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Sensibly equivalent to:
E1342 V526T VS26
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The CV161 photocell is a relatively large device and the style of the screw top cap suggests a early/mid 1930s origin. The cathode is semi-circular with a rectangular wire rod anode connected to the top cap.
The wide glass tube envelope is 33 mm in diameter, and excluding the B4 base pins is 100 mm tall.
Reference: Data-sheet.


Absolute Maximum Operating Conditions
Light Control
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 02, 2013.
shape:wide.glass.tube construction:pinch type:photocell age:1930.1940 base:b4 pins:4 pin:
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