Electronics Forum: laser marking in process fault (Page 1 of 1)

IC marking unclear after pass reflow

Electronics Forum | Fri Mar 28 01:45:10 EDT 2008 | En-Apple

I have problemabout fault reject rate at AOI very high, due to inspection letter or marking on IC body. It have uncleary. When I check at raw mat'l of IC it no problem but after pass reflow process it show marking not clear ( Laser marking type). Ple

IC marking unclear after pass reflow

Electronics Forum | Tue Apr 01 09:46:26 EDT 2008 | patsama_n

Thank you for kindness advice. From the result of IC after pass the reflow process. The color of letter will change to similar color of material compound of IC. Then when we inspection by AOI machine, we have many problem about high fault reject rate

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