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Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.
    
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Help information: Abbreviations - Explanations - Notes.

Post-1925 amplifying valves, frequency changers
and signal diodes

Type
Description
Filament
Anode
Auxillary Grid
Grid
ra
gm/go
RL
Po
Rk
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
 

 Lissen

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
AC/AVC
Diode and VM RF pentode
4.0
1.00
200
3.0
150
1.0
0
500.0
2.00
B5+2st
†
1933
AC/FC
Triode hexode
4.0
1.40
h250
t150
2.5
1.6
100
 
3.5
 
1.5
 
500.0
10.0
0.65⅄
 
B7+tc
3
1934
AC/HL
Detector triode
4.0
1.00
200
3.0
-
-
4.5
10.0
4.00
B5
1
1932
AC/P
Output triode
4.0
1.00
200
20.0
-
-
13.5
2.8
3.60
6.0
0.68
B5
1
1932
AC/PT
Output pentode
4.0
1.00
250
250
31.0
31.0
200
200
4.0
4.0
10.0
8.0
7.5
7.5
2.00
3.00
B5+st
B7
16
24
1932
1935
AC/SG
RF tetrode
4.0
1.00
200
7.0
80
0.50
340.0
4.00
B5+tc
2
1932
AC/SGV
VM RF tetrode
4.0
1.00
200
6.0
80
0.50
1.5
300.0
4.00
B5+tc
2
1932
AC/SP
RF pentode
4.0
1.00
250
3.0
100
1.0
1M
3.00
B7+tc
5
1934
AC/SPV
VM RF pentode
4.0
1.00
250
4.0
100
1.3
1.5
1M
3.00
B7+tc
5
1934
AVC2
Diode and VM RF pentode
4.0*
0.15
150
2.0
100
0.50
0
500.0
1.00
B4+2st
23
1933
B2 (two required)
Class B single triode
2.0*
0.10
150
4.0
-
-
0
15.0
2.00
B4
1
1933
BB220A
Class B double triode
2.0*
0.20
150
4.0
-
-
3.0
10.0
2.50
B7
10
1934
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
BB240
Class B double triode
2.0*
0.40
150
5.4
-
-
0
1.40
7.5
3.20
B7
10
1933
BB240A
Class B double triode
2.0*
0.40
150
5.0
-
-
3.0
8.0
3.50
B7
10
1934
FC2
Triode hexode FC
2.0*
0.20
h150
t100
1.2
0.8
70
 
1.2
 
0
 
500.0
12.5
0.40⅄
 
B7+tc
34
1934
H2
RF or detector triode
2.0*
0.10
150
1.0
-
-
1.5
45.0
1.10
B4
1
1931
H210
RF or RCC triode
2.0*
0.10
150
0.5
-
-
1.5
58.0
0.60
B4
1
1929
H410
RF or RCC triode
4.0*
0.10
150
0.5
-
-
1.5
60.0
0.66
B4
1
1930
H610
RF or RCC triode
6.0*
0.10
150
0.5
-
-
1.5
60.0
0.66
B4
1
1930
HL2
Detector triode
2.0*
0.10
150
1.5
-
-
3.0
22.0
1.60
B4
1
1931
HL16
Detector or AF triode
16.0
0.25
200
3.0
-
-
4.5
10.0
4.00
B5
1
1932
HL210
General-purpose triode
2.0*
0.10
150
1.0
-
-
1.5
21.0
0.85
B4
1
1929
HLD410
General-purpose triode
4.0*
0.10
150
1.0
-
-
1.5
21.0
1.20
B4
1
1930
HLD610
General-purpose triode
6.0*
0.10
150
1.0
-
-
1.5
21.0
1.20
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
L2
AF triode
2.0*
0.10
150
5.0
-
-
3.0
10.0
1.90
B4
1
1931
L2/D
Diode and AF triode
2.0*
0.10
150
2.0
-
-
4.5
12.0
1.50
B5
1933
L210
AF triode
2.0*
0.10
150
5.0
-
-
6.0
10.0
1.00
B4
1
1929
L410
AF triode
4.0*
0.10
150
6.0
-
-
4.5
8.5
1.80
B4
1
1930
L610
AF triode
6.0*
0.10
150
5.0
-
-
4.5
8.0
2.00
B4
1
1930
LP2
Output triode
2.0*
0.20
150
9.0
-
-
6.0
3.5
3.50
9.0
0.20
B4
1
1931
P220
Output triode
2.0*
0.20
150
7.6
-
-
13.5
4.0
1.75
10.0
0.16
B4
1
1929
P220A
Output triode
2.0*
0.20
150
14.0
-
-
15.0
1.7
3.50
8.0
0.35
B4
1
1931
P240A
Output triode
2.0*
0.40
150
25.0
-
-
21.0
1.0
5.00
3.5
0.55
B4
1
1931
P410
Output triode
4.0*
0.10
150
7.0
-
-
10.5
4.0
2.00
8.5
0.16
B4
1
1930
P425
Output triode
4.0*
0.25
200
25.0
-
-
32.0
1.5
3.00
5.0
0.80
B4
1
1930
P610
Output triode
6.0*
0.10
150
9.0
-
-
10.5
3.2
2.50
7.0
0.16
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
P625
Output triode
6.0*
0.25
200
18.0
-
-
16.5
2.5
3.00
5.5
0.65
B4
1
1930
P625A
Output triode
6.0*
0.25
200
30.0
-
-
30.0
1.5
3.00
3.5
0.90
B4
1
1930
PT2A
Output pentode
2.0*
0.20
150
150
18.0
18.0
150
150
3.0
3.0
10.5
10.5
8.5
8.5
1.10
1.10
B4+st
B5
26
6
1933
1936
PT16
Output pentode
16.0
0.25
250
31.0
200
4.0
10.0
7.5
0.30
B5
6
1933
PT220A
Output pentode
2.0*
0.20
150
15.0
150
4.0
9.0
2.50
10.0
0.55
B4+st
26
1931
PT225
Output pentode
2.0*
0.25
150
150
6.0
8.0
150
150
1.5
2.0
6.0
6.0
 
