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0B2

Sensibly equivalent to:
108C1 108C1 6074 CV1833 CV1833 G108/1K QS1208
    
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The 0B2 is a B7G voltage stabilizer. These devices were made obsolete by the Zener diode.
The regulation of the 0B2 was 3.5 Volts for currents of between 5 and 30 mA. So the voltage across this tube in service would have been held at between 106 and 110 volts. The tube strikes at a voltage of 133 volts.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 57 mm tall.
References: Datasheet & 1040. Type 0B2 was first introduced in 1948.

 

Pin Connections
B7G
1
2
3
4
5
6
7
a
k
ic
k
a
ic
k

 

Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
108
30
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 28, 2013.
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