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Valve Types and Equivalents

    
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Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K23B
Double Diode Triode
1935
B5
TDD2A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K250
Rectifier HW
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K300
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K3003
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K3007
Klystron
 
 
CV9423
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K301
Klystron
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K302
Klystron
1954
IO
CV2164 CV323
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K305
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K308
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K3020
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K3020A
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K30K
Triode
1937
B4
PM2HL
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K311
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K312
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K313
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K315
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K317
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K324
Klystron
 
CV2304
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K328
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K335
Klystron
 
 
CV2343
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K337
Klystron
 
 
CV4515
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K33A
Triode
1935
B7
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K342
Klystron
 
 
CV6003
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K343
Klystron
1958
 
CV10013 CV6003
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K346
Klystron
1958
 
CV6003
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K350
Klystron
 
 
CV5426
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K351
Klystron
 
 
CV2494
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K353
Klystron
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K3560
Triode
1933
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K357
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K359
Klystron
 
 
CV5985
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K361
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K361B
Klystron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K366
Klystron
1963
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K367
Klystron
1963
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K391
Klystron
 
 
CV6194
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K391A
Klystron
 
 
CV6142
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K4
Bi-Grid
1924
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K50N
Hexode
1937
B4
PM12M
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K70B
Pentode
1931
B5
PM22A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K77A
Double Output Pentode
1935
B9
QP22A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K90B
 
 
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
K9373B
Camera Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KBC32
Double Diode Triode
1946
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KCF30
Triode Pentode
1946
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KD21
Voltage Stabiliser
 
 
0A3 CV3789 G75/2D QS75/40 VR75/30
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KD24
Voltage Stabiliser
1939
 
0C3 CU686 G105/1D QS1206 VR105/30
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KD60
Voltage Stabiliser
1956
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KD61
Voltage Stabiliser
1956
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KD63
Voltage Stabiliser
 
 
CV5107
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KF35
Pentode
1946
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KK2
Octode
1935
 
BMO61 CV3516 TKK2 VKK2
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KK32
Octode
1946
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KL1
Triode
1927
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KL35
Pentode
1946
IO
1F5G
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KLL32
Double Pentode
1946
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR3
 
 
 
CV158
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR33-31
Neon Lamp
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR4
 
 
 
CV180
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR6/1
Velocity Modulated Valve
 
 
CV116
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR6/2
Velocity Modulated Valve
 
 
CV237
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KR6/3
Velocity Modulated Valve
 
 
CV238
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KRN2
Velocity Modulated Valve (Klystron)
1954
 
CV87 CV323
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KRN2A
Klystron
 
 
CV129 CV223 CV224
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KRN3
Klystron
 
 
CV130
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS
Diode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-20
Klystron
1944
IO
723A/B CV1795
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-20D
Klystron
 
IO
2K25 723A/B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-30
Klystron
1960
 
6975 VA203B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-40
Klystron
1960
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-40D
Klystron
1960
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KS9-40G
Klystron
1960
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT101
Beam Tetrode
 
B8B
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT2
Beam Tetrode
1937
B5
220HPT 220OT ARP1 CV1118 NR39 PM22A PP2 PT2 Pen220 PenB1 VR118
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT21
Pentode
1937
B5
PM22D Pen231
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT24
Pentode
1939
B5
ARP18 BY3 CV1334 PB2 PP220 PT240 VT51
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT30
Beam Tetrode
1937
 
CV3519
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT31
Beam Tetrode
1937
 
CV3520
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT32
Beam Tetrode
1937
IO
25L6G CV1287 CV1502 NR95 VR502
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT33
Beam Tetrode
1937
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT33C
Beam Tetrode
1939
IO
CV1503 VR503
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT35
Beam Tetrode
1940
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT36
Beam Tetrode
1948
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT41
Beam Tetrode
1937
B7
4066A 420T 42MP/Pen 7A2 7A3 A70C A70D AC/Z AC2/Pen APP4B ARP25 CV1181 N41 NR59 OP42 PT4 Pen4VB PenA4 TL44
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT42
Beam Tetrode
1937
B7
7A2 A70B AC/Pen APP4A CV1174 MKT4/5 MKT4/7 MP/Pen N40 P4VA Pen4VA
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT44
Beam Tetrode
1939
B7
11E3 ARP26 CV1340 CV1437 CV1576 CV1577 CV73 VT75A VT75B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT44T
Beam Tetrode
1939
 
VT75A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT45
Beam Tetrode
1947
B7
CV1825
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT55
Beam Tetrode
1955
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT61
Beam Tetrode
1939
IO
6AG6 6P25 CV1438 CV2938 EL33 N147 OM9
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT63
Beam Tetrode
1937
IO
6F6G ARP17 CV1186 CV1911 NR85
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT66
Beam Tetrode
1937
IO
6L6G CV1075 EL37 PP60 VT75
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT67
Beam Tetrode
 
 
CV437
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT71
Beam Tetrode
 
IO
50L6G
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT74
Beam Tetrode
 
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT76
Beam Tetrode
1948
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT77
Beam Tetrode
 
 
EL34
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT8
Beam Tetrode
 
 
CV1079
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT81
Beam Tetrode
1947
B8B
7C5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT88
Beam Tetrode
1956
IO
12E13 6550 7D11 CV5220
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KT8C
Beam Tetrode
 
B5
VT79
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTW61
Beam Tetrode
1939
IO
POVT193 W61
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTW62
Tetrode
1939
IO
CV1100 VR100
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTW63
Pentode
1938
IO
6K7G ARP15 CV1195 CV1941 NR81 NR86 W63
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTW73M
Tetrode
1937
 
CV3527
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTW74M
Beam Tetrode
 
 
12K7GT CV918 W76
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTZ41
Tetrode
1938
 
CV1191 CV1698 CV3529 NR76
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTZ63
Pentode
1937
IO
6J7G 6S7 ARP16 CV1074 NR83 VT74 Z63
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KTZ73
Pentode
1937
IO
ARP38 CV1343 CV3530
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KY50
Rectifier EHT
 
2L2 U25 U47
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
KY80
Rectifier EHT
 
B9A
2J2 R20 U26 U49
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