Small 39.2 KB PDF datasheet for the 2SA1797, a PNP bipolar transistor going by the JIS 2SA naming convention. Any PDF reader opens it, and it should list ratings, gain classification and the package outline with lead assignment. When a stage on a board fails, this sheet helps confirm which terminal is which before diode-mode measurements, and it gives the limits needed to choose a suitable replacement. Verify that the part marking and footprint on the PCB agree with the document.
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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