H141D

Diode Triode

H2

Triode

CV2977

H210

Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-1.5	1.0	50,000	0.7

 
 

H2D

Triode

CV2977

H30

Triode

CV2979

H41

Triode

H410

Triode

CV2981

H42

B7	1	2	3	4	5	6	7	tc
	a(d2)	m	a(d1)	h	h	k	a	g1

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	250	-4	4.0	18,200	2.2

 
CV1182 MHD4 NR60

H4D

B7	1	2	3	4	5	6	7	tc
	a(d2)	m	a(d1)	h	h	k	a	g1

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	250	-4	4.0	18,200	2.2

 
AC/HL/DD 11A2 MHD4 DDT DDT4 DH42

H4E

Diode

H610

Triode

CV2982

H63

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

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.3	0.3	250	-2	1.0	66,000	1.5

 
6F5G CV1073 VT73

HA1

Triode

CV1171 NR50

HA2

Triode

Triode	Vh	Ah	Va	Vg	mAa	ra
	6.3	0.15	180	-9.0	8	12000

 
955 CV1059

HABC80

Triple Diode Triode

HAD

B7	1	2	3	4	5	6	7	tc
	a(d2)	m	a(d1)	h	h	k	a	g1

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	13.0	0.2	250	-1.5	1.0	83,300	1.5

 
HL/DD/1320 11D3 13DHA TDD13C

HBC90

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

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.3	0.3	250	-3	1	58k	1.2

 
12AT6

HBC91

Double Diode Triode

12AV6

HD14

IO	1	2	3	4	5	6	7	8	tc
	m	f+	a	-	a(d)	-	f-	-	g1

 
Diode Triode

Triode	Vh	Ah	Va	mAa	ra	gm
	1.4	0.05	90	0.15	240k	0.275

 
1H5GT CV1818 DAC32

HD22

Double Diode Triode

HD23

Double Diode Triode

HD24

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

 
210DDT AR10 CV1308 CV2985 DDT2 L21DD TDD2A

HD4

Diode Triode

HF100

Triode

CV2987

HF130

Pentode

838 CV0638 RK58

HF93

Pentode

12BA6 CV1928

HF94

Pentode

12AU6

HK24

Triode

25T 3C34 CV0745 CV0941

HK24G

Triode

3C24 B1109 CV0789

HK257B

Pentode

4E27 CV0824

HK54

Triode

4C25 CV0707

HK645

Triode

CV0670

HK90

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g2-g4	g3

 
Heptode

Heptode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Vosc
	12.6	0.15	250	100	-1.5	3	7.1	1M	0.475	10

 
12BE6

HL/DD/1320

B7	1	2	3	4	5	6	7	tc
	a(d2)	m	a(d1)	h	h	k	a	g1

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	13.0	0.2	250	-1.5	1.0	83,300	1.5

 
11D3 13DHA CV3503 HAD TDD13C

HL13

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

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	13.0	0.2	200	-3.7	5.0	12,000	3.3

 
 

HL1320

Triode

4D1 AR7 CV1109 CV3502 NR55 VR109 C30B DA HL13C

HL133

Triode

CV2998

HL133DD

Double Diode Triode

CV2999

HL13C

Triode

4D1 CV1109 HL1320 DA C30B

HL2

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-3	1.8	18,000	1.5

 
210HF PM2HL HLB1

HL210

B4	1	2	3	4
	a	g1	f	f

 
Triode

Triode	Vh	Ah	Va	ra	gm
	2.0	0.1	150	28k	0.5

 
AR4 CV1303 CV3500 PM1HF

HL21DD

Double Diode Triode

210DDT CV1044 VR44

HL22

Triode

HL23

MO	1	2	3	4	5	6	7	8
	f	-	a	-	g1	m	-	f

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.05	150	-2.4	1.5	27,000	1.2

 
CV1130 CV1586 CV2994 VR130 3A/205D

HL23DD

MO	1	2	3	4	5	6	7	8	tc
	f(-)	-	a	-	a(d2)	m	a(d1)	f+	g1

 
Double Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.05	150	-2.8	1.5	24,000	1.05

 
AR8 CV1306 CV2995 BVA132

HL2K

Triode

210HL CV1050 PM2HL VT50

HL4

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	5.0	11k	3.5

 
CV1173

HL41

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

 
Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	0.65	250	-4.5	7.0	11,500	3.1

 
CV0024 3A/204D

HL41DD

Double Diode Triode

CV2996

HL42DD

Double Diode Triode

HL610

Triode

CV3501

HL63

Double Diode Triode

CV2997

HL92

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	50.0	0.15	110	110	-7.5	49	4.0	10,000	7.5	1.9	9%

 
50C5 CV1959

HLA2

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

 
41MTL 904V AC2/HL HLA2 MH41

HM04

B7G	1	2	3	4	5	6	7
	g1	k	h	h	a	g2-g4	g3

 
Heptode

Heptode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Vosc
	6.3	0.3	250	100	-1.5	3	7.1	1M	0.475	10

 
6BE6 EK90 X77

HN309

Triode Pentode

HP2

Diode Triode

HP210

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	0.12	150	150	-1.5	1.9	0.7	2.5M	1.9

 
 

HP215

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
	2.0	0.15	150	70	-0	3.75	0.75	1.25

 
210SPT HP210 SPT2

HP4101

Pentode

HP4101C

Pentode

8AI AC/SG CV1282

HP4106C

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	0.65	250	250	-2.8	7.4	1.85	1M	2.0

 
9A1 AC/VP1 CV0518 MVSPen VMP4G VPT4G

HP6

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 6F12 8D3 CV0138 EF91 Z77

HR1

Rectifier HW

6305 R10 2T/270K HR2

HR11

Rectifier HW

HR12

Rectifier HW

HR2

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

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	4.0	0.5	3500	5.0

 
6304 CV0261 R10 2T/270K R20 HR1

HR3

Rectifier HW

HR6

Rectifier HW

HR9

Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	4.0	1.3	15000	8

 
 

HS256

Camera Tube

HVR2

B4	1	2	3	4	tc
	-	-	h,k	h	a

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	4.0	0.65	6000	3.0

 
CV1134 NU34 VU134

HY615

Triode

Triode	Vh	Ah	Va	Vg	mAa
	6.3	0.175	300	-35	20.0

 
CV3506

HY75

Triode

CV0751

HY90

B7G	1	2	3	4	5	6	7
	-	-	h	h	a	hct	k

 
Rectifier HW

Rectifier	Vh	Ah	Va	mAa
	35	0.15	250	100

 
35W4

Horned

Triode