Need help finding capacitor

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abicash

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Hi
I am repairing a psu, and there is a capacitor in the output stage which I am trying to find.
Written over it is
IC 3.3K1000MWR
Googling,i found its from Illinois capacitors.but I am not able to find similar part no in their list.
Can someone explain what the nomenclature means and which is the exact part no?
Any help appreciated.
Thanks
 

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Hello,

It looks like a special or old version of these capacitors:
https://www.illinoiscapacitor.com/pdf/seriesDocuments/MWR series.pdf
It is a metallized polyester capacitor. Probably with capacitance 3.3 uF and rated at 1000 VDC.
To check if this is correct:
1) Check capacitor volume and see if it is similar to this one https://www.illinoiscapacitor.com/ic_search/film_products_detail.aspx?icpartnumber=13350
I know it is not a very scientific method for comparisson but capacitor volumes should be similar with same technology, manufacturer, rated votlages and capacitances.
2) Check capacitance using a multimeter
Good luck!
 

Hello

Thanks for replying

The links you gave me are the std one's on their webpage.
The size which i have is quite large, no where comparable to one's they show.

The other link you gave was of an MTR capacitor whereas the one which i have is MWR series.

Best regards
 

If you want exactly the same part I think that the best option would be contacting Illinois Capacitor. This may be a non-standard product or a special series.
 

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