▼ Menu

5Z4

Sensibly equivalent to:
CV1864 VT-74
See also:
Metal Striptease
    
Extras ▼

 

This exhibit is a Cossor Metal valve but it also says made in USA. On the other side of the envelope it also gives the actual maker as Ken-Rad. Clearly a re-brand for use in Cossor sets.
The 5Z4 was designed to supply equipment of up to 40 Watts total power.
No pretence the Ken-Rad name is proudly presented on the envelope.
The thin metal tube envelope is 25 mm in diameter and excluding the IO base pins, is 67 mm tall.
References: Datasheet, 1040 & 1043. Type 5Z4 was first introduced in 1935.

 

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 PDF datasheet.
Updated May 19, 2014.
shape:thin.metal.tube construction:glass.disc type:rectifier.fw age:1930.1940 base:io heater:5.0v pins:8 pin:1.m pin:2.h pin:3.nc pin:4.a(2) pin:5.nc pin:6.a(1) pin:7.nc pin:8.h.k
Return to Main Index