The 5Z4 was designed to supply equipment of up to 40 Watts total power, this rectifier was made by several manufacturers. This suggests it became a very popular type. The miniature metal octal type was introduced in America by RCA during the mid 1930s.

See also 5Z4G and 5Z4GT.

The thin metal tube envelope is 25 mm in diameter and excluding the IO base pins, is 64 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8
	m	h	nc	a(2)	nc	a(1)	nc	h-k

 
Absolute Maximum Operating Conditions

Rectifier	Vh	Ah	Va	mAa
	5.0	2.0	350	125

Thanks to Frank Philipse for supplying the above datasheet

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This exhibit was last updated on 24 February 2008 {find valves by name}