The Hivac D210SW is a battery triode with a ceramic base and a rich Gold metalisation. It probably dates from the early 1930s and with a 2 Volt filament was designed to be heated from an accumulator supply.

The classic envelope is 37 mm in diameter, and excluding the B4 base pins, is 110 mm tall.

 
Pin Connections

B4	1	2	3	4	tc
	a	-	f	f	g1

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-4.5	2.4	12,000	1.35

This exhibit was last updated on 05 March 2005