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OPTEK OPD83 Photo Transistor NPN hFE 400+ NEW Old Stock


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Old Stock

Ex workshop spare parts

For experimentation because I only can find the most basic of information about this device which I found lurking on one of the spare parts shelves I am clearing up.


OPTEK - Photo Transistor

Type: OP D83

I believe this device has been out of production for a long time.

Metal case (TO-18)

Clear front (top) lens

The following details from the transistor tester:

NPN Bipolar

hFE 400+ - tested all devices and the minimum was 410 with a maximum approaching 500

Assumption is that this is designed to detect visible light (380 ~ 780nm)

I could not find datasheets in my library and online searching revealed nothing as well


Full part # printed on the side of the TO-18 metal package (OPTEK logo) OP D83 602 MEXICO

All devices are marked the same so I believe these are all from the same batch 602 and made in Mexico



NEW Old Stock


Only lightly oxidised legs, still shiny

NEW Old Stock