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Found 2 free book(s)Interconnection Reliability of HDI Printed Wiring Boards
www.pwbcorp.comS07-3-2 Figure 1 – Manufacturing Process Body Connection Reliability One cause of long-term failure that may occur in printed wiring boards is an open circuit resulting from a crack of PTH.
IPC-TM-650 TEST METHODS MANUAL
www.pwbcorp.com1 Scope This test measures changes in resistance of plated-through hole barrels and internal layer connections as holes are subjected to thermal cycling. Thermal cycling is pro-duced by the application of a current through a specific cou-