The 30C15 is a triode pentode designed for frequency changer use in VHF television receivers.

The triode is the oscillator stage and its output together with the incoming signal would be mixed in the non-linear characteristics of the pentode mixer to produce a much lower IF frequency that was easier to amplify.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	k	g2	a	h	h	a(t)	g1(t)	k,g3,s	g1

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	mAa	mAs	ra	gm
	9.0	0.3	164	138	7.6	2.3	0.6M	3.3

Triode	Va	mAa
	120	6.0

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 02 July 2007