R7-G

Double diode triode

6.3

0.30

250

9.5

-

-

9.0

8.5

1.90

IO

29

1940

6SG7

VM RF pentode

6.3

0.30

250

9.2

150

3.4

1.5

1M

4.00

IO

14

6SH7

RF pentode

6.3

0.30

250

10.8

150

4.1

1.0

900.0

4.0

IO

14

6SK7

VM RF pentode

6.3

0.30

250

9.2

100

2.6

3.0

800.0

2.0

IO

10

6SS7

VM RF pentode

6.3

0.30

250

9.0

100

2.0

3.0

1M

1.85

IO

10

6V6

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

7B7

VM RF pentode

6.3

0.15

250

8.5

100

2.0

3.0

4.35

B8G

3

7C5

Output beam tetrode

6.3

0.45

315

35.0

215

6.0

13.0

77.0

3.75

8.5

5.5

315

B8G

10

7N7/PCC84

VHF double triode

7.0

0.30

90

12.0

-

-

1.5

4.0

6.00

B9A

28

7S7

Triode heptode FC

6.3

0.30

h250
t150

1.8
5.0

100
 

3.0
 

2.0
 

1.25M
 

0.525⅄
 

B8G

8

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

8A8/PCF80

VHF triode pentode FC

9.0

0.30

p170
t100

6.3
14.0

170
 

2.5
 

 
2.0

720.0
4.0

2.05⅄
5.0

0
 

B9A

25

12BH7

Double triode

6.3

0.6*

250

11.5

-

-

10.5

5.5

3.10

B9A

1

12H6

Double diode

12.6

0.15

117

8.0

-

-

-

-

-

IO

53

12SC7

Double triode

12.6

0.15

250

2.0

-

-

2.0

53.0

1.3

IO

25

12SR7

Double diode triode

12.6

0.15

250

9.5

-

-

9.0

8.5

1.9

IO

31

12SG7

VM RF pentode

12.6

0.15

250

9.2

150

3.4

1.5

1M

4.00

IO

14

13.DHA

Double diode triode

13.0

0.20

250

1.0

-

-

1.5

83.3

1.50

B7+tc

7

1934

13.PGA

Heptode FC

13.0

0.20

mix250
osc200

1.0
6.0

65
-

3.0
-

1.5
 

0.75⅄
 

B7+tc

2

1934

13.SPA

RF pentode

13.0

0.20

200

5.0

100

1.3

1M

2.50

B7+tc

6

1934

13.VPA

VM RF pentode

13.0

0.20

200

7.0

100

1.7

0/30

800.0

1.80

B7+tc

6

1935

14S7

Triode heptode FC

12.6

0.17

B8G

8

15

RF pentode (IH)

