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Old 17th October 2019, 12:56 PM   #21
jackinnj is offline jackinnj  United States
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polypropylene capacitors
Quote:
Originally Posted by asuslover View Post
Polyphenylene Sulfide (PPS) are very good , but not cheap.
WIMA SMD-PPS are in the range of $2-$3 for the larger values. Mostly in 5040 (12.7x10.1x0.7mm) or 6054 (15.3x13.7x0.7mm) size. They can easily be stacked.
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Old 17th October 2019, 01:51 PM   #22
mchambin is online now mchambin  France
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Quote:
Originally Posted by jackinnj View Post
WIMA SMD-PPS are in the range of $2-$3 for the larger values. Mostly in 5040 (12.7x10.1x0.7mm) or 6054 (15.3x13.7x0.7mm) size. They can easily be stacked.
WIMA SMP-PPS: From 0.01μF to 2.2μF.
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Transistor junction temperature is not transistor case temperature.

Last edited by mchambin; 17th October 2019 at 01:53 PM.
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Old 17th October 2019, 01:53 PM   #23
diyralf is offline diyralf
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WIMA has all the desired values for sale in the smallest possible size. The quality is world class. Film capacitors Made in Germany. - WIMA – Competence in Capacitors
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Old 17th October 2019, 02:19 PM   #24
asuslover is offline asuslover  Romania
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SMR15475J50B14L16.5CBULK KEMET | Capacitors | DigiKey
4.7uf pps
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Old 17th October 2019, 02:28 PM   #25
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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Polyester Film Capacitors | RS Components
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Old 17th October 2019, 02:45 PM   #26
jackinnj is offline jackinnj  United States
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polypropylene capacitors
Anyone need 10u/50V Sprague Polycarbonate:
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Old 17th October 2019, 03:31 PM   #27
RickTH is offline RickTH
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While looking at the posted links to Wima's MKP and MKS , small size (= low voltages) isn't that great . I didn't expect that :
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Old 17th October 2019, 05:51 PM   #28
mchambin is online now mchambin  France
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Are not great at what ?
What is Urms and V ?
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Old 17th October 2019, 05:59 PM   #29
29285 is offline 29285  Europe
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Quote:
Originally Posted by mchambin View Post
Are not great at what ?
What is Urms and V ?
These plots depict allowed AC-voltage vs AC-frequency, dependent on nominal DC blocking voltage. This is interesting for resonant circuits where significant AC-voltage drop across the cap increases dielectric losses. For audio application with some mV AC across the coupling caps this is totally irrelevant.
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Old 18th October 2019, 12:15 AM   #30
Mark Tillotson is offline Mark Tillotson
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U is an alternate symbol for a voltage, V is the symbol for volts (the unit).
(Just like we use I for a current, whereas A or amp is the unit).


In physics U is used to distinguish voltage from velocity, I believe. The same issue would
exist is A meant current (as it also means area). When describing electric motors etc its important not to confuse velocity with voltage!
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