Datasheet PDF of only 13.5 KB for the 2SA684 transistor, marked UTC, which indicates the Unisonic Technologies edition of this part. The 2SA prefix belongs to the JIS scheme and identifies a PNP transistor of the high-frequency class. Short documents like this usually condense the pinout, package type, voltage and current limits and hFE bins into a page or two. Verify that the package and marking on the board correspond to this manufacturer version, since pin order can vary between makers.
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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