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

  • \$\begingroup\$ Can you measure any (body) diodes inside it with a multimeter? If yes, what polarity/pinout do you get? This should narrow down the searches. \$\endgroup\$ – winny Apr 5 at 17:25
  • \$\begingroup\$ Hi @winny. There's around 0.7v between lower left and right pin. Also similar voltage between lower left and top pin. 0v between right and top pin. Values measures with a multimeter (diode mode) \$\endgroup\$ – perplex_bcn Apr 5 at 17:50

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.

enter image description here

| improve this answer | |
  • 1
    \$\begingroup\$ Great!. Thank you @winny. \$\endgroup\$ – perplex_bcn Apr 5 at 17:55
  • \$\begingroup\$ @perplex_bcn You are welcome! Feel free to accept my answer when you have verified it was correct. \$\endgroup\$ – winny Apr 5 at 18:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.