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enter image description here

I need to replace this capacitor but don't know exactly its model and where to find it.

Can someone help me with this?

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2 Answers 2

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It is 100nF (100000pF = 104). +/-20% tolerance

It needs to be rated for adequate voltage for your circuit.

It’s probably a junky Z5U or similar, but you can replace it with a better part such an X7R dielectric capacitor.

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  • \$\begingroup\$ Do have a part number \$\endgroup\$ Commented Sep 28 at 11:27
  • \$\begingroup\$ @razaquatahmed It's not possible to know the exact part number from the markings you've shown. There will be many options from many different manufacturers, you'll have to find one that suits your needs. Pick a distributor and use their parametric search to find one that suits your required specifications (e.g. Mouser, Digikey, Farnell, etc) \$\endgroup\$ Commented Sep 28 at 11:38
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    \$\begingroup\$ You can find part numbers for similar part in this answer, but do verify the voltage etc. \$\endgroup\$ Commented Sep 28 at 15:09
  • \$\begingroup\$ @razaquatahmed Depending on how critical it is, you may be able to get away by replacing it with almost any 100nF 50V ceramic capacitor. \$\endgroup\$ Commented Oct 24 at 9:52
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If this was a decoupling capacitor, then the circuit should work fine with it missing. So if the circuit doesn't work at all, then something else is likely broken in addition to this capacitor. Unless you were very lucky.

If the circuit works and you're not well experienced in PCB rework techniques, then I would just leave it be. You may do more damage by replacing it than by not replacing it.

The capacitor can be any 100nF axial ceramic capacitor with similar size. Use the search function on Mouser, DigiKey, Allied Electronics, Newark, ELFA/Distrelec to find some.

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