2.0

0.22

135

1.8

67.5

1.5

800.0

1.85

USS5+tc

1

1940

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

16A5/PL82

Output pentode

16.0

0.30

170

53.0

170

10.0

10.4

20.0

9.5

3.0

4.2

B9A

16

18E

Output pentode

14.0

0.30

250

34.0

250

6.5

16.5

54.0

2.50

7.0

3.2

USM6

8

1940

19

Class B double triode

2.0*

0.24

135

10.0

-

-

0

10.0

2.1

USS6

7

1940

24E

RF tetrode

2.5

1.75

250

4.0

90

1.7

3.0

600.0

1.05

USM5+tc

2

1940

27

Low-μ triode

2.5

1.75

180

5.0

-

-

13.5

9.2

0.97

USS5

1

1940

30

Low-μ triode

2.0*

0.06

135

3.0

-

-

9.0

7.5

1.25

USS4

1

1940

32E

RF tetrode

2.0*

0.06

180

1.7

67.5

0.4

3.0

1.2M

0.65

USM4+tc

2

1940

34E

VM RF pentode

2.0*

0.06

180

2.8

67.5

1.0

3.0

1M

0.62

USM4+tc

2

1940

35A5

Output beam tetrode

35.0

0.15

200

44.0

110

7.0

8.0

40.0

5.9

4.5

3.3

157

B8G

10

36E

RF tetrode

6.3

0.30

250

3.2

90

1.7

3.0

550.0

1.08

USS5+tc

1

1940

37

Low-μ triode

6.3

0.30

250

7.5

-

-

18.0

8.4

1.10

USS5

1

1940

38E

Output pentode

6.3

0.30

250

22.0

250

3.8

25.0

100.0

1.20

10.0

2.5

USS5+tc

2

1940

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

39/44E

VM RF pentode

6.3

0.30

180

5.8

90

3.0

750.0

1.00

USM5+tc

2

1940

40.PPA

Output pentode

40.0

0.20

150

36.0

150

8.0

25.0

4.00

4.0

2.3

600

B7

24

1934

41E

Output pentode

6.3

0.40

315

25.0

250

4.0

21.0

75.0

2.10

9.0

4.5

USS6

8

1940

41.FP

AF or output triode

4.0

1.00

250

18.0

-

-

18.0

2.5

2.80

8.0

0.9

B5

1

1941

41.MDG

Bi-grid tetrode†

4.0

1.00

200

40.0

0.25

B5

11

1932

41.MH

Detector triode

4.0

1.00

200

3.2

-

-

1.5

18.0

4.00

B5

1

1932

41.MHF

RF or detector triode
(Improved version)

4.0

1.00

180
 200

5.4
 3.0

-
-

-
-

3.0
3.0

14.0
14.5

1.80
 2.80

B5

1

1929
1931

41.MHL

RF or detector triode

4.0

1.00

200

4.0

-

-

3.0

11.5

4.50

B5

1

1931

41.MLF

AF triode

4.0

1.00

180

8.0

-

-

6.0

7.9

1.90

0.17

B5

1

1929

41.MP

Output triode (IH)

4.0

1.00

180
200

10.6
24.0

-
-

-
-

9.0
7.5

5.0
2.5

2.00
7.50

 
3.0

0.23
1.0

 
320

B5

1

1929
1931

41.MPG

Heptode FC

4.0

1.00

mix250
osc100

1.0
6.0

80
-

3.0
-

1.5
 

1.20⅄
 

B7+tc

2

1934

41.MPT

RF pentode

4.0

1.00

250

12.0

100

2.0

1.5

200.0

4.80

B7+tc

5

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

41.MRC

RCC or detector triode
(Improved version)

4.0

1.00

180
200

2.7
2.7

-
-

-
-

3.0
2.0

20.0
19.5

1.75
2.50

B5

1

1929
1931

41.MSG

RF tetrode

4.0

1.00

200

0.8

80

1.5

400.0

2.50

B5+tc

2

1930

41.MTA

High μ triode for t/b

4.0

1.00

100

4.9

-

-

0

18.0

4.00

B5

1

1937

41.MTB

Triode for push-pull t/b

4.0

1.00

200

3.4

-

-

1.0

2.60

B5

1

1937

41.MTL

Medium-μ triode

4.0

1.00

200

4.0

-

-

3.0

15.1

3.00

B5

1

1937

41.MTS

Split anode pentode

4.0

1.00

250

5.0

100

1.60

B7

20

1937

41.MXP

Output triode (IH)
(Improved version)

