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Valve Types and Equivalents
    
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Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1007
Triode
 
 
CV1205
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1046
Micropup Triode
 
 
CV62 CV219
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1111
Tetrode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1148
Triode
 
IO
CV6 CV1135 CV2920 DET20 VR135 VT-232
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1155
Modulator Tetrode
 
 
CV44 CV1257
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1175
Triode
 
L4
VT25
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1190
 
 
 
CV55 CV155
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1191
Rectifier MV
 
 
CV12
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1192
Beam Tetrode
 
 
CV1501 TT11 VT501
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1198
 
 
 
CV68
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1199
Diode
 
 
CV1405
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1209
 
 
 
CV7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1228
 
 
 
CV2
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1229
 
 
 
CV4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E122ER
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E122FC
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1231
Triode
 
 
CV52
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1232
Micropup Triode
 
 
CV199 NT99 W2514
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1235
 
 
 
CV29
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1248
 
 
 
CV8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1255
 
 
 
CV40
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1256
 
 
 
CV42
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1265
 
 
 
CV114
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1266
 
 
 
CV15
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1267
 
 
 
CV41
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1271
 
 
 
CV57
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1273
Triode
 
 
CV58
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1278
 
 
 
CV23
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1289
Thyratron
 
 
CV1148 NGT8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E130L
Pentode
1959
IO
7534
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1320
Tuning Indicator
 
 
CV51 Y65
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1323
Triode
 
 
CV63 CV344
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1325
 
 
 
CV56
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1326
 
 
 
CV69
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1330
 
 
 
CV123
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1336
 
 
 
CV122
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1342
 
 
 
CV64
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1342
 
 
 
CV186
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1359
 
 
 
CV76
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1362
 
 
 
CV126
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1368
Triode
 
 
CV90 CV350
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1371
 
 
 
CV105
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1373
 
 
 
CV99
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E13F
Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1411
 
 
 
CV153
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1415
 
 
 
CV115
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1417
 
 
 
CV117
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1419
 
 
 
CV154
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1429
 
 
 
CV79
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1430
 
 
 
CV89
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1457
Triode
 
 
CV257
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1458
 
 
 
CV178
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1459
 
 
 
CV174
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1465
 
 
 
CV236
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1468
Noise Diode
 
 
CV172
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1474
 
 
 
CV78
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1481
 
 
 
CV192
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1485
Pentode
 
 
3A4 CV807 DL93
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1488
 
 
 
CV182
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1489
 
 
 
CV222
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1494
 
 
 
CV191
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1496
Triode
 
 
ACT24 CV240
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1497
 
 
 
CV215
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1516
 
 
 
CV221
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1531
 
 
 
CV214
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1599
Triode
 
 
CV273 DET22
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1606
Double Triode
 
IO
B65
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1624
Triode
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1733
Rectifier FW
 
B8B
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1750
Heptode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1795
Rectifier HW
 
B8B
U101
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E180CC
Double Triode
1954
B9A
5965 CV8431
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E180F
Pentode
1955
B9A
5A/170K 6688 CV3998 EF861
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1823
Pentode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E182CC
Double Triode
1958
B9A
CV5766
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E186F
Pentode
 
 
CV8667
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E188CC
SQ Double Triode
1959
B9A
CV5354
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1920
Rectifier HW
 
 
CV121
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1955
Thyratron
 
 
20A3 2D21 CV797 EN91
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1980
Triode Hexode
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1985
Rectifier HW
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1996
Triode (Power)
 
 
ACT25 CV436
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1C
Triode
 
 
4671
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1F
Pentode
 
 
4672 E2F
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E1T
Counter/Indicator
1954
CV5106
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2016
Pentode
 
 
6CQ6 9D6 CV1758 EF92
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2020
Beam Tetrode
 
 
KT36
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2139
Beam Tetrode
 
KT31
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2047
Vari-μ Pentode
 
B7G
W107
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2056
Pentode
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2157
Double Triode
 
 
12AT7 B152 CV455 ECC81
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2163
Double Triode
 
 
12AU7 B329 CV491 ECC82
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2164
Double Triode
 
 
12AX7 6L13 CV492 ECC83
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2174
Double Diode Triode
1946
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2185
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2192
Pentode
1937
IO
Z63
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2266
Pentode
 
 
CV2231
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2599
Triode
 
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2597
Triode Pentode
 
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2657
Rectifier EHT
 
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E280F
Wideband Pentode
1958
B9A
7722
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E282F
Wideband Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E283CC
Double Triode
1959
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E288CC
Double Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2908
Triode
 
 
CV2163 CV5326
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2986
Modulator Thyratron
1963
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E351
Tetrode
 
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E388
Rectifier HW
1937
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E2F
Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E3F
Pentode
 
 
E13F
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4103/B/4
Cathode-Ray Tube
1936
B9
401A CV320 CV950 NC1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4103/E/4
Cathode-Ray Tube
1936
B9
408A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E415
Triode
1927
B5
A4100 H4100 KL1/ACR REN804
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4205/B/7
Cathode-Ray Tube
 
B12B
701A CV1588 ECR30
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4412/B/9
Cathode-Ray Tube
 
 
CV1587 ECR35
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4504/B/16
Cathode-Ray Tube
 
 
CV1385
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E4N
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E55L
Pentode
1960
B9D
8233 CV5808
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E639/10
Magnetron
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E80CC
Double Triode
1957
B9A
CV5989
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E80CF
Triode Pentode
1958
B9A
7643
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E80F
Pentode
1951
B9A
CV2729
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E80L
Pentode
1952
B9A
6227
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E810F
Pentode
 
B9A
7788 CV5809
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E811CC
Double Triode
 
 
ECC81
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E812CC
Double Triode
 
 
ECC82
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E813CC
Double Triode
 
B9A
ECC83
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E81L
Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E82CC
Double Triode
 
 
ECC82
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E83CC
Double Triode
 
B9A
ECC83
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E83F
Pentode
1958
B9A
CV9933
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E84L
Pentode SQ EL84
 
 
CV2975
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E86C
UHF Triode
 
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E88C
Triode SQ EC88
 
B9A
5255 CV9155
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E88CC
Double Triode
1958
B9A
6922 CV10320 Cca
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E88CC/01
Double Triode
 
 
CV2493
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E90CC
Double Triode
1955
B7G
5920 CV5214
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E90F
Pentode
1957
 
7693
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E91AA
Double Diode
1960
B7G
5726 6097 6AL5W
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E91H
Heptode
1957
B7G
6687
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E92CC
Double Triode
1958
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
E99F
RF Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EA50
Diode
1939
B3G
2B35 6D1 CV375 CV1092 SD61
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EA52
UHF Diode
1950
CV5140
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EA53
UHF Diode
 
 
2-01C
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EA76
Diode
1953
6489 CV469
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EA961
Diode
1956
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAA91
Double Diode
1946
B7G
EB91
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAB1
Triple Diode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EABC80
Triple Diode Triode
1952
B9A
6AK8 6LD12 6T8 DH719
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAC91
Diode Triode
1947
B7G
CV137 CV1804 CV4059 M8097
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAF41
Diode Pentode
1947
 
6CT7 EAF42 WD150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAF42
Diode Pentode
1948
B8A
6CT7 CV3883 W150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAF81
Diode Pentode
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAF801
Diode Pentode
1963
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EAM86
Tuning Indicator
1960
B9A
6GX8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EB11
Double Diode
1938
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EB34
Double Diode
1941
IO
6H6GT ARDD5 CV1054 D63 OM3 VR54
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EB4
Double Diode
1936
IO
DD6DS MEB4 TEB4 VEB4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EB41
Double Diode
1948
B8A
CV3881
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EB91
Double Diode
1949
B7G
6AL5 6D2 CV140 D152 D77 DD6 EAA91 M8212
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC11
Double Diode Triode
1940
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC21
Double Diode Triode
 
 
CV347
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC3
Double Diode Triode
1938
Ct8
CV1428
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC33
Double Diode Triode
1938
IO
6R7G AR21 CV1055 DH147 NR48 OM4 VR55
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC41
Double Diode Triode
1948
B8A
62DDT 6CV7 6LD3 CV3882 DH150 DH718
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC80
Double Diode Triode
1954
B9A
6BD7 6BD7A 6LD13 EBC81
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC81
Double Diode Triode
1954
B9A
6BD7 6BD7A 6LD13 EBC80
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC90
Double Diode Triode
1953
B7G
6AT6 CV452 DH77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBC91
Double Diode Triode
 
