On May 7, 6:53=A0am, DaveC wrote: > Today I ordered electrolytic caps. It was frustrating. I had planned to get > the best low-ESR replacements for all the caps in some switching power > supplies. I discovered how limited any one manufacturer's low-ESR catalog is. > Many of what I needed (none of which seem to me to be esoteric values) were > not available. A couple of times I had to leave a particular manufacturer's > catalog altogether to find a value. >
I buy the replacement parts at a Hollywood dub house. Last year I bought 14.000 'lytics , 10,000 installed by 3 of us. My first choice in Panasonic FM but the selection isn't as wide as the second choice of FC caps. If I run into a physical size problem Nichicon PW series often helps. For surface mount first choice is Panasonic FK and sometimes HC series. If you're doing this a lot like we are, Metcal soldering irons are HIGHLY recommended. The STTC-126 tip (700 F 30 degree bent tip) is really good for clearing stubborn holes - usually ground planes with lousy thermal reliefs. A lifted pad is a very rare event with a good soldering iron.
100uf 25V (most common value for us) cost 20 cents in 1's 10.28 / 100 but are only $57.54 / 1000. I try for 1000s whenever possible.G=B2