4.0

1.00

180
200

38.0
40.0

-
-

-
-

24.0
12.5

2.0
1.5

2.00
7.50

 
2.0

0.88
1.6

 
300

B5

1

1929

41.STH

Triode hexode FC

4.0

1.15

h250
t100

3.0
2.0

100
-

4.0
-

1.5
 

0.60⅄

B7+tc

3

1936

42E

Output pentode

6.3

0.70

250

34.0

250

6.5

16.5

80.0

2.50

7.0

3.2

410

USM6

8

1940

42.MP/Pen

Output pentode

4.0

2.00

250

32.0

250

6.0

5.5

7.00

8.0

3.1

140

B7

24

1934

42.MPT

RF power pentode

4.0

2.00

250

34.0

200

3.0

8.50

B7+tc

5

1937

42.OT

Output beam tetrode

4.0

2.00

250

34.0

250

6.0

5.5

7.00

8.0

3.1

140

B7

24

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

42.OT/DD

Double diode and output beam tetrode

4.0

2.00

250

34.0

250

7.0

5.5

7.00

6.5

3.1

130

B7+tc

9

1937

42.PTB

RF power pentode

4.0

2.00

200

34.0

200

6.5

3.0

100.0

8.50

B7

6

1937

42.SPT

Video amplifier pentode

4.0

2.00

250

27.0

250

15.0

15.0

11.00

B7

5

1937

43E

Output pentode

25.0

0.30

160

33.0

120

6.5

18.0

42.0

2.40

5.0

2.2

440

USM6

8

1940

45

Output triode

2.5*

1.50

275

36.0

-

-

56.0

1.7

2.05

4.6

2.0

USM4

1

1940

47E

Output pentode

2.5*

1.75

250

31.0

250

6.0

16.5

60.0

2.50

7.0

2.7

450

USM5

3

1940

61BT

Line scan output pentode

6.3

0.70

200

200

470

IO+tc

38

61SPT

RF pentode

6.3

0.15

250

64.0

50

15.0

10.5

11.0

IO

49

62BT

Line scan output pentode

6.3

1.27

180

180

160

IO+tc

38

62DDT/EBC41

Double diode triode

6.3

0.23

250

1.0

-

-

3.0

54.0

1.30

B8A

9

62TH/ECH42

Triode heptode FC

6.3

0.23

h250
t250

3.0
4.8

85
 

3.0
 

2.0
 

1M
 

0.75⅄
0.55

180
 

B8A

3

62VP/EF41

AF pentode

6.3

0.20

250

6.0

100

1.7

2.5

1M

4.70

B8A

7

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

63SPT/EF50

VHF pentode

6.3

0.30

250

10.0

250

3.0

2.0

1M

6.5

B9G

1

64.XP

Output triode

6.0*

4.00

500

120.0

-

-

120.0

0.8

2.50

10.0

B4

1

1929

67PT/EL41

Output pentode

6.3

0.70

250

36.0

250

5.2

7.0

40.0

10.0

7.0

4.5

170

B8A

23

75

Double diode triode

6.3

0.30

250

0.8

-

-

2.0

91.0

1.10

USS6+tc

1

1940

76

Low-μ triode

6.3

0.30

250

5.0

-

-

13.5

9.5

1.45

USS5

1

1940

77E

RF pentode

6.3

0.30

250

2.3

100

3.0

1.5M

1.25

USS6+tc

2

1940

78E

VM RF pentode

6.3

0.30

180

4.0

75

3.0

1M

1.10

USS6+tc

2

1940

79

Class B output triode

6.3

0.60

180

10.6

-

-

0

12.0

4.2

USS6+tc

6

1940

85

Double diode triode

6.3

0.30

250

8.0

-

-

20.0

7.5

1.10

USS6+tc

4

1940

116/Pen (ARP22)

Output pentode

11.5

0.65

250

40.0

250

10.0

7.00

B7+tc

15

WW2

141TH/UCH42

Triode hexode FC

14.0

0.10

h200
t110

3.2
4.2

85.0
 

3.35
 

2.0
 

1.25M
 

0.69⅄
 

B8A

3

142BT

Output beam tetrode

14.0

0.20

180

29.0

180

3.0

8.5

58.0

3.7

5.0

2.0

265

IO

36

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

171DDP/UBF80

Double diode VM RF pentode

17.0

0.10

170

5.0

85

1.75

2.0

900.0

2.2

B9A

12

185BTA

Line scan beam tetrode

18.0

0.45

180

180

140

IO+tc

38

202.DDT

Double diode triode

20.0

0.20

200

3.0

-

-

3.0

17.0

2.40

B7+tc

7

1936

202.MPG

Heptode FC

20.0

0.20

mix200
osc100

2.5
3.0

100
-

3.0
-

1.5
 

1.50⅄
 

B7+tc

2

1936

202.SPB

RF pentode

20.0

0.20

250

4.8

100

1.3

1.5

800.0

2.89

B7+tc

6

1938

202.STH

Triode hexode FC

20.0

0.20

h250
t100

3.0
2.0

100
-

4.0
-

1.5
 

0.60⅄
 

B7+tc

3

1937

202.VP

VM RF pentode

20.0

0.20

250

4.3

100

1.3

1.5

600.0

2.20

B7+tc

5

1938

202.VPB

VM RF pentode

20.0

0.20

250

4.3

100

1.3

1.5

600.0

2.20

B7+tc

6

1938

203.THA

Triode hexode FC

20.0

0.30

h250
t100

3.5
1.5

100
-

5.5
-

2.0
 

0.85⅄
 

B7+tc

3

1938

206.PT

AF pentode (hearing aid)

