Electronic – Identify sot-23 smd component and possible replacement

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I need help identifying this rusty smd component (sot-23 3 pins).
It comes from an early 90's sony discman.

Thank you!

Rusty component

Best Answer

SANYO 2SD1048. http://www.datasheetcatalog.com/datasheets_pdf/2/S/B/8/2SB815.shtml

It’s an PNP “audio” transistor. 20 V and 0.7 A rated.

Given the 0.7 A rating which is a bit more than small signal standard, was it located close to the speaker/headphones output?

X denotes 2SD1048. 7 denotes a hFE between 300 and 600.

You can most probably replace it with any PNP with similar hFE and current capability.

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