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Has anyone compared the vishay 1848 dc links with the wimas dc links
The vishay are much cheaper
You have private mail. Look.
FWIW: I am using the vishay DC Links to good effect in my power supply C1 and C2 locations. I don't have the wimas to compare directly as they were out of stock at the time.
What value / voltage / application?
Depending on what you're after, you might also want to check out Panasonic. I've used a few of them and they were a little over 1/3 the price of similar Unlytic (?) cylindrical caps. Not sure how they compare to Vishay or Wima. The free shipping option from Digi-Key made them even more of a deal.
Cost is always a consideration and metalized polypropylene is metalized polypropylene. The 105 o C. rating of the Vishay parts is quite attractive.
I was just staring at that data sheet since I need a coupla µf of storage at 6Kv and the DC Links seem to be the most economical way to go.
It is important to note that if you take advantage of the 105º rating you need to derate the DC value by 30%.
On the flip side, if you operate on the other side of the 85º DC rating that is listed and keep the temp below 70º the DC rating goes up 20%.
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