I'm trying to identify the SMD components on a contactor control circuit. They are from General Semiconductors and have the labels: YR103, WX104, and RZ102. I think they are diodes, but I'm not sure what kind. Can I get some help with identifying them?



Here's the marking guide for Vishay's power diode division, formerly General Semiconductor:

Vishay PDD marking guide

If your parts are General Semi diodes you should be able to figure out what they are from there, based on what kind of package they are in. (SMA, D-Pak, etc.)

  • \$\begingroup\$ Thanks for the link, I think I'm getting a little closer. From the marking guide, these seem to be TVS diodes. Now to determine the type codes... \$\endgroup\$ – user2218339 Aug 12 '14 at 18:37
  • \$\begingroup\$ I'm curious if this chart applies to my diodes? s-manuals.com/pdf/datasheet/s/m/smaj_littelfuse.pdf (page 2) \$\endgroup\$ – user2218339 Aug 12 '14 at 18:51
  • \$\begingroup\$ Nevermind, I found the correct datasheet here: farnell.com/datasheets/548547.pdf I'm gonna select this as the answer, thanks John D! \$\endgroup\$ – user2218339 Aug 12 '14 at 18:57
  • \$\begingroup\$ that link is broken \$\endgroup\$ – don bright Apr 28 '18 at 22:41

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