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90CG

Sensibly equivalent to:
CV2133
    
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Mullard describe the 90CG as a gas filled photo cell, most sensitive to incandescent light sources and to infra-red radiation.
The maximum anode voltage is 90 V and pin four faces the direction of the incident light.
Caesium on oxidised silver is the active material and the cathode effective area is 3 sq cm. The dark current is 0.1 µA and the maximum current is 2 µA.
The cathode is shaped as a half cylinder.
The anode is a single vertical rod.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 47 mm tall.
Reference: Datasheet. Type 90CG was first introduced in 1955.

 

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

 

Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December23, 2016.
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