9A1

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

 
AC/VP1 HP4106C MVSPen VMP4G VPT4

9A8

B9A	1	2	3	4	5	6	7	8	9
	at	g1	g2	h	h	ap	kp,s,g3	kt	gt

 
Triode Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	9	0.3	170	170	-5.5	5.2	1.5	0.87M	2.1

 
30C1 PCF80 LZ319 30C1 LZ329 8A8

9AK8

B9A	1	2	3	4	5	6	7	8	9
	ad(3)	ad(2)	kd(2)	h	h	ad(1)	k,kd(1),kd(3)	g	a

 
Triple Diode Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	9.5	0.3	200	-2.3	1	50k	1.4

 
PABC80

9AQ8

B9A	1	2	3	4	5	6	7	8	9
	a(2)	g1(2)	k(2)	h	h	a(1)	g1(1)	k(1)	s

 
Double Triode

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	9.5	0.3	170	-1.5	10	8,000	6.2

 
PCC85

9BW6

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

 
Beam Tetrode

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	9.0	0.3	315	225	-13.0	34.0	2.2	77,000	3.75	5.5W	12%

 
 

9C25

Triode (Power)

BR1102

9C395

Triode

9D2

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	13	0.2	250	125	-1	10.0	3.5	0.6M	1.65	1,000

 
12VPA ARP3 CV1106 CV1321 VP1322 VR106 C50N VP13C

9D6

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	0.2	250	150	-0.65	8	2	0.5M	2.5

 
6CQ6 CV0131 EF92 V884 W77

9D7

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

 
Pentode

Pentode	Vh	Ah	Va	Vs	mAa	gm
	6.3	0.3	250	100	10	8.4

 
CV5409

9JW8

B9A	1	2	3	4	5	6	7	8	9
	a(t)	g1	g2	h	h	a	kp,s,g3	k(t)	g1(t)

 
Triode Pentode

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra
	9.0	0.3	100	100	-1	6.0	1.7	0.4M

 
PCF802

9KP5

CV0109

9U8

B9A	1	2	3	4	5	6	7	8	9
	a(t)	g1(p)	g2(p)	h	h	a(p)	k,g3(p),s	k(t)	g1(t)

 
Triode Pentode

Pentode	Vh	Ah	Va	Vs	mAa	mAs	ra	gm
	9.5	0.3	250	110	10.0	3.5	0.4M	5.2

 
PCF82