2.0*

0.06

35

3.35

35

0

0.80

None

1938

(210.D) =
(210) Det & LF
(black band)

Detector or AF triode

1.8*

0.10

100
120
120

-
-
-

-
-
-

22.0
22.0
12.0

0.41
 
0.80

B4

1

1926
1927
1928

210.DDT

Double diode triode

2.0*

0.10

85

0.35

-

-

1.5

58.5

0.48

B5+tc

5

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

210.Det (New Process)

Detector triode

2.0*

0.10

150

3.0

-

-

4.5

13.0

1.15

B4

1

1930

210.DG

Bi-grid tetrode†

2.0*

0.10

100

LT+

0

27.0

0.19

B5

11

1931

(210.H) =
(210) HF
(red band)

RF or RCC triode

1.8*

0.10

120
120
120

-
 
 

-
 
 

44.0
44.0
25.0

0.50
0.50
0.65

B4

1

1926
1927
1928

210.HF
(New Process)

General purpose triode

2.0*

0.10

150
150

2.3
1.6

-
-

-
-

3.0
3.0

20.0
15.8

1.00
1.50

B4

1

1929
 1931

210 HF & Det

See (210) HF

B4

1

210.LF
(New Process)

AF triode

2.0*

0.10

150
150

5.5
4.8

-
-

-
-

4.5
4.5

12.0
10.0

0.83
1.40

B4

1

1929
1931

210.HL (New Process)

RF or detector triode

2.0*

0.10

120

-

-

22.0

1.10

B4

1

1931

210.PG
= 210.SPG

Heptode FC

2.0*

0.10

mix150
osc150

0.4
1.1

40
-

0.8
-

0
 

0.45⅄
1.20

B7

1

1934

210.PGA

Heptode FC

2.0*

0.10

mix120
osc120

0.4
1.1

40
 

0.8
 

0
 

0.45⅄
 

B7

1

1938

(210).RC
(blue band)

RCC or detector triode

1.8*

0.10

120
120

-
-

-
-

70.0
60.0

0.57
0.60

B4

1

1927
1928

210.RC (New Process)

RCC or detector triode

2.0*

0.10

150

1.3

-

-

1.5

50.0

0.80

B4

1

1929

210.SG

RF tetrode

2.0*

0.10

120

250.0

0.30

B4+tc

2

1928

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

210.SPG

Heptode FC

2.0*

0.10

mix150
osc150

0.4
1.1

40
-

0.8
-

0
 

0.45⅄
 

B7

1

1936

210.SPT

RF pentode

2.0*

0.10

150

1.3

80

600.0

1.30

B4+tc
B7+tc

2
4

1934
1934

210.VPA

VM RF pentode

2.0*

0.10

120

2.0

70

0.7

1.5/17

1.5M

0.88

B7+tc

4

1938

210.VPT

VM RF pentode

2.0*

0.10

120

2.9

60

0.75

0/9

600.0

1.10

B4+tc
B7+tc

2
4

1934
1934

(215.P) Stentor 2 (green band)

Output triode

1.8*

0.15

110

-

-

8.0

0.80

B4

1

1927

215.P (New Process)

Output triode

2.0*

0.15

150

10.0

-

-

7.5

4.0

2.25

9.0

0.14

B4

1

1930

215.SG

RF tetrode

2.0*

0.15

150

2.5

80

300.0

1.10

B4+tc

2

1930

220.B

Class B double triode

2.0*

0.22

120

6.0

-

-

0

12.0

1.25

B7

10

1933

220.DD

Double diode

2.0*

0.20

20

1.0

-

-

B5

3

1934

220.HPT

Output pentode

2.0*

0.20

150

8.0

150

1.5

4.5

2.50

17.0

0.50

B4+st
B5

21
6

1932
1933

220.IPT = CV1333

RF pentode (IH)

