The 1P39 cold cathode photocell has a semi-circular cathode and a rod anode.

The wide glass tube envelope is 30 mm in diameter and, excluding the IO base pins, is 60 mm tall.

 
Absolute Maximum Operating Conditions

Photocell	Va
	-

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 02 February 2008 {find valves by name}