The survey aim is to collect the manufacturer’s recommendations and good tips for capacitors and resistor mounting BEYOND the industry standards. The survey doesn’t aim to provide a complete mounting procedure guidelines as part of specific industrial requirement and standards.
Capacitor and Resistor Manufacturers Public Sources Included in the survey:
Mounting related induced failures are the number one reason (over 55%) for the field application capacitor failure causes according to a EPCI end customer survey – see featured Fig.1.
The capacitor component failures itself represents “just” 33% of the root failure causes. Thus, a careful evaluation of mounting guidelines and follow up in real assembly processes per the component manufacturers’ recommendations shall be considered as a critical characteristic. This mounting guide survey report summarizes recommendations of ESCC QPL capacitor and resistor technology (including both QPL and other commercial manufacturers) and present some recommendations, tip & tricks for the best mounting practice published by component manufacturers. Space requirements, as specified in ECSS standards, are not included in this guide.
Board mounting soldering processes itself shall be adapted to contradictory requirements. On one hand, a certain minimum time in the molten solder to get a good wetting is needed and on the other hand, as short exposure to the molten solder as possible to minimize any risk of damage on component. The following items to be considered for selection of the proper mounting technique and its parameters: