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Valve Types and Equivalents

    
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Type
Structure
Date
Base
PDF
Sensibly equivalent to:
40
Triode
 
UX4
CV2501
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
401
Triode
1925
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4011A
Triode
 
 
CV1415
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4017B
Rectifier HW
 
 
CV1446
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4019B
Double Triode
 
 
AR11 CV1309
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
401A
Cathode-Ray Tube
1936
B9
E4103/B/4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
401D
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
402PenA
Pentode
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4020
Triode
 
 
AR12 CV1310
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4021B
Triode
 
 
AR20 CV1316
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4022AR
Triode
1925
AR13 CV1311
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4030D
Triode
1938
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4033A
Triode
 
B5
3B/102B CV84 CV1220 NT37
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4033L
Triode
 
 
3033A 3B/252B 3B/303A 4033A CV1220 CV1688
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4039A
Triode Thyratron
1937
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4043C
Triode
 
 
3B/350A CV1448
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4046A
Pentode
 
 
CV244 MS/Pen
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4049
Rectifier HW
 
 
CV1355 ESU300
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4049A
Rectifier HW
 
 
CV1471
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4049D
Rectifier (MV)
 
 
AH221
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4052A
Pentode
 
 
CV1081
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
405BU
Rectifier FW
1937
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4061A
Pentode
 
 
5B/100A ATP10 CV1369 RK25
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4064B
Rectifier HW
 
 
872 872A AH217 CV642 CV1449 ESU872
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4066A
Pentode
 
 
7A3 ARP25 CV1181 KT41 NR59 PenA4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4067
Pentode
1957
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4069A
Pentode
 
 
ATP100 CV1372
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4074A
Double Triode
 
UX7
2C34 CV18 CV1061 DET19 RK34 TV03-10 VT-224 VT61 VT61
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4074B
Double Triode
 
 
CV1573 VT61A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
408A
Cathode-Ray Tube
1936
 
E4103/E/4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
408BU
Rectifier FW
1930
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
40CB4
Cathode-Ray Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
40PPA
Pentode
1934
 
7D3
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
40SUA
Rectifier HW
1934
B5
1D5 C108 CV1267 RZ U4020 UR1C V20
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41
Pentode
1936
UX6
CV608
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4101D
Triode
1925
UV
CV1638 POVT31 SY4101D
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4101DS
Triode
 
UV
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4102D
Triode
1925
UV
POVT32
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4104E
Triode
 
UV
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
410LF
Triode
1927
 
CV1152 L410 NR15A PM4DX
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
410LFT
Triode
 
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
410PT
Pentode
1932
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
410RC
Triode
1927
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4120
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
412BU
Rectifier FW
1929
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
412SU
Rectifier HW
1930
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4152
Thermal Delay Switch
1954
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
417A
Klystron
 
IO
2K41 CV2642 VT-277 WL-417A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
417A/5842
Triode
 
 
5842 CV3789
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41FP
Triode
 
 
CV2502 CV2509
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MDG
Bi-Grid
1932
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41ME
Tuning Indicator
1938
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MH
Triode
1930
B5
CV2503
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MHL
Triode
1930
B5
354V A30D AC/HL CV2504 D4 HLA2 MH4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MLF
Triode
1929
 
CV1038 MHL4 NR26 VR38
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MLT
Triode
 
 
CV1117 VR117
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MP
Triode
1929
B5
CV1458
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MPG
Heptode
1934
 
15A2 A80A CV2505 CV3576 FC4 MH4105 MX40 V04 VHT4 X42
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MPT
Pentode
1937
 
CV2506
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MTA
Triode
1937
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MTB
Triode
1937
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MTL
Triode
1937
B5
904V AC2/HL CV1117 HLA2 MH41 VR117
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41MXP
Pentode
1929
 
054V 41MXP ACP1 CV1122 LL4 PA1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
41STH
Triode Hexode
1936
B7
20A1 A36A AC/TH1 CV2508 TH4 X41M
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42
Pentode
1936
UX6
CV609
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4205E
Triode
1937
 
3B/151A CV1648 M4205E
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
420TDD
Double Diode Pentode
 
 
CV2512
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4212D
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4212E
Triode
 
3C/270A CV1252 CV1619 NT92
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4215A
Triode
1923
Peanut
H125 Wecovalve
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4242A
Triode
1938
211 242C CV25 ES85 UE311
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
425Pen
Pentode
1929
B4
Pen425
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
426
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4261
Thyratron (Mercury Vapour)
 
