Good Day To All,

One of our customers has asked us to look at changing the finish on a flex
circuit we manufacture from ENIG to Immersion Silver. The circuit is complex
and requires that we laminate on metal stiffeners after the immersion
silver. This would require a full cure cycle of approx. 375F for 1.25 hours
under pressure. The circuit would then have to undergo an approx. 6 hour
bake before assembly. Assembly requires 2 reflows. My question is will the
silver still solder. This is a Class 3 product and we are loading BGA's.
Thanks in advance. Steve Kelly

 

Steve Kelly

PFC Flexible Circuits Limited

PH: (416) 750-8433

Fax: (416) 750-0016

Cell: (416) 577-8433

 


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