H410d

Valvo H410D


B4 base	B5 base

HF tetrode

Introduced in 1929

1	2	3	4	5	tc	base
g2	f	f	g1	s	a	B4*/B5

*) shield to one side of the filament

Vf	Af	Va	Vs	Vg	mAa	mAs	ra	gm
4	0.1	200	80	-2	5	2	600,000	0.9

Equivalent

A442R, B442, C150, DZ2, H406D, L409, RES094, S406, S410