The 5U4 type of rectifier was made in several forms over its life time. This version has the modern glass base construction and a tubular envelope. It delivers 100 Watts of DC power, a reasonable size valve. It would be used for all types of medium power equipment.

We have no exact details of design age, but these devices were used in the 1940s and 1950s. They were not specified for new equipment by the 1960s.

The glass tubular envelope has a maximum diameter of 36 mm and length excluding IO base pins, is 92 mm.

 
Pin Connections

IO	2	4	6	8
	f	a(2)	a(1)	f

 
Absolute Maximum Operating Conditions

Rectifier	Vh	Ah	Va	mAa
	5.0	3.0	450	225

Thanks to Frank Philipse for supplying the above datasheet

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