Radio Valve Data: 1915-1960

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

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

 Fotos

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

BA 9

General purpose triode

1.9*

0.05

-

-

B4

1

1929

BC 9

Low-μ triode

2.0*

0.15

150

3.0

-

-

6.0

9.0

1.00

B4

1

1929

BC 18

Low-μ triode

2.0*

0.15

200

2.0

-

-

3.0

20.0

0.80

B4

1

1930

BC 40

Medium-μ triode

2.0*

0.15

200

2.0

-

-

1.5

50.0

0.70

B4

1

1930

BC 150

RF tetrode

2.0*

0.30

150

3.0

90

170.0

1.00

B4

1

1930

BD 5

Output triode

2.0*

0.30

150

18.0

-

-

25.0

2.5

2.00

5.5

0.25

B4

1

1930

BD 9

Output triode

2.0*

0.30

150

10.0

-

-

9.0

4.5

2.00

9.5

0.15

B4

1

1929

BD 100

Output pentode

2.0*

0.40

150

10.0

150

3.5

15.0

1.80

10.0

0.50

B5

6

1930

BF 100

Output pentode

2.0*

0.60

300

18.0

150

6.0

20.0

2.50

8.0

1.1

B5

6

1930

C 9

Low-μ triode

4.0*

0.07

150

3.0

-

-

6.0

9.0

1.00

B4

1

1930

C 150

RF tetrode

4.0*

0.15

150

3.00

90

170.0

1.00

B4+tc

2

1930

D 5

Output triode

4.0*

0.15

150

18.0

-

-

25.0

2.5

2.00

5.5

0.35

B4

1

1930

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

D 9

Output triode

4.0*

0.15

150

10.0

-

-

9.0

4.5

2.00

9.5

0.17

B4

1

1930

D 15

Low-μ triode

4.0*

0.15

150

3.0

-

-

3.0

7.5

2.00

B4

1

1930

D 40

Medium-μ triode

4.0*

0.15

200

2.0

-

-

1.5

30.0

1.20

B4

1

1930

D 100

Output pentode

4.0*

0.20

150

10.0

150

3.5

15.0

1.80

10.0

0.50

B5

6

1930

F 5

Output triode

4.0*

0.50

250

30.0

-

-

30.0

1.5

3.50

4.0

1.0

B4

1

1930

F 10

Output triode

4.0*

0.50

250

30.0

-

-

18.0

1.8

5.50

4.5

1.0

B4

1

1930

F 100

Output pentode

4.0*

0.30

300

18.0

150

6.0

20.0

2.50

8.0

1.1

B4+st
B5

26
6

1930

P 4150

RF tetrode

4.0

1.00

200

3.5

80

-

125.0

2.00

B5+tc

2

1930

S 415

Medium-μ triode

4.0

1.00

200

3.0

-

-

6.0

7.5

2.00

B5

1

1930

S 440

Low-μ triode

4.0

1.00

200

3.0

-

-

1.5

20.0

2.00

B5

1

1930

S 4150

RF tetrode

4.0

1.00

200

3.0

80

125.0

3.20

B5+tc

2

1930

T 425

Medium-μ triode

4.0

1.00

200

3.0

-

-

1.5

8.0

3.00

B5

1

1930

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