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Old 22nd February 2013, 01:46 PM   #1
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Default IC PHC series cap - good low ESR cap?

I'm always on the lookout for good low ESR caps, and ideally non-electrolytic. Can someone comment on IC's PHC series metallized polyprop film caps? I'm specifically thinking for duty as the cap immediately following a series pass regulator. Useful 4, 6.8, and 10 uF sizes at 600V. ESR in the 0.0034 - 0.0065 ohm range.

Newark catalog page featuring the PHCs - mistake for the 10uF, 600V cap's ESR according to the data sheet (follows..)

IC's data sheet for the PHC series caps
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Old 14th March 2013, 09:31 PM   #2
gregdee is offline gregdee  United Kingdom
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Yamamoto uses them in PS ! Good caps in my opinion
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Old 15th March 2013, 01:09 AM   #3
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What's the actual DC voltage of the application? The lowest ESR caps that's not electrolytic are stacked film or ceramic type.
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Old 27th March 2016, 01:58 AM   #4
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They're also good for coupling believe it or not! Our local surplus store has the 4.7uf 400v for $3 each.
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Old 1st April 2016, 01:02 AM   #5
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Originally Posted by CarlyBoy View Post
.. I'm specifically thinking for duty as the cap immediately following a series pass regulator...
That's exactly the purpose I wanted them for when I found them. You don't want a very large cap in that location (defeats the purpose of the regulator), but you want it to recharge as fast as possible. If there's a better cap out there for this purpose I don't know it.
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