The Triotron TD2 is a general purpose battery triode from 1934. It is described as a dark emitter suggesting an oxide coated filament.

The Triotron band was made by Schrack of Austria and the attached data sheet is taken from their 1931 booklet. This booklet came in the box with the TD2.

Internal details are obscured by the silver gettering.

The balloon envelope is 48 mm in diameter, and excluding the B4 base pins is 86 mm tall.

 
Pin Connections

B4	1	2	3	4
	a	g1	f	f

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	μ
	2.0	0.15	150	-7	7.0	10,000	0.9	9

This exhibit was last updated on 09 February 2008