Help me identify this component: test results identify it as a diode. I believe the manufacturer is Vishay, but I can't find anything when I search for it. There is a label placed on the component: ".1 J 50-".

enter image description here

Any ideas?

Thanks in advance.

  • \$\begingroup\$ I see three components... \$\endgroup\$
    – PlasmaHH
    Aug 8, 2018 at 12:01
  • \$\begingroup\$ I'd guess the blue one \$\endgroup\$ Aug 8, 2018 at 12:21
  • \$\begingroup\$ Yes it's the blue one. \$\endgroup\$ Aug 8, 2018 at 13:20
  • 1
    \$\begingroup\$ A capacitor comes to mind. Can you follow the traces and see where they lead? \$\endgroup\$
    – winny
    Aug 8, 2018 at 13:58
  • \$\begingroup\$ If the IC reads 7612 as I think it doesm it looks like a capacitor connected to V+ and V- with a value of 0.1uF. Have never seen such 4 pad smd capacitors before though, so not sure. \$\endgroup\$
    – Remco Vink
    Aug 8, 2018 at 14:01

1 Answer 1


My guess is its a 50V 0.1uF capacitor (not tantalum or electrolytic, since there are no polarization markings).

The J would denote 5% tolerance of the cap.

With no polarization markings it is not a diode or a polarized cap

I couldn't find a company marking or any other 'blue' capacitors, so I'm a little lost as to where this was sourced from.

Desolder the part from the board and measure it with a 'voltmeter' for impedance and do a capacitance test on it.


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