Design for Reliability: PCBs - DfR Solutions
Design for Reliability: PCBs - DfR Solutions
Design for Reliability: PCBs - DfR Solutions
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IST – Issues / AwarenessoooooCoupon design is critical (IST can be prone to problems)Need to specify preconditioning (IST or real reflow oven?)Need to specify frequency (every lot, every month, everyquarter)Need to specify maximum temperature (some debate onthe validity of results when above the Tg)o130, 150, and 175C are the most commonNeed to specify requirementsoDifferent markets/organizations specify different times to failure(300, 500, and 1000 cycles are most common)© 2004 - 2007 2010