▼ Menu

VT-74

Sensibly equivalent to:
5Z4
See also:
Metal Striptease
    
Extras ▼

 

The VT-74 is the USA service code for the commercial 5Z4 and this exhibit carries both designations.
The metal octal valve type was introduced in America by RCA during the mid 1930s. The 5Z4 was designed to supply equipment of up to 40 Watts total power, this rectifier type was made by several manufacturers as it became very popular.
American service code VT-74 on the other side of the can.
See also 5Z4G and 5Z4GT.
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 VT-74 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 October 25, 2013.
Return to Main Index