Electronics > Projects, Designs, and Technical Stuff

Distinguishing ceramic from film capacitors electrically?

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mcovington:
OK, the ones I'm curious about are the blue ones here.  (These are two from the same batch, showing both sides.)  The red one is obviously film.

The blue one looks a lot like a Murata ceramic capacitor, but I can't find "A5K" in the catalogue.

Yansi:
MLCC ceramic.

schmitt trigger:
Agree, MLCC ceramics with leads.

mcovington:
How do you know?

BTW, I just did some testing.  Temperature stability is good (capacitance is down 1% when heated too hot to touch with a hot air gun) and there is no appreciable leakage even at 600 volts.

Can anyone identify the manufacturer?

schmitt trigger:
As mentioned previously, a hunch based on  volumetric efficiency.
But could be wrong.

But if you are willing to sacrifice a device in the name of knowledge, cut one in half.

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