ceramic chip capacitor leakage?

Anyone have a sense for what the leakage range for ceramic chip capacitors (0201 - 0603 packages) is?

In particular I'm looking for a 10nf 25-50v ceramic cap in let's say an 0402 package with about a +/-10% tolerance or better.

Any idea?

Thanks, Dave.

Reply to
dave94024
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Very little, in the nA range IME. But you need to consult the data sheet which lists the maximum.

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Regards, Joerg

http://www.analogconsultants.com
Reply to
Joerg

That was my opinion as well, but I haven't found a datasheet for a ceramic chip cap with leakage information in it. Do you have one? Or know where I could find one?

Thanks, Dave.

Reply to
dave94024

Check the data sheets and get back to us if you don't understand the specs. It is too insignificant to matter in most (not all) cases.

Best regards, Spehro Pefhany

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"it\'s the network..."                          "The Journey is the reward"
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Reply to
Spehro Pefhany

For example, the following are datasheets for ceramic caps.

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I couldn't find anything relevant to leakage in the first two datasheets. The third datasheet had some numbers for the insulation resistance, is this equivalent to Rp (parallel leakage resistance) for the part? If so, we are looking at something on the order of 1na which works for my application.

Thanks, Dave.

Reply to
dave94024

Insulation resistance is basically the DC leakage resistance. Here's a link to some additional info:

http://72.14.253.104/search?q=cache:L-1l-wMrAdgJ:

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Chuck

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Reply to
chuck

Chuck,

Perfect, that's just what I was looking for and the document is great too.

Thanks a bunch, Dave.

Reply to
dave94024

TDK says 10G minimum after 60s at rated voltage, at least for these parts:

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Yes. The AVX spec is the lesser of 100G or 1000M-uF. Since you have

0.01uF, the two numbers are the same. Above 10n the dielectric leakage appears to dominate, below it's the 'package' leakage is my interpretation of the specs.

Best regards, Spehro Pefhany

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Reply to
Spehro Pefhany

If it's that critical, I suspect the leakage along the surface of the board will be greater.

Reply to
Paul Burke

Ok, Dave, I also happened to need resistance info on a 10uF/4V ceramic cap in a design today because this design uses it in a timing circuit. Here is its data sheet and the info is at the top of page 4:

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Regards, Joerg

http://www.analogconsultants.com
Reply to
Joerg

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