Hi all
I am trying to find a replacement capacitor for a CapXon KM 100uF 400V. I have read that the big ones really go wrong but it is the last one left on the power supply board that has not been changed and the TV is still playing up so it is getting swapped too.
I have read that I need to find a replacement cap with the same or higher ripple and the same or lower ESR, with all the usual being matched. The ripple is easy to match but the ESR seems to be a challenge.
From the KM datasheet I have got, dissipation factor = 15% (therefore 0.15).
I have put that into the equation from here,
https://forum.digikey.com/t/calculat...-from-tan/2633
This has given me an ESR of 1.99
Looking at the equation on that site, if 'f' and 'C' are the same then if the dissipation factor is matched then then ESR will also be matched.
So I have been trying to find a 100uF 400V cap with a dissipation factor of 0.15 or less but am struggling. The best I have found so far is 0.2
Am I doing this wrong? It is confusing as the CapXon KM is not specifically listed as a low ESR capacitor but more of a high temp general purpose cap.
Thanks
I am trying to find a replacement capacitor for a CapXon KM 100uF 400V. I have read that the big ones really go wrong but it is the last one left on the power supply board that has not been changed and the TV is still playing up so it is getting swapped too.
I have read that I need to find a replacement cap with the same or higher ripple and the same or lower ESR, with all the usual being matched. The ripple is easy to match but the ESR seems to be a challenge.
From the KM datasheet I have got, dissipation factor = 15% (therefore 0.15).
I have put that into the equation from here,
https://forum.digikey.com/t/calculat...-from-tan/2633
This has given me an ESR of 1.99
Looking at the equation on that site, if 'f' and 'C' are the same then if the dissipation factor is matched then then ESR will also be matched.
So I have been trying to find a 100uF 400V cap with a dissipation factor of 0.15 or less but am struggling. The best I have found so far is 0.2
Am I doing this wrong? It is confusing as the CapXon KM is not specifically listed as a low ESR capacitor but more of a high temp general purpose cap.
Thanks
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