A 136 KB PDF containing data for the 2SD2224 NPN transistor, filed in the schematic section. No other detail is given by the name. Under the JIS system 2SD denotes an NPN low-frequency bipolar transistor, frequently marked without the 2S prefix. Technicians use the datasheet to confirm base, collector and emitter positions, collector-emitter voltage, current and dissipation before fitting a replacement, and to judge whether a commonly available equivalent is a safe substitute.
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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