My heroic efforts for X7R bypassing/decoupling. - diyAudio
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Old 30th March 2005, 07:58 AM   #1
IVX is offline IVX  Russian Federation
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Smile My heroic efforts for X7R bypassing/decoupling.

I've measured several types of elcaps at the current= 1A (~30nS falling edge)square wave for ESR&ESL evaluation. My choice was Hitachi HU3 22x30 1000u/100V=45mOhm 8nHn, maybe 8nHn aren't exact value, but others gave around 12-15 nHn. Simulation with additional 10uF (ideal) show almost null ringing, so I have concentrated all my patience and taken 200 pieces KX7RCERCAP 0.22/50V 0805.
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Old 30th March 2005, 08:25 AM   #2
subwo1 is offline subwo1  United States
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Hello Ivan, so it seems more economical to parallel some cheaper capacitors than to use a single high end one. The performance can be similar. Best Regards.
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Old 30th March 2005, 08:36 AM   #3
IVX is offline IVX  Russian Federation
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Yeah, if the time isn't money yet However 200 pcs 0805 not so easy way at least.. Next time i'll just cut the pins of the hole through X7R 4.7uF caps etc.
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