New SMT Equipment: prebake (1)

PCB repair and rework

New Equipment | Rework & Repair Equipment

Allgood Technology is equipped with a range of tools to rework and repair printed circuit assemblies to IPC-A-610 or your own company standards. Major Plant List:     Metcal MFR-1351 Desoldering Station for through hole desoldering.     Le

Allgood Technology ltd

Electronics Forum: prebake (90)

Gold surface contam after prebake 150C for 3 hrs

Electronics Forum | Tue Apr 06 11:17:01 EDT 2004 | ccl

hi, i encounter gold surface contam issue on wire bonding ring after prebake at 150 C for 3 hrs, tis cause wire bonding non stick issue. the contam seem begin at the solder mask area toward center of the bonding ring, but is not consistance.

Gold surface contam after prebake 150C for 3 hrs

Electronics Forum | Tue Apr 06 17:01:24 EDT 2004 | davef

It doesn't make sense that contamination would form on your gold pads after prebake of 150C for 3 hrs. The contamination must have been there prior to the bake. Your description makes us think of solder mask bleed. Tell us about: * Solder mask * S


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