Menu

List of Valves by Designation with Equivalent Types

S11E12

1959

IO	1	2	3	4	5	6	7	8
	ic	h	a	g2	g1	bp	h	k

 
Beam Tetrode

Beam Tetrode	Vh	Ah	Va	Vs
	6.3	1.6	800	300

 
CV4060 L.5B/280K 7971 CV8077

S12

1938

Pentode

S130

B4	1	2	3	4
	a	k	-	-

 
Voltage Stabiliser

Stabiliser	Va	mAa
	120	75

 
AW3 CV1110 CV1582 VS110

S130A

Voltage Stabiliser

CV3694

S130P

B4	1	2	3	4
	a	k	-	pa

 
Voltage Stabiliser

Stabiliser	Va	mAa
	120	75

 
CV0045 GTR120A

S19G6

B7G	1	2	3	4	5	6	7	tc
	ic	k	h	h	ic	ic	ic	a

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	4.0	0.5	2000	30

 
CV4057 L.2S/280K

S19G6F

Rectifier HW

CV4042 L.2S/280F

S2

1932

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.15	120	60	-1	2.25	0.3	0.3M	1.1

 
 

S215

1929

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.15	150	60	0	2.0	0.3	1.3M	1.1

 
CV3695

S215A

1931

Tetrode

S215B

1931

Tetrode

S215VM

1932

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.2	150	80	0	2.6	-	110,000	1.6

 
220VSG CV1028 VR28

S217

1935

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	μ
	2.0	0.18	150	150	-0.5	3.0	1	1.7	900

 
 

S23

1933

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.1	150	70	-0	2.8	0.7	0.3M	1.1

 
CV3691 CV3692

S24

1933

Tetrode

S2P20

Pentode

L.5A/220K 7973 CV4097

S2P21

Pentode

L.5A/221K

S410

1929

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	0.075	150	75	-	-	-	0.23M	0.87	200

 
CV1159 NR23 PM14

S4143P

Camera Tube

S4145B

Camera Tube

S4161P

Camera Tube

S4250

Camera Tube

S435N

1933

B5	1	2	3	4	5	tc
	g2	g1	h	h	k,g3	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	1.0	200	100	-2	-	-	-	3.5	5,000

 
 

S4V

1929

B4	1	2	3	4	tc
	g2	g1	h	h	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	1.0	200	100	-2	3.0	1.1	2.2M	2.3

 
 

S4VA

1930

B5	1	2	3	4	5	tc
	g2	g1	h	h	k	a

 
Pentode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	1.0	200	80	-1	3.4	1.2	0.5M	2.0	1,000

 
MS4B

S4VB

1930

B5	1	2	3	4	5	tc
	g2	g1	h	h	k	a

 
Pentode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	1.0	200	110	-1.5	4.6	1.2	0.3M	2.5	750

 
CV1677

S.609C-59M

Camera Tube

S610

1929

Tetrode

CV3698

S625

1927

Tetrode

Tetrode	Vh	Ah	Va	mAa
	6.0	0.25	180	2.6

 
 

S6F12

Pentode

S6F17

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	bp	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	6.3	0.3	200	200	-11	17	3	4

 
CV4040 L.5A/210K

S6F17F

Pentode

CV4041 L.5A/210F L.5A/210G

S6F33

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g3,a(d)	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	6.3	0.35	300	300	-	-	-	4.0

 
CV4064 CV8079 L.5A/201K M8196

SC1/600

1956

Corona Voltage Stabiliser

SC2/3000

Corona Voltage Stabiliser

Stabiliser	Va
	3,000

 
CV5844

Scope Tube

Ct8	1	2	3	4	5	6	7	8	tc
	a2	h	h	g1	X2	X1	Y2	Y1	a3

 
Cathode-Ray Tube

CRT	Vh	Ah	Va	Vg
	6.3	0.3	800	-12

 
 

SD

Diode

SD20

1934

B7	1	2	3	4	5	6	7	tc
	-	g1	g2	h	h	k,m	a(d)	a

 
Diode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	20	0.18	200	100	-1.5	5.0	-	120k	2.8

 
 

SD4

1933

B7	1	2	3	4	5	6	7	tc
	-	g1	g2	h	h	k	a(d)	a

 
Diode Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	gm
	4.0	1.0	200	100	0	3.0

 
 

SD6

B7G	1	2	3	4	5	6	7
	ic	a	h	h	k	s	ic

 
Diode

Diode	Vh	Ah	Va	mAa
	6.3	0.15	150	10.0

 
CV1989

SD6/12/10

Rectifier HW

Rectifier	Vh	Ah
	2.0	40

 
 

