The VP41 is a variable-mu RF amplifier pentode from Mazda. This valve design was introduced in 1938.

The classic envelope is 32 mm in diameter and, excluding the MO base pins, is 90 mm tall.

 
Pin Connections

MO	1	2	3	4	5	6	7	8	tc
	h	k	a	g2	g3	m	-	h	g1

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	4.0	0.65	250	200	-2.7	7.7	2.0	1.3M	2.0

Thanks to Frank Philipse for supplying the above datasheet

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