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VT-139

Sensibly equivalent to:
VR150/30
    
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The base says VT-139 - for US Government procurement but the glass says 0D3 and VR-150. The same voltage stabiliser branded for different users.
The design is of a neon discharge tube whose geometery allows for a nominal stabilised voltage of 150 Volts at around 30 mA. The regulation is 150 plus or minus 5.5 Volts over the range 5 to 40 mA through the tube.
The base has the small red logo of RVC indicating that it was made in Canada, or possibly made by Hytron in the US and supplied by RVC.
The classic envelope is 38 mm in diameter and, excluding the IO base pins, is 88 mm tall.
References: Datasheet, 1040 & 3002.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
nc
k
7
nc
a
nc
3
nc

 

Absolute Maximum Operating Conditions
Stabiliser
Va
Vstab
mAa
180
150
5-40
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 24, 2016.
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