The 8608 is described as a premium quality power pentode. It was designed for wideband video power amplification.

The wide glass tube envelope is 27 mm in diameter and, excluding the B9A base pins, is 60 mm tall.

 
Pin Connections

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

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	6.3	0.6	125	125	-3.0	50.0	5.5	20,000	45	30

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 12 June 2007 {find valves by name}