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Old 11th March 2005, 08:48 AM   #11
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Originally posted by TunaFish
What does the 40/105/56 and 40/85/56 indicated in capacitor means?
40/105/56 means the capacitor has been tested between -40 C and +105 C for 56 days.
Same with the 40/85/56.
The ISO/IEC have standard procedures, of which the 56 days is one, that enables someone to compare components.
The main parameters that influence capacitor performance are temperature and humidity.
A standard IEC procedure is placing capacitors in a surrounding with prescribed humidity percentage for 56 days at different temperature.
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