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| Ceramic caps from China |
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| rstofer:
Here is a page from DigiKey - note that one category of tolerance is 0,+100% https://www.digikey.com/products/en/capacitors/ceramic-capacitors/60 It could be that all of your capacitors are within that tolerance. The question is: what was the specified tolerance? The assortment only costs $1.40 USD so I wouldn't have high expectations. |
| wraper:
--- Quote from: rstofer on August 18, 2018, 07:33:45 pm ---Here is a page from DigiKey - note that one category of tolerance is 0,+100% https://www.digikey.com/products/en/capacitors/ceramic-capacitors/60 It could be that all of your capacitors are within that tolerance. The question is: what was the specified tolerance? The assortment only costs $1.40 USD so I wouldn't have high expectations. --- End quote --- I don't think it's possible to get 1-2n low voltage capacitors with super unstable Y5V, Z5U (type 3) ceramic. But it's quiet easy to check. Just hold a capacitor with fingers while measuring and capacitance should go down a lot due to heat transfer from fingers. Or heat some other way. |
| mzzj:
--- Quote from: wraper on August 18, 2018, 08:02:57 pm --- I don't think it's possible to get 1-2n low voltage capacitors with super unstable Y5V, Z5U (type 3) ceramic. But it's quiet easy to check. Just hold a capacitor with fingers while measuring and capacitance should go down a lot due to heat transfer from fingers. Or heat some other way. --- End quote --- Just hold my beer: ;D https://www.digikey.com/products/en/capacitors/ceramic-capacitors/60?k=&pkeyword=&pv14=20&pv14=32&FV=440003%2C44016e%2C44016f%2C440170%2C4401a2%2C440037%2C440006%2C440044%2C440045%2C440007%2C440055%2Cmu1000pF%7C2049%2Cffe0003c%2C380002%2C380014%2C380020&quantity=0&ColumnSort=0&page=1&pageSize=25 |
| wraper:
--- Quote from: mzzj on August 18, 2018, 08:10:57 pm --- --- Quote from: wraper on August 18, 2018, 08:02:57 pm --- I don't think it's possible to get 1-2n low voltage capacitors with super unstable Y5V, Z5U (type 3) ceramic. But it's quiet easy to check. Just hold a capacitor with fingers while measuring and capacitance should go down a lot due to heat transfer from fingers. Or heat some other way. --- End quote --- Just hold my beer: --- End quote --- Only one part number in stock and that junk costs $ 0.30 :o, LOL. +-20%, though. I wonder who buys that junk at such price. |
| bd139:
Just a heads up on shitty ceramics. A few of the C0G's and X7R's I got from even "multicomp" brands were bags of lies. A bag of MLCC's I bought from China were 50% faulty. I only buy Vishay / Murata / Kemet stuff from main line distributors now. Costs a lot more but worth it. |
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