40

Triode

CV2501

4011A

Triode

CV1415

4017B

Rectifier HW

CV1446

4019B

Double Triode

AR11 CV1309

401A

B9	1	2	3	4	5	6	7	8	9
	x1	y1	a2	h,k	h	g1	a1,a3	y2	x2

 
Cathode Ray Tube

CRT	Vh	Ah	Va	Vg
	4.0	1.1	1,000	-25

 
E4103/B/4

402PenA

Pentode

4020

Triode

AR12 CV1310

4021B

Triode

AR20 CV1316

4022AR

Triode

AR13 CV1311

4033A

B5	1	2	3	4	5
	h	a	g1	c	h

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	6.0	1.4	600	-20	170	1,670	9.0	15

 
3B/102B CV0084 CV1220 NT37

4033L

B5	1	2	3	4	5
	h	a	g1	c	h

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	6.0	1.4	600	-20	170	1,670	9.0	15

 
CV1220 CV1688 3B/303A 3033A 4033A 3B/252B

405BU

4043C

Triode

3B/350A CV1448

4046A

Pentode

CV0244 MSPen

4049

Rectifier HW

CV1355 ESU300

4049A

Rectifier HW

CV1471

4049D

Rectifier (MV)

AH221

4052A

Pentode

CV1081

4061A

Pentode

ATP10 CV1369 5B/100A RK25

4064B

Rectifier HW

Rectifier	Vh	Ah	mAa
	5.0	7.5	1250

 
872 872A AH217 CV0642 CV1449 ESU872

4066A

B7	1	2	3	4	5	6	7
	-	g1	g2	h	h	k	a,

 
Pentode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout	D
	4.0	2.0	250	250	-4.4	40	8.5	10.5	4.2W	8%

 
7A3 ARP25 CV1181 KT41 NR59 PenA4

4069A

Pentode

ATP100 CV1372

4074A

UX7	1	2	3	4	5	6	7	tc	tc
	h	-	g1(1)	k	g1(2)	-	h	a(1)	a(2)

 
Double Triode

Triode	Vh	Ah	Va	Vg	mAa	Pdriv	Pdiss	Pout	freq	f.max
	6.3	0.8	300	-50	90	1W	10W	15W	100MHz	300MHz

 
2C34 CV0018 CV1061 DET19 RK34 VT61 VT224 TV03-10 VT61

4074B

Double Triode

Triode	Va	Vg	mAa	Pdriv	Pout
	300	-50	90	1W	15W

 
CV1573 VT61A

40CB4

Cathode Ray Tube

40PPA

Pentode

7D3

40SUA

B5	1	2	3	4	5
	a	-	h	h	k

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	40.0	0.2	250	100

 
1D5 CV1267 U4020 V20 UR1C C108 RZ

41

UX6	1	2	3	4	5	6
	h	a	g2	g1	k,g3	h

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	gm
	6.3	0.4	315	285	-18	32	2.3

 
CV0608

410LF

Triode

CV1152 L410 NR15A PM4DX

410LFT

Triode

410PT

Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	4.0	0.1	150	150	-7.5	17	-	2.0

 
 

4152

Thermal Delay Switch

Delay	Ah	Va	mAa
	0.092	220	1,500

 
 

417A

Klystron

41FP

Triode

CV2502 CV2509

41MDG

Tetrode

Tetrode	Vh	Ah	Va	ra	gm
	4.0	1.0	200	27,000	0.25

 
 

41MH

B5	1	2	3	4	5
	a	g1	h	h	k,

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	200	-1.5	3.2	18,000	4.0

 
CV2503

41MHL

B5	1	2	3	4	5
	a	g1	h	h	k

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	0.65	250	-4.5	6.5	11,500	3.5

 
CV2504 354V HLA2 A30D D4 MH4 AC/HL

41MLF

B5	1	2	3	4	5
	a	g1	h	h	k

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	250	-8	8.0	8,000	2.5

 
CV1038 MHL4 NR26 VR38

41MLT

Triode

CV1117 VR117

41MP

B5	1	2	3	4	5
	a	g1	h	h	k

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	200	-7.5	24	2500	7.5

 
CV1458

41MPG

B7	1	2	3	4	5	6	7	tc
	g2	g1	g3,g5	h	h	m,k	a	g4

 
Heptode

Octode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	4.0	0.65	250	70	-1.5	1.6	3.8	0.6

 
15A2 CV2505 CV3576 FC4 MH4105 MX40 V04 VHT4 X42 A80A

41MPT

Pentode

CV2506

41MTL

B5	1	2	3	4	5
	a	g1	h	h	k

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	200	-1.75	4.9	15,000	5.0

 
904V AC2/HL HLA2 MH41 V312

41MXP

B5	1	2	3	4	5
	a	g	h	h	k

 
Pentode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	200	-10	40	2000	5.0

 
41MXP ACP1 CV1122 LL4 O54V PA1

41STH

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

 
Triode Hexode

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

 
CV2508 TH4 20A1 A36A X41M AC/TH1

42

UX6	1	2	3	4	5	6
	h	a	g2	g1	k	h

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout
	6.3	0.7	250	250	-16.5	34	6.5	80k	2.5	3.2W

 
CV0609

420T

Pentode

CV2511

420TDD

Double Diode Pentode

CV2512

4212E

Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	14.0	6.0	3,000	-57	350	1,900	8.4	16

 
3C/270A CV1252 CV1619

4215A

Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	μ
	1.0	0.25	60	-3	1.0	25,000	6

 
 

4242A

Triode

211 242C CV0025 ES85 UE311

4261

Thyratron (Mercury Vapour)