B7G
6AV6 CV2526
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF11
Double Diode VM Pentode
1940
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF2
Double Diode Pentode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF32
Double Diode Pentode
 
 
CV501
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF80
Double Diode Pentode
1950
B9A
6N8 WD709 ZD152
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF83
Double Diode Pentode
1957
B9A
6DR8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBF89
Double Diode Pentode
1958
B9A
6DC8 6FD12
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBL1
Double Diode Pentode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBL21
Double Diode Pentode
1947
B8B
DN143
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EBL31
Double Diode Pentode
1940
IO
CV2926
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC157
Triode
1960
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC158
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC31
Triode
 
IO
CV1433
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC50
Triode
1953
Ct8
CV2927
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC52
Triode
1941
B9G
CV1137 RL16 VR137
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC53
Triode
1941
B3G
CV1197 NR88 RL18
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC54
Triode
1941
 
CV66 RL37
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC55
Triode
1947
5861 DET22 R243
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC56
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC57
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC70
Triode
1950
B8D & B8D/F
6K4 CV468
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC71
Triode
1957
B8D & B8D/F
5718 CV3930
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC80
Triode
 
 
CV1886
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC8010
Triode
1968
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC81
Triode
1950
B9A
6R4 CV1865
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC86
Triode
1958
B9A
6CM4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC88
Triode
1961
B9A
6DL4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC90
Triode
1964
 
6C4 CV133 L77 V741
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC903
Triode
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC91
Triode
 
B7G
6AQ4 6L34 CV417 M8099
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC92
Triode
1952
B7G
6AB4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC94
Triode
1954
 
6AF4 CV5036
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC97
Triode
1962
B7G
6FY5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EC98
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC189
Double Triode
1960
B9A
6ES8 CV5331
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC2000
Double Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC230
Double Triode
 
 
6080 CV2984
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC31
Double Triode
1942
IO
CV1285 NR73
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC32
Double Triode
 
IO
13D2 6SN7GT B65 CV181 VT-231
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC33
Double Triode
1949
IO
CV2821
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC34
Double Triode
1946
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC35
Double Triode
1942
IO
6SL7GT CV569 VT-229
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC40
Double Triode
1948
B8A
CV3884
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC70
Double Triode
1950
B8D & B8D/F
6021
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC804
Double Triode
 
B9A
6/30L2 6GA8 B729 CV5264
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC807
Double Triode
 
B9A
13D7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC808
Double Triode
1963
B9A
6KX8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC81
Double Triode
 
B9A
12AT7 B152 B309 CV455 E2157 E811CC
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC82
Double Triode
1951
B9A
12AU7 B329 CV491 E2163 E812CC
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC83
Double Triode
1954
B9A
12AX7 12DT7 6L13 B339 CV492 E2164 E813CC
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC83A
Double Triode
2000
B9A
ECC83
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC83S
Double Triode
 
B9A
7025 ECC83
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC84
Double Triode
 
B9A
6CW7 6L16 CV5281
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC85
Double Triode
1954
B9A
6AQ8 6L12 B719
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC86
Double Triode
1959
B9A
6GM8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC88
Double Triode
1958
B9A
6DJ8 CV5358 M3624
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECC91
Double Triode
1956
B7G
6J6 CV858
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF80
Triode Pentode
1954
B9A
6BL8 6C16 CV5215
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF804
Triode Pentode
 
B9A
18D3 CV5948
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF805
Triode Pentode
 
B9A
6C18 6GV7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF812
Triode Beam Tetrode
 
 
6FL2
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF82
Triode Pentode
1953
B9A
6U8 CV5065
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECF86
Triode Pentode
 
B9A
6HG8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH11
Triode Hexode
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH2
Triode Hexode
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH21
Triode Heptode
1941
B8B
X143
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH22
Triode Heptode
 
