The 2SB1589 PNP transistor is described in this 40.1 KB PDF datasheet, with an _E suffix that most likely points to the English edition. Under the Japanese JIS scheme the 2SB prefix covers PNP bipolar transistors for low-frequency work; the name gives no maker or package. Repair technicians use it to confirm lead assignment and electrical limits when a device is suspected shorted, and to choose a compatible substitute. Check that polarity, package outline and gain class all agree with the original part.
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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