5557

4270A

CV0030

4274A

Rectifier FW

CV1451 22S/200A 274A

4279A

279A CV0669

4282

Beam Tetrode

CV1365

4282B

Beam Tetrode

ATS70

42E

UX6	1	2	3	4	5	6
	h	a	g2	g1	k	h

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout
	6.3	0.7	250	250	-16.5	34	6.5	80k	2.5	3.2W

 
CV0609

42MP/Pen

B7	1	2	3	4	5	6	7
	-	g1	g2	h	h	k	a

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	4.0	1.95	250	250	-5.8	36	5.0	50,000	9.5	3.8W	10%

 
7A3 AC2/Pen CV1181 PenA4 A70C PT4 KT41 N41

42MPT

Pentode

ARP7 CV1325

42PAY

Pentode

CV2513

42PTB

42SPT

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	gm
	4.0	2.0	250	250	-10.5	64	15	11

 
10E/116 CV1444

43

UX6	1	2	3	4	5	6
	h	a	g2	g1	k	h

 
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	2.2W	10%

 
CV2514

4300A

Triode

CV1452 3B/170A 3B/400A 300B 300A 4275A

4304

Triode

CV2759

4304BB

B4	1	2	3	4	tc	tc
	-	f	f	-	g1	a

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	freq	f.max
	7.5	3.2	1000	-170	100	100 MHz	300 MHz

 
CV2761

4304CB

B4	1	2	3	4	tc	tc
	-	-	f	f	g1	a

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	Pdriv	Pdiss	Pout	freq	f.max
	7.5	3.25	1250	-225	90	4.5W	50	75	20	330

 
8019 CV1288 DET12 NT58 TSW50/A TY1-50 VT62 CV1252 CV1619 BW11 CV0315 CV1062

4307A

Pentode

CV1080

4313C

Thyratron

CV0075 3313C 313C G150/1A PTT3003

4316A

Triode

CV2762

4317

Voltage Stabiliser

CV1201

4357A

CV0027

43E

CV2514

43U

B4	1	2	3	4
	a(1)	a(2)	f	f

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	4.0	2.3	500	120

 
CV1039 UU5

4415

Camera Tube (Image Orthicon)

P875

4416

Camera Tube (Image Orthicon)

P891

441U

B4	1	2	3	4
	a(1)	a(2)	f	f

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	4.0	2.3	500	120

 
CV1039 UU5

442BU

B4	1	2	3	4
	a(1)	a(2)	f	f

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	4.0	2.5	350	120

 
CV1796 UU5

446B

Triode

2C40 CV0687

4478

Camera Tube (Videcon)

P826/4478

4493

Camera Tube (Videcon)

P893/4493

4494

Camera Tube (Videcon)

P894/4494

4495

Camera Tube (Videcon)

P894/4495

44A/160M

B9G	1	2	3	4	5	6	7	8	9
	h	g1(1)	k	a(1)	g2	a(2)	k	g1(2)	h

 
Double Beam Tetrode

Tetrode

Vh

Ah

Va

Vs

Vg

mAa

mAs

mAg

Pdriv

Pdiss

Pout

freq

f.max

6.3

1.6

300

175

-50

120

14

2.5

0.3W

15W

24W

160

250

 
CV0415 TT15

45

UX4	1	2	3	4
	f	a	g1	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	rl	gm	Pout
	2.5	1.5	275	-56	36.0	1,700	4,600	2.0	2W

 
CV0610

451

CV3585

451PT

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	45.0	0.1	170	170	-10.4	53	10	20,000	9.5

 
45A5 N142 UL41

451U

B4	1	2	3	4
	a(1)	a(2)	f	f

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	1.9	2.8	50	1,300

 
AU1 CV1264 CV2529 FW4-500 NU12 U18/20

45A5

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	45.0	0.1	170	170	-10.4	53	10	20,000	9.5

 
CV1977 N142 UL41 451PT

45B5

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

 
Pentode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pdiss	Pout	D
	45	0.1	170	170	-12.5	70	5	230k	10	12.0W	5.2	10%

 
10P18 N119 UL84

45Z5GT

Rectifier HW

CV2530

46

UX5	1	2	3	4	5
	f	a	g1	g2	f

 
Tetrode

Tetrode	Vh	Ah	Va
	2.5	1.75	400

 
CV2531

460BU

B4	1	2	3	4
	a(1)	a(2)	f	f

 
Rectifier FW

Rectifier	Vh	Ah	Va	mAa
	4.0	2.3	500	120

 
UU5

4643

Triode

464A

Triode

2C43 CV0688

4685

Tetrode

4687

Ct8	1	2	3	4	5	6	7	8
	-	-	-	-	k	-	-	a

 
Tetrode

Stabiliser	Va	mAa
	100	10.0-40.0

 
 

4687A

B4	1	2	3	4
	a	k	-	-

 
Tetrode

Stabiliser	Va	mAa
	100	10.0-40.0

 
 

47

UX5	1	2	3	4	5
	f+	a	g1	g2	f-

 
Voltage Stabiliser

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	rk	rl	Pout
	2.5	1.75	250	250	-16.5	31.0	6.0	60,000	2.5	450	7,000	2.7W

 
 

484V

B5	1	2	3	4	5
	a	g1	f	f	k,m

 
Triode

Triode	Vh	Ah	Va	Vg	ra	gm	μ
	4.0	1.0	200	0	21,800	2.2	48

 
 

49

UX5	1	2	3	4	5
	f+	a	g1	g2	f-

 
Tetrode

Tetrode	Vh	Ah
	2.0	0.12

 
CV2532