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Old July 5th 05, 09:59 PM
 
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Default Polarity of 2SC1970 and 2SC1971

Hi All,

Two RF transistors, 2SC1970 and 2SC1971 are supposed to have BEC
pinouts according to data sheets. However, it seems that such
transistors with BCE pinout also exist; resistors in one circuit caught
on-fire when I plugged a 2SC1971 into a BEC socket (based on data
sheets, I assumed the transistor had BEC pinout). After replacing the
resistors and bending the leads of the transistor, the circuit worked
properly. Yes, the socket was wired correctly for BEC pinout. Has
anyone ever come across the BCE pinout versions of 2SC1970 and/or
2SC1971?

C.W.