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VR54

Sensibly equivalent to:
1638 ARDD5 CV1054 EB34 OM3
    
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The VR54 is a double diode with the VR indicating a receiving valve for the UK Royal Air Force. The specification was based on the commercial EB34 and function would be in signal detection etc.
The diodes are rated for signal use, with separate cathodes and a screen between sections.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 62 mm tall.
References: Datasheet & 1040. Type VR54 was first introduced in 1941.

 

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

 

Absolute Maximum Operating Conditions
Diode
Vh
Ah
Va
mAa
6.3
0.2
200
0.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 05, 2013.
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