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dissipation factor of film capacitors

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eem2am

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hello,

how can you tell what is the dissipation factor of these capacitors at 100KHz,?

https://www.farnell.com/datasheets/18677.pdf


...on page 12, the datasheet only says the dissipation factor at 10KHz or 1KHz,....this is not much use since my SMPS switches at 58100Hz.

i wish to use the 330nF, 400V one close up to the power switch loop, so as i don't draw so much ripple current from the electrolytic cap.
 
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