2.0

0.20

120

2.2

60

0.5

1.5

400.0

1.00

B7

26

1938

220.LF (AR15)

Output triode (IH)

2.0

0.21

100

7.5

-

-

0

1.2

1.70

B5

1

1942

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

220.OT

Output beam tetrode

2.0*

0.20

150

9.5

150

2.0

4.5

2.50

20.0

0.5

B5

6

1937

(220.P) Stentor 2 (green band)

Output triode

1.8*

0.20

110

-

-

5.0

1.00

B4

1

1928

220.P (New Process)

Output triode

2.0*

0.20

150

11.0

-

-

9.0

4.0

2.00

9.0

0.17

B4

1

1929

220.PT

Output pentode

2.0*

0.20

150

19.0

150

4.0

9.0

2.50

7.5

1.0

B4+st
B5

21
6

1932
1933

220.RC (AR14)

Triode (IH)

2.0

0.21

100

2.5

-

-

0

37.0

1.35

B5

1

1942

220.SG

RF tetrode

2.0*

0.20

150

3.1

80

200.0

1.60

B4

2

1928

220.TH

Triode heptode FC

2.0*

0.20

h120
 t100

0.6
1.7

60
-

1.7
-

0
 

0.25⅄
 

B7+tc

34

1938

220.VPT (ARP24)

VM RF pentode (IH)

2.0

0.21

150

4.0

60

0

1.00

B7

40

1942

220.VS

VM RF tetrode

2.0*

0.20

150

1.6

80

0

400.0

1.60

B4+tc

2

1933

220.VSG

VM RF tetrode

2.0*

0.20

150

2.6

80

0

110.0

1.60

B4+tc

2

1931

230 (later 230 PT)

Output pentode

2.0*

0.30

180

20.0

2.00

B4+st

26

1928

230.HPT

Output pentode

2.0*

0.30

150

10.5

150

1.0

12.0

1.80

B4+st
B5

26
6

1931
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

230.P

Output triode

2.0*

0.30

110

-

-

4.0

1.00

B4

1

1928

230.PT

Output pentode

2.0*

0.30

180
150

14.0
19.0

120
150

1.6
4.0

9.0
9.0

20.0
 

2.00
 

11.0
 7.5

0.40
 

B4+st
B5

26
6

1929
1933

230.XP

Output triode

2.0*

0.30

150

22.0

-

-

18.0

1.5

3.00

3.5

0.45

B4

1

1929

240.B

Class B double triode

2.0*

0.40

150

8.5

-

-

0

8.0

2.0

B7

10

1933

240.QP

Double output pentode

2.0*

0.40

150

3.0

150

0.7

12.0

24.0

1.25

B7

11

1937

302.THA

Triode hexode FC

30.0

0.20

h250
t100

3.5
1.5

100
-

5.5
 -

2.0
 

0.85⅄
 

B7+tc

3

1940

332Pen/CL33

Output pentode

33.0

0.20

200

45.0

200

6.0

8.5

8.0

4.5

4.0

167

IO

36

402.OT

Output tetrode

40.0

0.20

250

32.0

250

7.8

12.0

7.00

8.0

2.5

310

B7+tc

15

1937

402.P

Output triode

40.0

0.20

200

40.0

-

-

12.5

1.3

7.50

2.5

1.6

320

B7+tc

23

1936

402.Pen

Output pentode

40.0

0.20

200

40.0

200

6.7

7.00

5.5

3.1

137

B7+tc

15

1936

402.Pen/A

Output pentode

40.0

0.20

150

56.0

150

11.0

9.0

8.00

2.5

3.0

130

B7+tc

15

1938

(410.H) =
(410) HF & Det
 (red band)

RF or detector triode

4.0*

0.10

120
120
150

 
 
1.5

-
-
-

-
-
-

 
 
4.5

 
20.0
20.0

 
1.00
1.00

B4

1

1927
1927
1928

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others

410.HF
 (New Process)

General purpose triode

4.0*

0.10

150
150

1.5
1.5

-
-

-
-

4.5
3.0

20.0
20.0

1.00
1.10

B4

1

1929
1931

(410).LF
(black band)

AF triode

4.0*

0.10

120
150

 
4.5

-
-

-
-