SD61

Diode

Diode	Vh	Ah	Va	mAa
	6.3	0.15	125	5

 
6D1 EA50

SE

Photocell

SG20

1932

B5	1	2	3	4	5	tc
	g2	g1	h	h	k	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	20	0.18	200	135	-1	3.0	1.0	0.275M	2.0

 
 

SG210

1927

Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.1	150	80	-1	-	-	.025M	0.3

 
 

SG215

1931

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.15	150	60	-1.5	1.5	0.25	1.5M	0.85

 
CV3702

SG220S

1935

B4	1	2	3	4	tc
	a	g2	f	f	g1

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	1.0	200	70	-	2.25	-	0.33M	1.5

 
 

SG2V

1932

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.15	150	80	0	4.0	0.25	0.4M	1.2

 
220VS VS24 S215VM SE220 PM12M

SH342

Thermal Delay Switch

CV0342

SL2-787

Triode

SP-16 Green

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.09	150	-6.0	-	17,000	0.95	16

 
 

SP-18 Blue

1926

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	ra	gm
	1.6	0.09	120	70,000	0.5

 
 

SP-18 Green

1925

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	1.8	0.3	120	-6.0	-	17,000	0.88	15

 
 

SP-18 Red

1925

B4	1	2	3	4

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	1.8	0.3	100	-	-	10,000	0.9

 
 

SP-18RR

1927

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	ra	gm
	2.0	0.3	100	4500	1.4

 
 

SP13

1934

Ct8	1	2	3	4	5	6	7	8	tc
	m	h	h	k	g3	-	g2	a	g1

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	ra	gm
	13.0	0.2	200	100	-	3	1.3M	2.2

 
 

SP1320

1934

Pentode

SP13C

1935

B7	1	2	3	4	5	6	7	tc
	m	a	g3	h	h	k	g2	g1

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	13.0	0.2	200	200	-2.2	2.5	0.9	2.5M	2.8

 
8D2 C50B CV3804 13SPA

SP141

1939

Pentode

SP181

1940

Pentode

SP2

1934

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.18	135	135	0	3.0	1.0	0.7M	1.8

 
ARP2 CV1320 Z21 Z22 SPT2 210SPT

SP210

1936

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.1	150	60	-0	2.95	0.75	0.6M	1.3

 
210SPT ARP4 CV1049 CV1322 VR49

SP215

1934

Pentode

SP22

1938

Pentode

SP220

1933

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	rk	rl	Pout
	2.0	0.2	150	-12.0	14.0	2,200	3.0	-	6-700	0.36W

 
 

SP2200

1936

Pentode

SP25

IO	1	2	3	4	5	6	7	8
	m	h	a	g2	g1	-	h	k

 
Beam Tetrode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout	D
	6.3	0.95	250	250	-4.4	40.0	8.5	10.5	4.3	8%

 
KT61

SP4

1933

B7	1	2	3	4	5	6	7	tc
	M	g1	g3	h	h	k	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	1.0	200	100	-2	3.0	1.1	2.2M	2.3

 
ARP6 CV1324 CV1468 8A1 AC/SG MSP4 MS/Pen CV1324 A50A AC/S2 HP4101C SPT4A

SP41

1938

MO	1	2	3	4	5	6	7	8	tc
	h	k	a	g2	g3	m	-	h	g1

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	0.95	200	200	-1.5	10.9	2.7	0.7M	8.5

 
ARP19 CV1335 CV1574 VR65A 5A/207D CV1699 CV1700

SP41/U

1927

B4	1	2	3	4
	a	-	f	f

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	4.0	1.0	250	30

 
 

SP42

1938

MO	1	2	3	4	5	6	7	8	tc
	h	k	a	g2	g3	m	-	h	g1

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	4.0	0.95	200	200	-1.5	20.0	5.0	9.0

 
ARP20 CV1336 NR79

SP42/U

1927

Rectifier FW

SP43/U

1928

Rectifier HW

SP45/U

1928

Rectifier HW

SP4B

1935

Pentode

CV3703

SP55R

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.0	0.25	120	-4	10.0	3500	1.70

 
 

SP6

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g3	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	250	250	-2	10	2.5	1M	7.6

 
6AM6 8D3 CV0138 EF91

SP61

1941

MO	1	2	3	4	5	6	7	8	tc
	h	k	a	g2	g3	m	nc	h	g1

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.6	200	200	-1.5	10.9	2.7	0.7M	8.5

 
ARP36 CV0118 CV0260 CV1065 VR65

SP610/B

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah
	6.0	0.1

 
 

SP610/G

1928

Triode

SP610/RR

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	6.0	0.1	150	-	-	3,200	2.5	8

