EF2

Telefunken EF2

H.F. pentode used in car radio and as RF/MF amplifier

Introduced in 1934

1	2	3	4	5	6	7	8	top	base
m	f	f	k	g3		g2	a	g1	P

Vf	Af	Va	Vs	Vg	mAa	mAs	Ra	gm
6.3	0.4	250	100	-2.2	4.5	1.4	1,400,000	2.2

Equivalent

S628, VF2