Was browsing Ebay and saw all these great prices on MLCC caps. They are the yellow ones that look like Tayda's. Anybody have any experience with these?
I've bought a few packages off the bay, your results may vary. Of the ones that were a high enough value for me to check with my DMM, there was probably about 10% of them that were way out of spec. Not bad for the price, but if you can't measure them, it's as much a crap shoot as anything.
They look remarably similar to the Tayda ones.
Tayda's are Z5U. Aren't those bad for audio circuits?
Quote from: mremic01 on May 07, 2015, 12:25:20 AM
Tayda's are Z5U. Aren't those bad for audio circuits?
Depends where in the circuit really and how close to their rated voltage they are being used. Temperature is also a factor, but that likely won't come into play on a guitar pedal.
I never use Z5U because they are fairly crappy and only a few cents cheaper than getting a better cap.
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To answer your question Bill, if you don't know what they are, I wouldn't buy them. Some of the cheaper caps have wildly open tolerances. +80/-20% isn't uncommon. That's in addition to the temperature and voltage fluctuations I mentioned above.
A better bet is to check Newark periodically for sales. If you catch them at the right time, you can get good quality MLCC caps for a couple cents a piece.
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Quote from: pickdropper on May 07, 2015, 04:00:40 AM
To answer your question Bill, if you don't know what they are, I wouldn't buy them. Some of the cheaper caps have wildly open tolerances. +80/-20% isn't uncommon. That's in addition to the temperature and voltage fluctuations I mentioned above.
A better bet is to check Newark periodically for sales. If you catch them at the right time, you can get good quality MLCC caps for a couple cents a piece.
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I checked Newark for x7r's and they were expensive. Is there a cheaper brand etc. that you look for?
Quote from: billstein on May 07, 2015, 04:24:12 PM
Quote from: pickdropper on May 07, 2015, 04:00:40 AM
To answer your question Bill, if you don't know what they are, I wouldn't buy them. Some of the cheaper caps have wildly open tolerances. +80/-20% isn't uncommon. That's in addition to the temperature and voltage fluctuations I mentioned above.
A better bet is to check Newark periodically for sales. If you catch them at the right time, you can get good quality MLCC caps for a couple cents a piece.
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I checked Newark for x7r's and they were expensive. Is there a cheaper brand etc. that you look for?
Not really, you just have to catch them when they are on sale. Usually their MultiComp (house brand) are priced reasonably.
But I also don't have a problem paying 10-20 cents for a cap if I am buying in small quantities (although I usually buy 100 or so as the price breaks get better). It's a marginal increase in the cost of the pedal and I'd rather use a better quality part. The Tayda ceramics are pretty lousy.
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