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Corrosion of SA1388-1 diodes

Conference ·
OSTI ID:238346
;  [1]; ; ;  [2]
  1. Allied-Signal, Inc., Kansas City, MO (United States)
  2. Sandia National Labs., Albuquerque, NM (United States)

After 5 y storage at Allied Signal, a subassembly with SA1388-1 diodes failed testing and the cause was an unacceptable current leak rate in one of the diodes. This was traced to a CuS deposit in a single production lot of diodes; however only about 0.3% failed the specification. A study was performed to determine the cause and potential long-term significance of this problem. Probable cause was determined to be the P-bearing braze material not being compatible with the Ag immersion plating solution (cyanide-based) and to the storage environment containing sulfur.

Research Organization:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC04-94AL85000
OSTI ID:
238346
Report Number(s):
SAND--96-1236C; CONF-9604104--9; ON: DE96010530
Country of Publication:
United States
Language:
English

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