 
CV302
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH3
Triode Hexode
1939
Ct8
CV2929
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH33
Triode Hexode
1939
IO
6C31 CV2930
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH35
Triode Hexode
1940
IO
ARTH2 BVA276 CV1347 CV1944 OM10 X147 X61M X65
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH42
Triode Hexode
1949
B8A
62-TH 6C10 6CU7 CV3888 X150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH81
Triode Heptode
1953
B9A
6AJ8 6C12 CV2128 X719
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH83
Triode Heptode
1957
B9A
6DS8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECH84
Triode Heptode
1961
B9A
6JX8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL11
Triode Pentode
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL80
Triode Pentode
1950
B9A
63TP 6AB8 LN152
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL82
Triode Pentode
1956
B9A
6BM8 6PL12
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL83
Triode Pentode
1957
B9A
P633
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL84
Triode Pentode
1958
B9A
6DX8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL85
Triode Pentode
1961
B9A
6GV8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECL86
Triode Pentode
1961
B9A
6GW8 CV8297
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECLL800
Triode Double Pentode
1963
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR30
Cathode-Ray Tube
1943
B12B
CV1588 E4205/B/7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR35
Cathode-Ray Tube
 
 
901A CV1587 E4412/B/9
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR35P
Cathode-Ray Tube
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR57
Cathode-Ray Tube
 
 
CV1587
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR60
Cathode-Ray Tube
1943
 
CV1097 VCR97
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ECR75
Cathode-Ray Tube
 
 
4C35 CV1787
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ED500
Triode
1966
B9D
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EDD11
Double triode
1938
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
Edison Effect
Diode
1885
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EE-68C
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EE50
Secondary Emission Pentode
1938
B9G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EE60
Secondary Emission Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EE80
Pentode
 
 
6F28
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF11
Pentode
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF12
Pentode
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF13
Pentode
1938
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF14
Pentode
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF183
Pentode
1959
B9A
6EH7 6F29 CV5831
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF184
Pentode
1960
B9A
6EJ7 6F30 CV5810
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF190
Pentode
1961
 
6CB6A 6CF6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF22
Pentode
 
B8B
7B7 CV303 W143
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF36
Pentode
1940
IO
CV1056 CV1404 NR49 OM5 VR56
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF37
Pentode
1942
IO
OM5A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF37A
Pentode
1942
IO
5A/157D CV358 CV5080 OM5B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF39
Pentode
1939
IO
ARP31 ARP34 BVA246 CV1053 CV1464 CV5110 OM6 VR53 W147
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF40
Pentode
1948
B8A
CV3885
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF41
Pentode
1947
B8A
62-VP 6CJ5 6F16 7F16 CV3886 W150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF42
Pentode
1947
B8A
CV3887 Z150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF5
Pentode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF50
Pentode
1939
B9G
63SPT ARP35 CV1091 CV1578 POVT207 VR91 VT-250 Z90
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF51
Pentode
1942
 
CV305
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF52
Pentode
 
 
CV327
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF54
Pentode
1947
B9G
CV380 CV1136 VR136
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF55
Pentode
1946
B9G
CV173
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF6
Pentode
1938
Ct8
MEF6 TEF6 VEF6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF7
Pentode
1936
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF70
Pentode
1950
B8D & B8D/F
CV467
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF71
Pentode
 
B8D & B8D/F
CV475
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF72
Pentode
1950
B8D & B8D/F
CV465
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF73
Pentode
1950
B8D & B8D/F
CV466
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF730
Pentode
 
5636 CV3928
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF731
Pentode
1958
B8D & B8D/F
5899 CV477
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF732
Pentode
1957
B8D & B8D/F
5840 CV3929
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF734
Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF74
Pentode
 
 
CV472 CV476
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF75
Pentode
 
B8D & B8D/F
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF8
Pentode
1938
Ct8
CV1123 VR123
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF80
Pentode
1950
B9A
64SPT 6BX6 8D6 CV1376 Z152 Z719
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF80A
Pentode
 
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF804
Pentode
1951
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF812
Pentode
1959
 
6F23
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF83
Pentode
1956
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF85
Pentode
1951
B9A
6BY7 6F19 6F26 CV1375 W719
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF86
Pentode
1953
B9A
6267 6BK8 6F22 CV2901 Z729
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF89
Pentode
1955
B9A
6DA6 CV5156
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF9
Pentode
1938
Ct8
CV1427
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF91
Pentode
1947
B7G
5A/160H 5A/160K 6AM6 6F12 8D3 CV138 HP6 SP6 Z77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF92
Pentode
 
B7G
6CQ6 6F21 9D6 CV131 E2016 V884 VP6 W77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF93
Pentode
1951
B7G
6BA6 6K4P CV454 PM04 W727
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF94
Pentode
 
