PP225	PP225S

Output pentode

 Introduced in 1936, PP225S: 1938

 

	1	2	3	4	5	6	7	8	base
PP225	a	g1	g3,f-	f+	g2				B5
PP225S	nc	g3,-f	+f	nc	nc	g1	g2	a	P

 

Vf	Af	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	Pdiss
2	0.265	135	135	-12	18	3.6	30,000	2	0.8