200-0069

Thyratron (Mercury Vapour)

BT19

2000

18049 68506

201-A

202

Barretter

CV1200 NS3

202DDT

Double Diode Triode

202STH

Triode Hexode

TH21C C36A TH2321

202VP

Pentode

202VPB

Pentode

203THA

B7	1	2	3	4	5	6	7	tc
	a(t)	gt,g3	g2,g4	h	h	m,k	a	g1

 
 

Hexode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	20.0	0.3	250	100	-2	3.5	5.5	0.85

 
 

204A

ES204A

2050

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

 
Thyratron

Thyratron	Vh	Ah	Va	mAa
	6.3	0.95	650	2,000

 
CV2565

2050A

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

 
Thyratron

Thyratron	Vh	Ah	Va	mAa
	6.3	0.95	650	2,000

 
EN32 ME1501

2051

Thyratron

CV1798

207

ESW207

20A1

B7	1	2	3	4	5	6	7	tc
	a(t)	gt,g3	g2,g4	h	h	m,k	a	g1

 
Triode

Hexode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	1.3	250	100	-3	3.0	6.0	1.6	0.75

 
CV1194 CV1424 NR84 X41 AC/TH1 41STH

20A2

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

 
Thyratron

Thyratron	Vh	Ah	Va	mAa
	6.3	1.0	600	1,250

 
CV1848 2050 4G/281D WT-246 WT-210-0004 XB7674

20A3

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

 
Thyratron

Thyratron	Vh	Ah	Va	mAa
	6.3	0.6	650	500

 
2D21 CV0797 E1955 EN91 4G/280K

20CV

Photocell

20D1

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

 
Double Diode

Diode	Vh	Ah	Va	mAa
	9.5	0.2	175	9

 
 

20D2

Triode Hexode

20D3

Diode Heptode

12AH8

20D4

Triode Heptode

20F2

B8A	1	2	3	4	5	6	7	8
	h	a	s	g3	g2	g1	k	h

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	11.0	0.2	135	135	-1.3	27	6.5	10.6

 
 

20L1

B8A	1	2	3	4	5	6	7	8
	h	a(2)	g1(2)	k(2)	a(1)	g1(1)	k(1)	h

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	12.6	0.2	250	-11.5	10.0	6,200	2.8

 
 

20P1

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Pdiss
	38	0.2	400	250	15W

 
 

20P3

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
	20.0	0.2	195	210	-11.5	51.0	12.7	7.4	4.5W	7%

 
 

20P4

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Pdiss
	38	0.2	400	250	10W

 
CL30

20P5

Beam Tetrode

21

Triode

CV0620

210DDT

B5	1	2	3	4	5	tc
	a	a(d1)	f(-)	f(+)	a(d2)	g1

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-1.5	1.7	28,600	1.4

 
CV1044 HL21DD VR44 TDD2A K23B H20 HD24

210HF

B4	1	2	3	4
	a	g	f	f

 
Triode

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

 
PM1HF HLB1 K30C HL2

210HL

Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-3	1.6	22k	1.1

 
CV1050 HL2K PM2HL VT50

210LF

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-4.5	4.8	10,000	1.4

 
AR9 CV1021 CV1027 CV1307 L2 L21 L210 VR21 VR27 PM1LF K30B

210PG

Heptode

CV1043 VHT2A VR43 X22 FC2 K80A

210RC

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.1	150	-1.5	0.85	50,000	0.7	35

 
H2 H210

210SPT

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

 
CV1049 SP210 VR49 SP2 SPT2 Z22

210VPA

Pentode

CV2574 W21

210VPT

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.18	150	150	0	3.0	1.25	0.04M	1.5

 
ARP13 CV0171 CV1083 CV1332 NR41 VP21 VR83 VP2 K50M VPT2 VP210

211

Triode

242C 4242A CV0025 CV2576 ES85 UE311 VT4C

2151

Pentode

215P

Triode

P215

215SG

B4	1	2	3	4	tc
	g2	g1	f	f	a

 
Tetrode

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	2.0	0.15	150	80	-1.5	7.0	-	0.3M	1.1	330

 
CV1018 VR18 Z21 PM12 S2 S23 SG215

21A1

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

 
Thyratron (Hydrogen)+B370

Thyratron	Vh	Ah	Va	mAa
	6.3	0.95	650	2,000

 
4G/320D 6574

21A6

B9A	1	2	3	4	5	6	7	8	9	tc
	ic	g1	k	h	h	ic	ic	g2	g3	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	Pout	D
	21.5	0.3	200	200	-31.5	87	12.5	20W	5.5%

 
CV5077 N359 PL81 N152

21VO6

B9A	1	2	3	4	5	6	7	8	9
	ic	g1	k	h	h	-	a	g2	g3

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.75	250	150	-2.5	40	5	0.1M	13

 
EL822

2201PT

Pentode

ARP14 CV1333 Z22

220B

Double Triode

AR16 CV1032 VR32

220HPT

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout	D
	2.0	0.2	150	150	-4.5	8.0	1.5	2.5	0.5W	8%

 
KT2

220LF

Triode

AR15 CV1313

220OT

Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	2.0	0.2	120	120	-4.5	4.3	-	2.5,