B7G
6AU6 CV2524
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF95
Pentode
1951
B7G
6AK5 6DL5 CV850 DP61 PM05
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF96
Pentode
 
 
6AG5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF97
Pentode
1959
B7G
6ES6 6K8P
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EF98
Pentode
1957
B7G
6ET6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EFF51
Double Pentode
1941
B9G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EFM1
Pentode Tuning Indicator
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EFM11
Pentode Tuning Indicator
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EFP60
Secondary Emission Pentode
1947
B9G
CV5108
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EH2
Heptode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EH90
Heptode
1954
B7G
6CS6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EHA5000
Triode
 
 
889R
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EHT1
 
 
CV19
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EHW5000
Triode
 
 
889
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EI834
Double Triode
1946
 
6AS7G CV2523
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EK2
Octode
1938
Ct8
CV1426
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EK3
Octode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EK32
Octode
1940
IO
CV1057 CV1570 OM8 VR57
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EK90
Heptode
1951
B7G
6BE6 CV453 HM04 X727 X77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL11
Pentode
1938
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL1C
Rectiifier FW
1953
 
3B22 CV3815
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL12Spec
Pentode
1940
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL13
Pentode
1949
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL131
Pentode
1955
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL2
Pentode
1938
Ct8
CV1429
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL22
Pentode
 
B8B
CV304
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL3
Pentode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL300
Pentode
1960
 
6FN5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL31
Pentode
1948
IO
CV2888
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL32
Pentode
1940
IO
CV1052 OM9 POVT181 VT52
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL33
Pentode
1938
IO
6AG6G 6M6G BVA266 CV2938 KT61 N147 PP6BG
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL34
Pentode
1954
IO
6CA7 CV1741 KT77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL35
Pentode
1945
IO
6L6G CV1286 NR77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL36
Pentode Line Output
1954
IO
6P31S
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL36 
Pentode Audio Output
1940
 
CV2940
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL360
Pentode
1958
IO
11E14 CV5830
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL37
Pentode
1946
IO
6L6G CV586 CV1947 KT66 PP60 VT75
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL38
Pentode
1946
IO
6CN6 CV450
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL38R
Beam Tetrode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL41
Pentode
1947
B8A
67PT 6CK5 CV3889 N150
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL42
Pentode
1947
B8A
BF62 CV3890 N151
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL5
Pentode
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL50
Pentode
1939
Ct8
CV2941
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL503
Beam Tetrode
1965
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL505
Beam Tetrode
 
B9D
6KG6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL506
Pentode
1966
B9D
7868
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL508
Pentode
1967
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL509
Penode
 
B9D
6KG6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL54
Pentode
 
 
4699
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL6
Pentode
1938
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL70
Pentode
 
 
CV471
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL71
Pentode
 
B8D & B8D/F
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL81
Pentode
 
B9A
6CJ6 CV2721
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL820
Pentode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL821
Pentode
 
B9A
6CH6 7D10 CV2127
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL822
Pentode
1964
B9A
21VO6 CV2382
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL83
Pentode
1953
B9A
6CK6 CV2726
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL84
Pentode
1953
B9A
6BQ5 6P15 CV2975 N709
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL85
Pentode
1954
B9A
6BN5 CV3526 N155
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL86
Pentode
1956
B9A
6CW5 CV5094
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL89
Pentode
1955
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL90
Pentode
 
B7G
6AQ5 BPM04 CV1862 N727
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL91
Pentode
1949
B7G
16A 6AM5 6P17 7D9 CV136 N144 N77 V887
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL95
Pentode
1955
B7G
6DL5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL98
Pentode
 
 
CV136
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ELL80
Double Pentode
1959
B9A
6HU8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EL-CIK/B
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ELY-18A202B
Camera Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ELY-18A202D
Camera Tube
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ELY-18A208D
Camera Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ELY07V552A
Cathode-Ray Tube
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM1
Tuning Indicator
1937
Ct8
CV2942
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM11
Tuning Indicator
1939
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM3
Tuning Indicator
1939
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM31
Tuning Indicator
1941
 
