source: KEMET Electronics Corporation; ESA SPCD 2018 Symposium
EPCI e-symposium library article
There is a trend to use the commercial (automotive) grade parts is space applications to reduce the cost of the end electronic device. In Tantalum (Ta) capacitors 50% or higher de-rating (reduced application voltage Vavs. rated voltage Vr) is the way the reliability issues with the commercial parts is addressed. In reality, commercial Ta capacitors with 50% de-rating may be more expensive and less reliable than high reliability or special COTS parts with no/low de-rating, especially, at higher application voltages. Continue to read below.
published by EPCI under approval of ESA SPCD 2018 organizing committee.