The B729 is a pair of separate amplifier triodes within the same envelope. The two sections are separated by a metal screen.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.

 
Pin Connections

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

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	6.3	0.3	200	-7.9	10.0	5.3k	3.4

 

This exhibit was last updated on 14 February 2004