I have a small electronic board from a hand held snow plow controller. The diode is cracked on one.

I would like to replace this component but want to make sure I get the correct one from digikey. The hand controllers are very expensive and I would like to at least attempt to fix them before buying a new one.

Cracked_Diode enter image description here

These other ones I just want to identify because I need additional ones that fell of the circuit board and are lost now.



  • \$\begingroup\$ Can you zoom out a little bit on the first photo? If the designator for the diode is Z1, it could very well be a Zener diode, but no guarantee. \$\endgroup\$
    – winny
    Mar 3 at 18:36
  • \$\begingroup\$ Added a second image from another angle. \$\endgroup\$
    – Catalyph
    Mar 3 at 18:39
  • \$\begingroup\$ Thank you. Some eCAD software uses Z designator for all diodes by default, but most don’t. The logo on it looks like ST. \$\endgroup\$
    – winny
    Mar 3 at 18:41
  • \$\begingroup\$ your right! STMicroelectronics \$\endgroup\$
    – Catalyph
    Mar 3 at 18:42
  • \$\begingroup\$ Others look like General Semiconductor and Diodes Inc logos. \$\endgroup\$
    – rdtsc
    Mar 3 at 18:44

1 Answer 1


The 1st diode you already found yourself: SMBJ15CA from STMicroelectronics.

The 2nd diode is from a company formerly known as General Semiconductor.
enter image description here

According to Wikipedia Vishay Intertechnology has acquired General Semiconductor in 2001.

So the BM/2B could be SMBJ15A from Vishay Intertechnology.

The 3rd diode: S1GB-13-F from Diodes Incorporated.

Datasheet: https://www.diodes.com/assets/Datasheets/ds16003.pdf

enter image description here


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