Im trying to repair a diagnostic interface, I've got a burnt chip and cant find any board data.

Multimeter: diode mode in one direction reading : 1380, in other way 820 test in resistance ( 2000 ohm setting) I get 1510; in other 1430 in other direction.

enter image description here

enter image description here In need of identifying silver/Gray SMD part with writing on it "24"

No luck finding it.


1 Answer 1


Probably a Vishay Si9241A or compatible bus transceiver. An exposed part that could be subject to damage.

The other part may be a 3.6V zener part number PDZ3.6B. Part marking appears to be Z4. It might be intended to produce ~3.3V from 5V with ~2mA zener current.

  • \$\begingroup\$ Not that component, the component that looks like a diode, in gray/ silver color that has writing |24^ on it. and it's inline with 681 \$\endgroup\$ Mar 3, 2021 at 19:33
  • \$\begingroup\$ Honestly, simply genius, I would have never thought it was Z instead of 2. This is very useful. Thank you very much! \$\endgroup\$ Mar 3, 2021 at 20:13

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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