This 244 KB PDF covers the 2SD2075A; the trailing A marks a variant of the base 2SD2075 type, though the name does not say how it differs. Following JIS conventions, 2SD refers to an NPN bipolar transistor designed for low-frequency work. Technicians consult a sheet like this for pinout, package dimensions and maximum ratings when replacing a failed device. Do not assume the plain and A versions are interchangeable without comparing their voltage and current limits in the tables.
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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