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July 2018

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Subject:
Re: capacitor measurement
From:
"Stadem, Richard D" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Stadem, Richard D
Date:
Wed, 18 Jul 2018 12:49:20 +0000
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Check to see if the capacitors are counterfeit.



-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey

Sent: Wednesday, July 18, 2018 7:00 AM

To: [log in to unmask]

Subject: [TN] capacitor measurement



I got pulled into a Receiving Inspection problem. Our test instrument, an

old HP 4192A impedance meter, and a newer Instek 6020 tell us that our X5R

capacitors are out of spec.

A 100uF, 10%, 6.3V capacitor measures between 25% and 30% below the nominal

value.  The instruments have Kelvin probes and are zero calibrated at

frequrency, 120Hz the test waveform is 500mV rms.

Does anyone have any advise?

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