AW6 CV1077 VI77
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM34
Tuning Indicator
1946
IO
64ME 6CD7 6M2 CV394
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM4
Tuning Indicator
1939
Ct8
CV1434
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM71
Tuning Indicator
1949
B8B
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM80
Tuning Indicator
1954
B9A
65ME 6BR5 CV1352
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM81
Tuning Indicator
1956
B9A
6DA5 CV5055
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM83
Double Tuning Indicator
1958
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM84
Tuning Indicator
1959
B9A
6E3P 6FG6 CV5434
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM840
Tuning Indicator
1957
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM85
Tuning Indicator
1955
B9A
6DU6
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM85E
Tuning Indicator
1959
B9A
EM84
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EM87
Tuning Indicator
1961
B9A
6E2
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EMM801
Double Tuning Indicator
1957
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EMM803
Double Tuning Indicator
1963
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN10
Strobe Tube
1961
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN30
Thyratron
 
 
CV2349
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN31
Thyratron
1947
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN32
Thyratron
 
IO
6574 CV2253
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN70
Thyratron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN71
Thyratron
 
 
CV474
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN91
Thyratron
1952
B7G
20A3 2D21 4G/280K CV797 E1955
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN92
Thyratron
 
 
5696 CV3512
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EN93
Thyratron
 
 
6D4 C437 CV1949
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EPF80
Secondary Emission Pentode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EQ80
Nonode
1950
B9A
6BE7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ER21A
Thyratron
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ER227
Triode
 
UX5
227 27
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ES1001
Triode
1957
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ES204A
 
 
 
204A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ES75
Triode
1935
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ES833
Triode
1938
 
833
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ES85
Triode
 
 
211 242C 4242A CV25 UE311
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESA2500
Triode
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESA892
 
 
 
892R
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU101
Rectifier HW
 
 
2V/301A 2V/301B CV1072 CV1626 GU50 RG1-240A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU103
Rectifier HW
1952
 
2G/402A 3B28 GXU1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU112
Rectifier HW
 
 
2S/460A CV8265
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU115
Rectifier HW
 
 
2V/302B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU150
Rectifier MV
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU200
Rectifier HW
 
 
AH221 CV5 GU21 RG4-1250
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU300
Rectifier HW
 
 
4049 CV1355
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU400
Rectifier HW
 
 
575A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU74
Rectifier HW
 
 
CV74
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU75
Rectifier MV
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU76
Rectifier MV
 
 
2V/395C CV2946
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU77
Rectifier HW
 
 
2S/460C A207 CV2160
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU866
Rectifier HW
1952
 
2V/400A 3B28 866A AH201 CV32 GU12 RG3-250A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU866ES
Rectifier HW
 
 
2V/400C
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESU872
Rectifier MV
 
 
4064B 872 872A AH217 CV642
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESW204
Triode
1936
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESW207
Triode
 
 
207
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ESW501
Triode
1936
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ET1
Electrometer Triode
1939
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
ET51
Beam-X Tube
 
 
CV5277
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
Experimental
 
1917
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY500
Rectifier HW
1967
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY500A
Rectifier HW
1968
B9D
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY51
Rectifier HW
1948
6X2 CV426 R12 SU61 U151 U43
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY70
Rectifier HW
 
B8D & B8D/F
CV473
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY81
Rectifier HW
 
 
6R3
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY83
Rectifier HW
1946
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY84
Rectifier HW
 
B9A
CV2235 M8091 R18
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY86
Rectifier HW
1956
B9A
6S2 CV2966
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY86/87
Rectifier HW
1956
B9A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY87
Rectifier HW
1956
B9A
6S2A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY88
Rectifier HW
1959
B9A
6AL3
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EY91
Rectifier HW
1948
 
CV135
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ1
Rectifier FW
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ11
Rectifier FW
1938
Footless
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ2
Rectifier FW
1937
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ22
Rectifier FW
1941
 
7Z4 CV346
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ3
Rectifier FW
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ35
Rectifier FW
1946
IO
6X5GT CV574 U147 U70
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ4
Rectifier FW
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ40
Rectifier FW
 
B8A
66KU 6BT4 CV3891 U150 U718 UU9
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ41
Rectifier FW
 
B8A
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ80
Rectifier FW
1954
B9A
6V4 CV1535
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ81
Rectifier FW
1954
B9A
6CA4 CV5072 U709 UU12
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
EZ90
Rectifier FW
 
B7G
6X4 CV493 U78
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