Datasheet for the 1T412 transistor, 59.8 KB in PDF format and stored with schematics. The 1T prefix places it among Soviet germanium transistors. Restorers and repair technicians use this kind of sheet to read the lead order, maximum ratings, frequency and gain parameters when a part in old equipment fails. Compare the replacement candidate with these values rather than relying on number similarity alone, and check the case outline in the document against the transistor fitted on the board.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
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