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

 ETA

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

BW303

Output triode

2.0*

0.32

150

11.0

-

-

25.0

2.7

1.10

6.0

0.25

B4

1

1931

BW602

Output triode

2.0*

0.32

150

12.0

-

-

12.0

1.9

3.40

5.5

0.33

B4

1

1931

BW1304

Output triode

2.0*

0.20

150

6.0

-

-

6.0

4.0

3.20

8.0

0.13

B4

1

1931

BX604

Output triode

2.0*

0.20

150

10.0

-

-

12.0

4.0

1.50

8.5

0.17

B4

1

1931

BY3

Output pentode

2.0*

0.30

150

10.0

150

8.0

4.5

7.5

0.45

B4+st
B5+tc

26
6

1933

BY6

RF tetrode

2.0*"

0.15

150

0.7

60

300.0

1.10

B4+tc

2

1931

BY1210

Low-μ triode

2.0*

0.11

150

4.0

-

-

5.0

10.0

1.20

B4

2

1931

BY1814

General-purpose triode

2.0*

0.12

150

3.0

-

-

3.0

18.0

1.30

B4

2

1931

BY1815

Low-μ triode

2.0*

0.12

150

3.0

-

-

2.5

14.0

1.30

B4

2

1933

BY2010

General purpose triode

2.0*

0.10

B4

1

BY2020

General purpose triode

2.0*

0.11

150

2.0

-

-

1.5

20.0

1.00

B4

1

1931

BY2023

General purpose triode

2.0*

0.10

-

-

B4

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

DW2

RF tetrode

4.0

1.00

150

2.5

75

200.0

0.85

B5+tc

2

1931

DW3

Output pentode

4.0*

0.23

300

20.0

200

5.0

19.0

7.5

1.5

1000

B4+st
B5

26
6

1932

DW6

RF tetrode

4.0

1.00

200

0.75

85

800.0

1.20

B5+tc

2

1931

DW7

RF tetrode

4.0

1.00

200

5.0

80

200.0

3.00

B5+tc

2

1932

DW8

VM RF tetrode

4.0

1.00

250

9.0

100

1.5

2.00

B5+tc

2

1932

DW9

Output pentode

4.0

1.00

300

32.0

250

7.0

10.5

7.8

2.0

300

B5+st

16

1932

DW302

Output triode

4.0*

1.05

250

33.0

-

-

50.0

1.8

1.90

4.0

1.6

1500

B4

1

1931

DW702

Output triode

4.0*

0.23

200

18.0

-

-

20.0

2.25

3.20

5.0

0.6

1200

B4

1

1931

DW704

Output triode (IH)

4.0

1.00

150

10.0

-

-

14.0

4.5

1.50

7.0

0.18

1200

B5

1

1931

DW802

Output triode (IH)

4.0

0.57

250

26.0

-

-

25.0

2.0

4.00

5.0

1.3

1000

B5

1

1932

DW1003

Output triode (IH)

4.0

1.00

200

20.0

-

-

12.5

3.3

3.30

7.0

0.38

1000

B5

1

1931

DW1508

Low-μ triode (IH)

4.0

1.00

150

5.0

-

-

6.0

7.5

2.00

B5

1

1931

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

DW4011

Medium-μ triode

4.0

1.00

200

5.0

-

-

5.0

11.0

3.60

B5

1

1933

DW4023

General purpose triode

4.0

1.00

150

2.5

-

-

2.0

23.0

1.75

B5

1

1931

DX502

Output triode

4.0*

0.15

150

12.0

-

-

17.0

2.1

2.40

5.0

0.33

B4

1

1931

GW402

Output triode

7.5*

1.25

450

55.0

-

-

80.0

1.8

1.80

4.0

6.0

1750

B4

1

1932

Rectifiers

Type

Class

Cathode

Va

DC Ia

PIV

DC Vo

Base

Year

Type

Volts

Amps

Max RMS

mA

Volts

Volts

Type

Ref

Year

 ETA

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

D3-50B

FW

DH

4.0

0.70

300

50

B4

5

1931

D3-80B

FW

DH

4.0

2.00

350

80

B4

5

1931

D5-125B

FW

DH

4.0

2.10

500

750

B4

5

1932

G7-85

HW

DH

7.5

1.25

700

85

B4

5

1932