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0D3

Sensibly equivalent to:
150C3 CV216 G150/3D GD150A/S KD25 QS150/40 VR150/30 VR150ST VT-139
    
Extras ▼

 

The 0D3 is a gas filled discharge valve that exhibits a near constant voltage across the valve for currents within the range 5mA to 40mA. In fact the regulation is 150 plus or minus 5.5 Volts.
Internally pins 3 and 7 are linked. This shorting link is designed to protect the connected equipment from overload, as when the stabiliser is removed the supplied circuit is disconnected.
This Type is also known as VR-150, VR150/30 and VT-139. Most are present on this exhibit.
The construction is of a central cold cathode within a cylindrical anode.
The bright cylinder held between mica discs. The second electrode is a central rod.
The classic envelope is 38 mm in diameter and, excluding the IO base pins, is 88 mm tall.
Reference: Datasheet. Type 0D3 was first introduced in 1939.

 

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 December10, 2019.
shape:classic construction:pinch type:voltage.stabiliser age:1930.1940 base:io pins:8 pin:1.nc pin:2.k pin:3.7 pin:4.nc pin:5.a pin:6.nc pin:7.3 pin:8.nc
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