Meeting:
GLAST Preliminary Design Review, January 8-11, 2002
Subsystem:
Electrical
RFA Number:
51
Originator:
Fred Huegel, Code 561, 301-286-2286
Response Accepted/
RFA Closed:
_________________
(Originator’s initials)
Specific Request:
Ensure that flight tantalum caps receive 100% surge current testing and conservative derating to
provide for maximum protection against short circuit failures in the tracker electronics.
Supporting Rational:
A large number of tantalum capacitors are used in the tracker electronics. A short in any of them
can bring down an entire tracker stack.
Response:
Conservative derating has been adopted and we expect to procure only tantalum caps which have
been surge current tested. If we are unable to procure sufficient number of tested parts, then we
will complete the testing ourselves in accordance with MIL-PRF-55365.