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Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P.17C
Beam Tetrode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P08
Triode
1928

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P1
Triode (Bright Emitter)
1922
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P12/250
Triode
1936

4XP AC044 LP4 PP3/250 PX4 S30C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P122
Helium-Neon Laser Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P125
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P125A
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P2
Triode ( Cossor Bright Emitter)
1922
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P2
Output Triode (M-OV)
1930
B4
CV1246

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P2018
Triode
1934
B5
B2006 REN1822

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P2060
Pentode
1935
Ct8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P215
Triode
1930
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P220
Triode
1929
B4
AR5 CV3620

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P220A
Triode
1931
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P225
Pentode
1933
B5
p2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P227
Output Triode
1928

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P240
Triode
1929

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P27-500
Triode
1937
B4
CV1040 DO24 P27/500 PP5-400 PX25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P27/500
Triode
1937
B4
CV1040 DO24 P27-500 PP5-400 PX25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P3
Triode
1925
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P3580
Pentode
1936
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P4
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P41
Triode
1938

CV1408

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P410
Triode
1929
B4
CV3621

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P414
Triode
1929
B4
B405 RE114

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P415
Output Triode
1928
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P425
Output Triode
1926
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P425A
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P440N
Output Pentode
1932
B5
AC/Pen MP/Pen PT4 Pen4V

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P485
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P5283
Photomultiplier

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P535/1E
Pulse Tetrode
1946
B4A
715B CV398

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P552/1E
Pulse Tetrode
1946
B4A
5D21 CV427

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P57
Pentode

CV1466

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P6
Output Triode
1933
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P6
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P61
Triode
1941
MO
CV1066 VR66

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P610
Triode
1929
B4
CV3622 PM6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P612
Output Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P614
Triode

PM6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P615
Output Triode
1928
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P625
Triode
1928

CV1208

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P625A
Triode
1928

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P633
Triode Pentode
1957

ECL83

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P650
Triode
1929
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P788
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P807
Camera Tube (Image Orthicon)
1957
5820

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

P.A.1
Triode
1932
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PA.1
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PA1
Triode
1932

054V 41MXP ACP1 LL4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PA20
Triode
1936
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PA3
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PA40
Triode
1937
B4
CV3623

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PABC80
Triple Diode Triode
1952
B9A
9AK8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PC86
UHF Triode
1962
B9A
4CM4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PC88
Triode
1962
B9A
4DL4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PC900
Triode
1963
B7G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PC95
Triode
1962

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PC97
UHF Triode
1961
B7G
4FY5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC189
Double Triode
1960
B9A
7ES8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC805
Double Triode
1960

30L15

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC806
Double Triode
1961
B9A
30L17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC84
Double Triode
1953
B9A
30L1 7AN7 B319 CV5191

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC85
Double Triode
1953
B9A
9AQ8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC88
Double Triode
1957
B9A
7DJ8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCC89
Double Triode
1959
B9A
4021 7FC7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCE800
Triode Beam Tetrode

30FL1 9GB8 LN339

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCE82
Triode Beam Tetrode
1962

30FL12

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF200
Triode Pentode
1964
B10B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF80
Triode Pentode
1953
B9A
30C1 8A8 9A8 LZ319 LZ329

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF800
Triode Pentode
1959

30C15

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF801
Triode Pentode
1963
B9A
8GJ7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF802
Triode Pentode
1962
B9A
9JW8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF805
Triode Pentode
1962
B9A
30C18 7GV7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF806
Triode Pentode

B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF808
Triode Pentode

B9A
30FL14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF812
Triode Beam Tetrode
1970

30FL2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF82
Triode Pentode
1953
B9A
9EA8 9U8 9U8A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF84
Triode Pentode

B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF86
Triode Pentode
1960
B9A
8HG8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCF87
Triode Pentode
1960
B9A
30C17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCH200
Triode Heptode
1964
B10B
9V9

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL800
Triode Pentode
1960
B9A
16GK8 30PL13

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL801
Triode Pentode
1959
B9A
13GC8 30PL1 LN319

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL805
Triode Pentode
1968
B9A
PCL85

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL805/85
Triode Pentode
1968
B9A
PCL805 PCL85

