FROM: James D. Herard ************************************************************** Subject: fab: Solderability Ref: Solderability I caution against too many hasl cycles. Besides the fact that the board will begin to look less pleasant (brown/burned), each thermal cycle does reduce the life, and most boards are not intended for more than a certain number of solder cycles in their entire life time, including reworks. We perform a similar screen and look test. I'd recommend you perform some microsections to look grain structure and intermetalics. if in extreme doubt, I'd recommend you solder a board up and put it on thermal cycling test or HAST. Good Luck Jim James Herard x77026 KBLE/014-3 Quality Engineer *************************************************************** ********* Get it While you Can ********************* *************************************************************** *** Forwarding note from SMTP4 --IINUS1 10/10/96 19:38 ***