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20A2


G8LSD Valve Collection
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Sensibly equivalent to:- CV1848 - 2050 - 4G/281D - WT-246 - WT-210-0004 - XB7674
 
 
 
This exhibit was last updated on 31 January 2013

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This tetrode thyratron is built on a conventional glass pinch. The same valve from STC uses a glass disc base, the forerunner of the modern all glass construction.
The control ratio is high at 350 and the voltage drop across the tube when conducting is 9 Volts.
The classic envelope is 36 mm in diameter and, excluding the IO base pins, is 85 mm tall.
Reference: Datasheet. Type 20A2 was first introduced in 1957.
 
Pin Connections
IO
1
2
3
4
5
6
7
8
-
h
a
-
g1
g2
h
k
 
Absolute Maximum Operating Conditions
Thyratron
Vh
Ah
Va
mAa
6.3
1.0
600
1,250

Thanks to Frank Philipse for supplying the above PDF datasheet
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