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL82
Triode Pentode
1955
B9A
16A8 30PL12

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL83
Triode Pentode
1954
B9A
CV5144 LN309

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL84
Triode Pentode

B9A
15DQ8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL85
Triode Pentode
1961
B9A
18GV8 PCL805

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL86
Triode Pentode
1961
B9A
14GW8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PCL88
Triode Beam Tetrode
1960
B9A
30PL14 LN329

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PD220
Double Triode (Class B)
1933
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PD500
Triode
1966
B9D
9ED4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PE7B
Photocell
1929
B4
CV584 GS56

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PE8
Photocell

VS18MO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PER1
Triode
1926
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PET60
Voltage Stabiliser

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PF818
Pentode

30F5 30FS 7ED7 Z329

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PFL200
Double Pentode
1964
B10B
16Y9

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PJ23
Photocell
1945

3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PK150
Klystron

CV150

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL105
Thyratron
1954

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL300
Pentode
1968
IO
35FN5 CV10783

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL302
Pentode
1964

30P19 N389

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL33
Pentode

IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL36
Pentode
1955
IO
25E5 25F7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL38
Pentode
1948
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL500
Pentode
1961
B9D
27GB5 PL504

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL504
Pentode
1961
B9D
27GB5 PL500

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL508
Pentode
1967
B9D
17KW6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL509
Pentode
1969
B9D

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL519
Pentode
1970
B9D

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL522
Thyratron
1955

5C22 CV2520 XH16-200

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL801
Beam Tetrode

B9A
12FB5 30P12 N369

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL802
Pentode
1966
B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL802T
Solod State Replacement

B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL81
Pentode
1951
B9A
21A6 CV5077 N152 N359

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL81A
Pentode

B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL82
Pentode
1951
B9A
16A5 30P16 N154 N329

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL820
Pentode
1951

PL81

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL83
Pentode
1951
B9A
15A6 N153 N309

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PL84
Pentode
1956
B9A
15CW5 30P18 N379

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pliotron
Triode
1915

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PLL80
Double Pentode
1959

6HU8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM04
Pentode

6BA6 EF93 W727

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM05
Pentode

6AK5 DP61 EF95

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM07
Pentode

6AM6 8D3 EF91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM12
Tetrode
1927

215SG S215A S215 S21 SG215

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM12A
Tetrode
1932
B4
218SG 220SG S215B S22 S24

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM12M
Pentode
1933
B4
218VSG 220VS CV1041 S215VM VR41 VS24 VS2 W21/4 W21

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM12V
Tetrode
1932

215VSG 220VSG VS2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM14
Tetrode
1927
B4
CV1158 CV1159 NR22 NR23 S410

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM16
Tetrode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM1A
Triode
1927
B4
210RC H2 H210 SS210RC

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM1DG
Bi-Grid
1931
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM1HF
Triode
1926
B4
AR4 CV1303 HL210

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM1HL
Triode
1931
B4
210HL CV3641 HL210 HL2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM1LF
Triode
1926
B4
210LF CV3642 L210

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2
Triode
1926
B4
220P CV1019 NR28 P215 VR19

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2A
Triode
1930
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM202
Triode
1931
B4
220SP CV185 P220A P2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM22
Pentode
1928
B4
220PT 230HPT 230Pen CV3649 PT225 PT240 Pen220A Pen230

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM22A
Pentode
1931
B5
220HPT 220OT 220Pen CV3647 KT2 PT2 Pen220 PenB1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM22D
Pentode
1936
B5
CV3578

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24
Pentode
1928
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24A
Pentode
1929
B5
CV1167 NR43

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24B
Pentode
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24C
Pentode
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24D
Pentode
1931

CV1237

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24E
Pentode
1937

CV3648

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM24M
Pentode
1932
B5
CV1181 PT4 PenA1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM26
Output Pentode
1929

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM252
Triode
1927
B4
230XP 240SP P240 SS230SP SS240SP

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM254
Triode
1927
B4
CV1153 CV1154 NR16 NR16A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM256
Triode
1927

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM256A
Triode
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2A
Triode
1930
B4
220PA CV3643 LP2 P220

