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

 Pix

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

2

Detector or AF triode

2.0*

0.10

150

1.5

-

-

4.0

20.0

1.00

B4

1

1932

3

AF triode

2.0*

0.10

150

3.4

-

-

7.5

12.0

0.90

B4

1

1932

4

RCC triode

2.0*

0.10

150

1.0

-

-

1.0

37.0

0.90

B4

1

1932

9

RF or detector triode

4.0*

0.07

150

-

-

21.0

1.20

B4

1

1932

10

AF triode

4.0*

0.07

150

-

-

8.0

1.20

B4

1

1932

11

RCC triode

4.0*

0.07

150

-

-

33.0

1.00

B4

1

1932

20

Output triode

2.0*

0.15

150

5.0

-

-

5.0

4.6

1.20

8.0

0.15

B4

1

1932

25

RF tetrode

2.0*

0.15

150

2.5

75

0.5

230.0

1.00

B4

1

1932

40

Output triode

4.0*

0.10

-

-

4.3

1.40

B4

1

1932

45

RF tetrode

4.0*

0.10

-

-

230.0

1.00

B4

1

1932

90/AC

RF or detector triode

4.0

1.00

200

3.0

-

-

1.5

23.0

1.70

B5

1

1932

100/AC

AF triode

4.0

1.00

200

5.0

-

-

6.0

7.5

2.00

B5

1

1932

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

120

Output triode

2.0*

0.20

150

12.0

-

-

12.0

3.9

1.80

6.0

0.20

B4

1

1932

140

Output triode

4.0*

0.15

-

-

4.5

2.00

B4

1

1932

210

See Mullard PM1HF

-

-

-

-

215 SVM

VM RF tetrode

2.0*

0.15

180

2.5

75

0.5/40

2.20

B4

1

1932

220

Output triode

2.0*

0.20

-

-

B4

1

230

Output triode

2.0*

0.30

150

18.0

-

-

20.0

2.3

3.00

4.0

0.30

B4

1

1932

420

Output triode

4.0*

0.20

-

-

2.5

2.00

B4

1

1932

P430

Output triode

4.0*

0.30

200

20.0

-

-

25.0

1.5

3.00

5.0

0.8

1200

B4

1

1932

450/AC

RF tetrode

4.0

1.00

200

3.5

75

0.75

200.0

3.00

B5+tc

2

1932

AC/4P

Output triode

4.0

1.00

180

7.0

-

-

15.0

3.6

2.50

5.0

0.4

2200

B5

1

1932

AC4 VM

VM RF tetrode

4.0

1.00

200

4.5

90

1.5/40

2.50

B5+tc

2

1932

P475

Output triode

4.0*

0.75

250

30.0

-

-

55.0

1.0

3.00

2.0

1.5

2000

B4

1

1932

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

P4100

Output triode

4.0*

1.00

300

90.0

-

-

40.0

1.5

4.00

4.0

4.0

500

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

 Pix

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

40/250

FW

DH

4.0

0.60

250

40

B4

5

1932

60/250

FW

DH

4.0

0.60

250

60

B4

5

1936

120/350

FW

IH

4.0

2.00

350

120

B4

14

1936

120/500

FW

DH

4.0

2.00

500

120

B4

5

1932

500

FW

DH

4.0

1.00

300

60

B4

5

1932