 
 

SPT2

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.1	150	60	-0	2.95	0.75	0.6M	1.3

 
210SPT Z22 SP2

SPT4A

1936

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	h	h	k	g2	a

 
Tetrode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	4.0	1.0	250	100	-1.75	3.3	1.0	2.4

 
8A1 AC/SG CV1282 HP4101C AC/HP MSP4 MS/Pen MS4B MSG/HA AC/S2/Pen

SPTA

1936

Pentode

SS

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah
	4.3	0.06

 
 

SS10

1926

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.15	100	-10.5	4	8,750	0.62

 
PM2

SS11

1926

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	6.0	0.1	100	-9	-	5,700	1.25	7.1

 
PM6

SS11A

1927

Triode

PM256

SS12

1927

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	6.0	0.075	150	-3.0	-2.0	19,000	0.95	18

 
PM5X

SS13

1927

Triode

PM5B

SS210D

1931

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.25	150	-6.0	2.5	10700	1.25

 
PM2DX

SS210DDT

1934

Triode

TDD2A

SS210DG

1931

Triode

PM1DG

SS210HF

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	100	0	2.3	22.5k	0.8

 
PM1HF

SS210HL

1933

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	135	-1.5	2.2	21,500	1.4

 
PM1HL

SS210LF

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	125	-0	5.8	12k	0.9

 
PM1LF

SS210RC

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.1	150	-	-	72,000	0.5	36

 
PM1A

SS215P

1928

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.2	100	-7	4	7000	0.9

 
PM2

SS215SG

1929

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.3	150	75	-0	4.3	1.0	0.18M	1.1

 
PM12

SS215VSG

1932

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	2.0	0.18	150	90	0	2.5	0.5	1.4

 
PM12M

SS217D

1930

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.25	150	-6.0	2.5	10700	1.25

 
PM2DX

SS218HP

1934

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.18	135	135	0	3.0	1.0	0.7M	1.8

 
SP2

SS218SG

1928

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	ra	gm
	2.0	0.18	135	75	-0	2.0	330,000	1.5

 
PM12A

SS218VP

1934

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.18	135	135	0	3.0	1.25	0.4M	1.5

 
VP2

SS218VSG

1932

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	2.0	0.18	150	90	0	2.5	0.5	1.4

 
PM12M

SS220B

1933

B7	1	2	3	4	5	6	7
	g1(2)	g1(1)	a(1)	f	f	-	a(2)

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	Pout
	2.0	0.2	120	0	20.0	1.25W

 
PM2B

SS220P

1929

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.15	100	-10.5	4	8,750	0.62

 
PM2

SS220PA

1931

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	Pout
	2.0	0.2	135	-6	5.0	6000	3.5	0.27

 
PM2A

SS220Pen

1932

B5	1	2	3	4	5
	a	g1	f(-)	f(+)	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	ra	gm	Pout	D
	2.0	0.15	135	135	-4.5	5.6	0.15M	2.2	0.34W	10%

 
PM22A

SS220SP

1931

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.3	150	-10	19	2150	3.5

 
PM202

SS225D

1929

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.25	150	-6.0	2.5	10700	1.25

 
PM2DX

SS230Pen

1928

B4	1	2	3	4	5
	a	g1	f(-)	f(+)	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout
	2.0	0.2	150	150	-10.0	15	4.0	1.3	0.35W

 
PM22

SS230PP

1928

B4	1	2	3	4	5
	a	g1	f(-)	f(+)	g2

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout
	2.0	0.2	150	150	-10.0	15	4.0	1.3	0.35W

 
PM22

SS230SP

1929

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.4	150	-12	17.0	1,900	3.7	7.0

 
PM252

SS240SP

1931

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.4	150	-12	17.0	1,900	3.7	7.0

 
PM252

SS2AHF

1926

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	100	0	2.3	22.5k	0.8

 
PM1HF

SS2ALF

1926

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	125	-0	5.8	12k	0.9

 
PM1LF

SS2HF

1926

Triode

D.3HF

SS3HF

1926

Triode

DE3B

SS3LF

1926

Triode

Triode	Vh	Ah	Va	ra	gm
	4.0	0.1	125	7,000	1.0

 
PM4

SS4

1926

Triode

DFA1

SS4075HF

1928

Triode

Triode	Vh	Ah	Va	ra	gm
	4.0	0.075	125	16,000	0.85

 
PM3

SS4075RC

1928

Triode

Triode	Vh	Ah	Va	ra	gm
	4.0	0.075	125	63,000	0.55

 
PM3A

SS4075SG

1928

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	4.0	0.075	150	75	-	-	-	0.23M	0.87	200

 
PM14