The Pen46 is an early television line output pentode valve. In line scan duty high surge voltages appear, this valve can withstand an anode surge of 3000 Volts.

The box anode is open at the sides, and two of the helical wire grids are visible.

The classic envelope is 50 mm in diameter and, excluding the MO base pins, is 118 mm tall.

 
Pin Connections

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

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Pdiss
	4.0	1.75	315	230	20W

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 10 June 2007 {find valves by name}