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Old 05-06-2023, 08:41 AM   #1
Electronic Santa
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Default What type of cap is this?

It's super small and there is no writing. There is also no schematic where it came off of.

It's for an class d audio amp board out of a Chinese made Bluetooth speaker

I think it's a zener but how do I know what value!?!?!
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Old 05-06-2023, 09:16 AM   #2
stj
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Default Re: What type of cap is this?

it's a diode.
probably not a zener because it only has a black band.
probably an FDLL4148
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Old 06-03-2023, 02:53 PM   #3
Mallen
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Default Re: What type of cap is this?

First thing Id do is to check it with a meter. It should act like a diode. Low resistance one way, high the other. If it acts good, then I wouldn't suspect it without further evidence. Does it have any markings at all on it? Like on the side we cant see?
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Old 06-03-2023, 03:00 PM   #4
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Default Re: What type of cap is this?

you need a test circuit if it isnt shorted or open ..or simply put it back in and check voltage across it .
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