 
PM22A PenB1 K70B PT2 KT2 Pen220 220HPT

220P

B4	1	2	3	4
	a	g	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	Pout
	2.0	0.2	150	-7.5	11	4,000	2.25	0.19W

 
CV1020 VT20 PM2 P2

220PA

B4	1	2	3	4
	a	g	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.2	150	-4.5	10.0	4000	4.0

 
CV1022 L2 LP2 P220 PB1 PM2A VR22 K30G LP2 P220

220PT

B4	1	2	3	4
	a	g1	f	f

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.2	150	150	-9	19.0	4.0	-	2.5

 
CV1051 Pen220A VT51 PM22C

220R

Triode

AR14 CV1312

220TH

B7	1	2	3	4	5	6	7	tc
	f	m	a	a(t)	g1(t),g3	g2,g4	f	g1

 
Triode Heptode

Hexode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.23	135	6-	-1.5	0.95	1.6	0.6M	0.43

 
CV1082 X24 TH2

220VPT

Pentode

ARP24 CV1338

220VSG

Tetrode

CV1028 S215VM VR28

2255

Camera Tube (Videcon)

8626

2255ROE

Camera Tube (Videcon)

8541A

2255IND

Camera Tube (Videcon)

P849

225DU

Rectifier FW

CV1454

22M1

Glow Modulator

1B59

230XP

Triode

CV1023 VT23

238B

Ignitron

BK46/5555

23D

Cathode Ray Tube

24

Tetrode

CV0936

240B

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

 
Double Triode

Triode	Vh	Ah	Va	Vg	mAa	Pout
	2.0	0.2	120	0	3.0	2.0W Ra-a_8,000

 
 

240QP

B7	1	2	3	4	5	6	7
	g1(2)	g1(1)	a(1)	f	f	g2	a(2)

 
Double Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	Pout
	2.0	0.3	120	120	-10.7	3.3	0.45	1W

 
QP22B QPT2 QP21 QP230

242C

Triode

211 4242A CV0025 ES85 UE311

244V

B5	1	2	3	4	5
	a	g1	h	h	k

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	4.0	1.0	200	-5.6	5.5	9,250	2.7	25

 
CV1180 NR58 V312

24A/24E

Tetrode

24B1

Trigatron

CV6008

24B9

Trigatron

CV6173

24D

B9G	1	2	3	4	5	6	7	8	9
	h,k	y1	y2	a2,a4	x1	x2	a3	g1	h

 
Cathode Ray Tube

CRT	Vh	Ah	Va
	6.3	0.55	1,500

 
3AFP31 DH7-91

250TH

Triode

CV2589

25A6

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	rk	rl	Pout	D
	25.0	0.3	160	120	-18.0	33.0	12.0	42,000	2.4	440	5,000	2.2W	10%

 
CV0549

25A6G

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	25	0.3	160	120	-18	36	12	42,000	2.4	2.2	10%

 
 

25A6GT

Pentode

CV0550

25E6

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	mAa	mAs	Pdiss
	25	0.3	170	170	100	8.0	8W

 
PL36

25L6

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	rk	rl	Pout	D
	25.0	0.3	200	125	-8.7	46.0	2.2	28,000	8.0	180	3,000	3.8W	10%

 
CV0552

25L6G

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

 
Pentode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout	D
	26	0.3	135	135	-7.6	75	5.0	9.0	3.5	11%

 
CV0551 CV1287 KT32

25L6GT

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

 
Pentode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	25	0.3	200	110	-8	50	2	30,000	9.5	4.3W	10%

 
CV0553 KT32

25RE

Rectifier FW

25SN7GT

Double Triode

CV0423

25T

Triode

3C24 CV0941 HK24

25TG

Triode

3C24

25U4GT

Rectifier HW

25Y5

Rectifier FW

25Z4G

IO	1	2	3	4	5	6	7	8
	ic	h	-	-	a	-	h	k

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAs
	26	0.3	250	120

 
U31

25Z5

UX6	1	2	3	4	5	6
	h	a(2)	k(2)	k(1)	a(1)	h

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	25	0.3	235	150

 
CV0555

25Z6

Rectifier FW

CV0558

25Z6GT

IO	1	2	3	4	5	6	7	8	9	tc
	-	h	a(1)	k(1)	a(2)	-	h	k(2)

 
Rectifier FW

Rectifier	Vh	Ah
	25.0	0.3

 
CV0559

26A7GT

Double Tetrode

CV3577

27

UX5	1	2	3	4	5
	h	k	g1	a	h

 
Triode

Triode	Vh	Ah	Va
	2.5	1.75	180

 
 

272

Rectifier MV

5557

279A

4279A CV0669

27GB5

B9D	1	2	3	4	5	6	7	8	9	tc
	g1	g1	k,g3	h	h	g2	g2	k,g3	k	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	mAa	mAs	Pdiss
	27	0.3	230	200	100	10	12W

 
PL500 PL504

27M1

Photomultiplier

Photomultiplier	Va	mAa
	1250	10.0

 
931A CV0337

27M2

Photomultiplier

CV5085

27SU

Rectifier HW

28D7

B8B	1	2	3	4	5	6	7	8
	h	g1(2)	g2	a(2)	a(1)	k	g1(1)	h

 
Double Beam Tetrode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	rk	rl
	28	0.4	28	28	-	18.8	1.2	180	68,000

 
CV0945 CV0946

29C1

Diode

CV0430