 
5557
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4270A
 
 
 
CV30
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4274A
Rectifier FW
 
 
22S/200A 274A CV1451
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4279A
 
 
 
279A CV669
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4282
Beam Tetrode
 
 
CV1365
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4282B
Beam Tetrode
 
 
ATS70
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42E
Pentode
1934
UX6
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42MP/Pen
Pentode
1934
 
7A3 A70C AC2/Pen CV1181 KT41 N41 PT4 PenA4 TL44
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42MPT
Pentode
1937
 
ARP7 CV1325
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42OT
Tetrode
1937
B7
CV2511
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42PAY
Pentode
 
 
CV2513
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42PTB
 
1937
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
42SPT
Pentode
1937
B7
CV1444
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
43
Pentode
1932
UX6
A2543 CV2514 ER43
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4300A
Triode
 
 
300A 300B 3B/170A 3B/400A 4275A CV1452
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4304
Triode
 
 
CV2759
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4304BB
Triode
 
B4
CV2761
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4304CB
Triode
 
B4
8019 BW11 CV315 CV1062 CV1252 CV1288 CV1619 DET12 NT58 TSW50/A TY1-50 VT62
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4307A
Pentode
 
 
CV1080
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4313C
Thyratron
 
B4
313C 3313C CV75 G150/1A PTT3003
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4316A
Triode
 
 
CV2762
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4317
Voltage Stabiliser
 
 
CV1201
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4357A
 
 
 
CV27
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
436A
Pentode
 
 
A2674
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
43E
Output Pentode
 
 
CV2514
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
43IU
Rectifier FW
1937
B4
1561 1821 1867 1867 441U 442BU 460BU 506BU A11B A11C A11D APV4 APV4 CV1039 CV3760 DW2 DW4-350 DW4-500 IW4-350 IW4-500 MU12 MU14 R1 R2 R3 R42 R4A U10 U12 U14 UU120/350 UU120/500 UU60/250
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
43U
Rectifier FW
 
 
CV1039 UU5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4415
Camera Tube (Image Orthicon)
 
 
P875
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4416
Camera Tube (Image Orthicon)
 
 
P891
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
442BU
Rectifier FW
1931
B4
CV1796 UU5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
446A
Triode
 
IO
CV932 GL446A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
446B
Triode
 
 
2C40 CV687
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4478
Camera Tube (Videcon)
 
 
P826/4478
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4493
Camera Tube (Videcon)
 
 
P893/4493
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4494
Camera Tube (Videcon)
 
 
P894/4494
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4495
Camera Tube (Videcon)
 
 
P894/4495
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
44A/160M
Double Beam Tetrode
 
 
CV415 TT15
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
44-IU
Rectifier FW
1937
 
CV1039 UU5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
44-SU
Rectifier HW
1930
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45-IU
Rectifier FW
1939
B4
CV2529 FW4-500
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45
Triode
1929
UX4
CV610 UX245
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
451
 
 
 
CV3585
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
451PT
Pentode
1947
 
45A5 N142 UL41
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45A5
Pentode
1947
 
451PT CV1977 N142 UL41
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45B5
Pentode
 
 
10P18 N119 UL84
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45IU
Rectifier FW
1939
 
AU1 CV1264 CV2529 FW4-500 NU12 U18/20
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45Z3
Rectifier HW
1940
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
45Z5GT
Rectifier HW
 
 
CV2530
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
46
Dual Grid Amplifier
1933
UX5
CV2531
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
460BU
Rectifier FW
1931
 
UU5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4643
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
464A
Triode
 
 
2C43 CV688
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4662
Tuning Indicator
1934
 
3184
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4671
Triode
 
 
1650+D2805 5731 955 E1C
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4672
Pentode
 
 
954 E1F ZA2
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4674
Diode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4675
Triode
 
 
A40 AT4 Z1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4676
Pentode
 
 
A41 AP4 Z2+D2676 ZA1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4685
Tetrode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4687
Tetrode
1937
Ct8
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4687A
Tetrode
1937
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
4699
Pentode
 
 
EL54
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
47
Pentode
1936
UX5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
48
Tetrode
1936
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
484LFU398
Rectifier
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
484V
Triode
1931
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
485
Triode
1940
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
49
Tetrode
1935
UX5
CV2532
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