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Old 18th February 2008, 10:58 PM   #1
phrarod is offline phrarod  United States
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Default low impedance cap series question

I'm looking at either Pansonic FC low impedance series which I know is popular and the United Chemicon LXZ very low impedance series.

Are there options as which may be better?
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Old 18th February 2008, 11:47 PM   #2
BWRX is offline BWRX  United States
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Depending on the voltage rating and capacitance values you need you may want to have a look at Panasonic FM and UC KZE as well.
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Old 18th February 2008, 11:58 PM   #3
phrarod is offline phrarod  United States
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Voltages are 680uF 25v and 47uF 50v
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Old 19th February 2008, 02:01 AM   #4
poobah is offline poobah  United States
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What is your application?

In many applications, the golden path to low ESR is parallelling caps...
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Old 19th February 2008, 02:33 AM   #5
phrarod is offline phrarod  United States
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This will be in a dc supply.
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Old 19th February 2008, 03:00 AM   #6
poobah is offline poobah  United States
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Linear or switcher?

In smoothing cap apps, it is often a toss up between ESR and ESL as the culprits.

In either case. Long tall skinny caps, as opposed to short squatty ones, are generally lower in both.

In linear apps... paralleling a ceramic or film cap can be far more practical than finding the ideal lytic...



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Old 19th February 2008, 03:01 AM   #7
phrarod is offline phrarod  United States
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Its a smps based device.
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