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

 Radvaco (Ratvaco)

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

B

General-purpose triode

4.0*

0.70

50-200

-

-

25.0

0.25

B4

1

1926

B.E.

General-purpose triode

3.5*

0.50

50-100

-

-

40.0

0.25

B4

1

1926

S.B.1

General-purpose triode

3.0*

0.06

30-100

-

-

25.0

0.40

B4

1

1926

S.B.2

Output triode

5-6*

0.25

120

-

-

B4

1

1926

S.B.3

General-purpose triode

4-5*

0.50

30-75

-

-

40.0

0.25

B4

1

1926

S.B.4

General-purpose triode

4.0*

0.70

50-200

-

-

25.0

0.40

B4

1

1926

S.B.5

Bi-Grid tetrode

4.0*

0.70

4-12

-

-

B4

1

1926

S.B.6

General-purpose triode

1.8*

0.15

30-100

-

-

40.0

0.25

B4

1

1926

S.B.8

General-purpose triode

1.0*

0.06

30-100

-

-

22.5

0.40

B4

1

1926

S.B.9

Output triode

1.0*

0.20

50-150

-

-

1.5-9

B4

1

1926

S.B.10

Output triode

1.8*

0.20

50-150

-

-

1.5-9

B4

1

1926