71.0
1.40
1.40
20.0
18.7
0.25
0.30
B4+st
B5
26
6
1929
1932
PT240
Output pentode
2.0*
0.40
150
200
13.0
16.0
120
150
2.0
4.0
9.0
10.5
 
28.0
2.00
2.30
9.0
12.5
0.45
0.80
B4+st
B5
26
6
1929
1932
PT250
Output pentode
2.0*
0.50
250
40.0
250
7.0
15.0
7.0
2.50
B5
6
1934
PT425
Output pentode
4.0*
0.25
150
200
16.0
18.0
150
150
2.0
4.5
10.5
18.0
 
28.0
2.00
2.50
8.0
11.0
0.65
0.90
B4+st
B5
26
 6
1931
1932
PT611
Output pentode
6.0*
0.11
150
100
71.0
1.40
0.30
B4+st
26
1932
PT625
Output pentode
6.0*
0.25
200
200
20.0
20.0
150
150
3.0
5.0
10.5
10.5
 
24.0
2.50
2.50
9.0
10.0
1.00
1.00
B4+st
B5
26
6
1930
1932
PX240
Output triode
2.0*
0.40
200
25.0
-
-
32.0
1.5
3.00
5.0
0.80
B4
1
1929
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
QP240
QPP output pentode
2.0*
0.40
150
4.0
-
-
15.0
22.0
1.50
B7
11
1934
SG2V
VM RF tetrode
2.0*
0.15
150
4.0
80
0.25
0
400.0
1.20
B4+tc
2
1932
SG215
RF tetrode
2.0*
0.15
150
1.5
60
0.25
900.0
1.10
B4+tc
2
1929
SG410
RF tetrode
2.0*
0.10
160
2.0
80
200.0
0.90
B4+tc
2
1930
SGV16
VM RF tetrode
16.0
0.25
200
6.0
80
0.50
1.5
300.0
4.00
B5+tc
2
1933
SP2
RF pentode
2.0*
0.10
150
2.5
80
0.60
500.0
1.00
B7+tc
4
1934
SP2V
VM RF pentode
2.0*
0.10
150
3.0
80
0.80
0
500.0
1.10
B7+tc
4
1934

† Base connections are probably as for the AVC2 but with the cathode connected to the centre pin of the B5 base.

 

Rectifiers

Type
Class
Cathode
Va
DC Ia
PIV
DC Vo
Base
Year
 
 
Type
Volts
Amps
Max RMS
mA
Volts
Volts
Type
Ref
Year

 Lissen

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
U16
HW
IH
16.0
0.25
300
40
B5
8
1933
U625
HW
DH
6.0
0.25
B4
4
U650
HW
DH
6.0
0.50
300
40
B4
4
1930
UU41
FW
DH
4.0
1.00
300
80
B4
5
1930
UU42
FW
DH
4.0
2.50
350
120
B4
5
1934
UU43
FW
DH
4.0
2.50
500
120
B4
5
1934

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