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Old 12th March 2005, 07:30 PM   #1
morfeas is offline morfeas  Greece
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Default Sprague capasitor id

Could someone please id the following capasitor type? PIO, Polyprop ...

Got my hands on a few of them. Missed a few hundrend more thou.
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Old 12th March 2005, 07:31 PM   #2
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One more
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Old 12th March 2005, 07:46 PM   #3
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http://www.cypress.ne.jp/kouchi/cap.htm
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Old 12th March 2005, 07:52 PM   #4
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I think it means 1µF 300VDC
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Old 12th March 2005, 09:29 PM   #5
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The threaded end makes me think is a feedthrough capacitor. Measure the resistance (yes resistance, not capacitance) across the two ends. If it remains basically zero then it is a feedthrough type and the 1uF is between the conductor that runs from one end to the other and the case. It is used to filter RF from a signal passing to or from a shielding enclosure.

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Old 12th March 2005, 09:39 PM   #6
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Casey knows his business.
I use such feedthrough filter caps on my cars, shaffner's.
Look identical, except for the brand.
Shaffner's are worth $0.50 here.
A lot of them are used in the telecom field.
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Old 13th March 2005, 09:48 AM   #7
morfeas is offline morfeas  Greece
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Measurments

Pin1 2 Pin2 1uF/Open
Pin1 2 Case 0uF/Open
Pin2 2 Case 0uF/Open

The question is what type/material is it? Polyprop, PIO, Teflon?
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Old 13th March 2005, 11:44 AM   #8
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i am not an expert on Sprague, but my guess is that these caps do not differ that much between manufacturers.

A Siemens/Epcos feedthrough has a metalised polypropylene di-electric.
Such caps are made up till 4.7uF.
See www.epcos.com keyword B85121

Could also be oil impregnated paper.
Sprague is Vishay owned, you could check www.vishay.com
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