Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


lead free finish

Views: 747

#57903

lead free finish | 29 January, 2009

Hello !

Still having problems, but getting there with your help :) I want you to look at this pictures 94427924@N00/3236723528/" target="_blank">http://www.flickr.com/photos/94427924@N00/3236723528/ and 94427924@N00/3235878901/" target="_blank">http://www.flickr.com/photos/94427924@N00/3235878901/ do you guys think these is a finish problem ?

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#57905

lead free finish | 29 January, 2009

Looks like a time/temperature problem to me. However, there are a lot of solder fines surrounding the pads in one photo that go beyond what I'd expect from inadequate TAL.

Is it possible that the board was misprinted and not completely cleaned, or maybe not completely dried after a wash?

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