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2B
Double Triode
1933
B7
220B B230 CB215 HB2 K33A PD220

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2BA
Double Triode
1934

CV1163 NR35

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2DX
Triode
1928
B4
210D 210Det CV3645 L2/B L210 L2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM2HL
Triode
1938
B4
210HL CV1050 HL2K K30C K30D K30K VT50

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM3
Triode
1926
B4
CV1151 NR15

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM3A
Triode
1927

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM4
Triode
1925

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM4DX
Triode
1928
B4
410LF CV1151 CV1152 L410 NR15A NR16A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM5B
RCC Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM5D
Triode
1930
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM5X
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM6
Triode
1926
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM6D
Triode
1929
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PM84
Tuning Indicator

B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PN2
Output Pentode
1933

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Power2(Green Line)
Output Triode
1927

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Power4(Green Line)
Output Triode
1927

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Power6(Green Line)
Output Triode
1927

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP13A
Pentode

7D5 CV1425 N30

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP2
Pentode
1936
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP2018
Output Pentode
1932
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP215
Pentode
1938
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP222
Pentode
1935
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP225
Pentode
1936
B5
BL22

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP24
Pentode
1937
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP3/250
Triode
1932
B4
4XP AC044 CV1168 LP4 P12/250 PX4 S30C S30G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP35
Pentode
1935
B7
7D6 C70D Pen3520 Pen36C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP3521
Triode
1936
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP36
Pentode
1936

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP4
Pentode
1936
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP5/400
Pentode
1931
B4
DO24 P27-500 PX25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP60
Beam Tetrode
1939

CV1075 EL37 KT66 VT75

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP6E
Pentode
1937
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PP6F
Pentode
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PR3
Triode
1928
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PS-15
Triode

UV The Shaw Base

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT10
Pentode
1940
B7
AC5/Pen CV2809

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT11
Pentode

CV3654

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT15
Beam Tetrode

B5
CV1104 VT104

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT16
Pentode
1933
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT2
Pentode
1931
B5
220OT ARP1 KT2 PM22A Pen220 PenB1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT2/K
Pentode
1934
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT225
Pentode
1929
B4
PM22

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT240
Output Pentode
1929

D5062

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT25
Pentode
1933

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT25H
Pentode
1934

CV1046 VR46

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT2C
Pentode

B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT4
Pentode
1931
B5
42MP/Pen 7A3 A70C A70D AC/Z AC2/Pen APP4B CV1181 KT41 N41 Pen4VB PenA4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT41
Pentode
1932

PM24M PT4 PenA1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT41B
Pentode
1932

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT235
Pentode
1929

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT425
Pentode
1929

CV3656

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT4D
Double Diode Pentode
1934
B7
AC2/Pen/DD DDPP4B DN41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT5
Pentode

CV3652

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT5E
Pentode

CV3579

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT6
Pentode

ARP75 ATP75 CV1221 CV1371 CV3653 NT38 NT38A PZ1-75 PZ1/75 SW75Pen

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PT625
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PTA
Pentode
1934

75D CV1425 N30 PP13A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV05-15
Pentode

CV3657

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV1-35
Pentode

ATP35 CV1370 CV3658

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV100/2000
Rectifier FW
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV2
Triode
1926
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV25
Rectifier 2 x HW
1938
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV29
Rectifier 2 x HW
1938

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV30
Rectifier 2 x HW
1937
B7
CV3758 UR3C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV3018
Rectifier FW
1934

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV30S
Rectifier 2 x HW
1937

CY2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV4
Rectifier FW
1936

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV4018
Rectifier 2 x HW
1933

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV4100
Rectifier FW
1933

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV4200
Rectifier FW
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV4201
Rectifier FW
1934

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV475
Rectifier FW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV495
Rectifier FW
1929
B4
506 DW2X TV80 U10

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV5DE
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV75/1000
Rectifier FW
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PV8DE
Triode
1925
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PVA6
Rectifier FW
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PVB6
Rectifier FW
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PVC6
Rectifier FW
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX2
Output Triode
1932

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX25
Triode
1932
B4
CV1040 DO24 NR47 P27-500 PP5/400 PP6/400 VR40

