Covering the 2SD1213 transistor, this PDF of 116 KB is indexed under the schematic type. The JIS 2SD prefix designates an NPN bipolar transistor for low-frequency applications; the name carries no other details. Typical datasheet content includes absolute maximum ratings, characteristic tables and curves, hFE classification and the package outline. Use it to verify a suspect part with a meter, read its pin assignment and compare specifications against possible substitutes, keeping voltage and power margins at least equal.
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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