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cold solder after drop test

jj

#26784

cold solder after drop test | 6 January, 2004

Hi, Any idea what's the possible causes of cold solder after drop test?

Thanks JJ

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#26785

cold solder after drop test | 7 January, 2004

The cause of cold solder after a drop test => Cold solder prior to properly performing a well designed drop test.

Actually, "cold solder" means different things to different people. Two dull solder connection conditions are: * "Disturbed" solder joint: a solder joint that has an "angular faceted" appearance that is caused by the solder joint being moved as it solidified. * "Grainy" solder joint: a solder joint that has a rough, gritty appearance that is caused by the solder microstructure giving the solder joint surface relief.

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