[PCB_FORUM] Re: Finish: Matte tin vs ENIG ?

This is one of those cases that should be brought
before your assembler. They have the most to gain
by you making a choice that is compatible with
their process. If you have not already done so,
I recommend you present the problem to them for
the ideal solution.

Kevin McCowan
Sr. PCB Designer
TSI Telsys

Tom Robinson wrote: 
With LeadFree coming, I'm trying to find out what is the best all around
finish requirement to put on my fab drawing.

My boards have a 50mil pitch BGA. The soic's down to .4mm pitch.

Matte tin, ENIG ?? I imagine Matte tin would be the cheapest.

Also, with the extra heat needed in reflow, will FR4 be ok?

Any help will be appreciated.

tr :)

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