The 30P12 beam tetrode was designed as a single ended audio amplifier output valve for television receiver use.

To operate successfully on the low anode voltage available in a TV receiver the valve has to operate at higher current to achieve the target output power of around 2 Watts.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 65 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	ic	g1	k,g3	h	h	ic	a	ic	g2

 
Absolute Maximum Operating Conditions

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm	Pout	D
	12.6	0.3	170	180	-10.3	31	7.3	6.7	2.25	7%

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 02 July 2007 {find valves by name}