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QS150/40

Sensibly equivalent to:
0D3 150C3 CV216 G150/3D GD150A/S GL150/30 KD25 VR150/30 VT139
    
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This valve is clearly marked CV216 but also carries the commercial QS150/40. CV216 is also the service code for the commercial 0D3 or VR150 or GD150A/S gas discharge voltage stabilisers.
The valve exhibits a near constant voltage across it for currents within the range 5 mA to 40 mA. 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.
The construction is of a central cold cathode within a cylindrical anode.
The GEC brand label plus the GEC Type code of QS150/40.
The classic envelope is 38 mm in diameter and, excluding the IO base pins, is 86 mm tall.
Reference: Data-sheet. Type QS150/40 was first introduced in 1954.

 

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 July 28, 2020.
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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