A 157 KB PDF dedicated to the 2SD2200, a JIS-coded part whose 2SD prefix marks an NPN low-frequency bipolar transistor. Despite the schematic label in the index, expect datasheet material: rating tables, characteristic graphs and the case drawing. Use it to identify terminals before diode-testing junctions and to make sure a replacement meets or exceeds the original voltage, current and power specifications. Confirm the footprint matches.
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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