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX25A
Triode
1935

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX4
Triode
1929
B4
4XP AC044 CV1168 LP4 NR44 P12/250 P460 PP3/250 S30C S30G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX5
Triode
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PX650
Output Triode
1928

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY301
Rectifier HW

IO
19CS4 CV5258 U191 U339

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY31
Rectifier HW
1954
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY32
Rectifier HW
1955
IO
PY33 U291

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY33
Rectifier HW
1961
IO
PY32 U291

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY500
Rectifier HW
1965

42EC4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY500A
Rectifier HW
1967
B9D
42EC4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY80
Rectifier HW
1950
B9A
19X3 U152 U309

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY800
Rectifier HW
1961
B9A
PY81

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY801
Rectifier HW

B9A
A61 U193 U349

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY81
Rectifier HW
1951
B9A
17Z3 PY800 U153 U329

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY82
Rectifier HW
1951
B9A
19Y3 U192

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY83
Rectifier HW
1951
B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PY88
Rectifier HW
1958
B9A
30AE3

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PZ1-35
Pentode

CV1240 NT65A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PZ1-75
Pentode

ARP75 CV1221 NT38A PT6 SW75Pen

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PZ1/75
Pentode

ATP75 CV1371 NT38 PT6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PZ30
Rectifier FW
1948
IO
R14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen1340
Pentode
1935
B7
7D6 7D8 ARP9 C70D CV889 CV1327 CV3635 PP35 Pen13C Pen36C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen1346
Pentode

CV3636

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen13C
Pentode

7D8 CV3635 Pen1340

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen141
Pentode
1939
MO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen20
Pentode
1932
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen220
Pentode
1931
B5
220HPT 220OT KT2 PM22A PP2 PT2 PenB1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen220A
Pentode
1931
B5
220PT CV1051 VT51

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen22D
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen231
Pentode
1936
B5
ARP18 CV1334 CV3633 KT21

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen24
Pentode
1938

Pen25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen25
Pentode
1938
MO
BVA162 CV65 Pen24

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen26
Pentode
1934
Ct8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen3520
Pentode
1934
B7
7D6 C70D PP35

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen36C
Pentode
1935
B7
7D6 C70D CV1672 PP35 Pen3520

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen3820
Pentode
1938

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen383
Pentode
1938
MO
CV1456

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4V
Output Pentode
1931
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen40DD
Double Diode Pentode
1939
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen40X
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen425
Pentode
1929

425Pen

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen428
Pentode

B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen42B
Pentode
1937

CV3634

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen44
Pentode
1939
MO
CV3630

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen45
Pentode
1938
MO
CV1407

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen453DD
Double Diode Pentode
1938
MO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen45DD
Double Diode Pentode
1938
MO
CV3631

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen46
Pentode
1940
MO
CV1127 V1111 VT127

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4B
Pentode

CV3626

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4BA
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4DD
Double Diode Pentode
1937
B7
CV519 DDPP4M

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4VA
Pentode
1933
B5
7A2 A70B AC/Pen APP4A CV1174 KT42 MKT4/7 MP/Pen N40 P4VA Pen/4VA

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Pen4VB
Pentode
1933

7A3 AC2/Pen Pen/4VB

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PenA1
Output Pentode
1932

PM24M

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PenA4
Pentode
1937
B7
4066A 420T 42MP/Pen 7A2 7A3 A70C A70D AC2/Pen APP4B ARP10 ARP25 CV1181 CV3638 KT41 N41 NR59 OP42 PT4 Pen4VB TL44

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PenB1
Output Pentode
1935

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PenB4
Pentode
1937
B7
A70E

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

PenDD4020
Double Diode Pentode
1935
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Photocell
Photocell

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - Det & LF
Triode
1927
B4
210LF 410LF 610LF

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - HF
Triode
1927
B4
210HF 410HF 610HF

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - HF & Det
Triode
1927
B4
210HL 410HL 610HL

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - LF
Triode
1927

210LF 410LF 610LF

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - Plain Top
Triode
1926

210HL 410HL 610HL

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - RC
Triode
1927
B4
210RC 410RC 610RC

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Point One - Red Top
Triode
1926

210HF 410HF 610HF

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