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502A

Sensibly equivalent to:
GL502A
    
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The RCA 502A is a gas filled tetrode thyratron. It is designated for service as a relay or as a a grid controlled rectifier. The peak current at one Amp is ten times the average current rating, as much as for a normal rectifier.
The best date we have so far is from the revised data-sheet.
The envelope paint is gloss and the print is orange.
The thin metal tube envelope is 25 mm in diameter, and excluding the IO base pins is 51 mm tall.
Reference: Datasheet. Type 502A was first introduced in 1948.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
h
a
-
g1
g2
h
k,m

 

Absolute Maximum Operating Conditions
Thyratron
Vh
Ah
6.3
0.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 27, 2013.
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