Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


cracking on Ni/Au plated pad

Vic Lau

#11799

cracking on Ni/Au plated pad | 22 April, 1999

after soldering transistors on a flex circuit (Ni/Au plated), one of the lead lift-up from the pad. under microscope (1,000 X), i find some cracks on the the pad surface. with edx analysis, the surface is mainly nickel. have you ever encounter such probelm? do you know what is the major cause of this defect. thanks for your kind concern

reply »

Boundary Scan

JTAG Live PCB Debug Software