Covering the 2SB1321A, an A-suffixed variant of the 2SB1321, this 52.7 KB PDF is indexed as a schematic but is a transistor reference. The trailing E possibly marks an English version. In the JIS scheme, 2SB denotes a PNP transistor intended for low-frequency applications. Technicians use it to read pin order, outline dimensions and maximum ratings, and should confirm the suffix printed on the part, because suffixed variants may not share identical specifications.
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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