The PM24M is a directly heated output pentode. The valve would have been designed for the audio stages in AC mains broadcast receivers. It has an output of 2.8 Watts and was aimed at single ended use. The PM24M was a replacement type made after WW2.

The classic envelope is 47 mm in diameter and, excluding the B5 base pins, is 111 mm tall.

 
Pin Connections

B5	1	2	3	4	5
	a	g1	f-	f+	g2

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	1.1	250	250	-17	30	5.6	43k	3.0

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This exhibit was last updated on 07 August 2006