Electronics Forum | Tue Oct 18 14:24:25 EDT 2005 | Don Swenson - Honeywell
Are there any studies that document the benefits of positive etchback? Does positive etchback, particularly plasma, improve PWB reliability?
Electronics Forum | Wed Oct 19 07:44:33 EDT 2005 | davef
When a hole is drilled during board fabrication, it can transfer resin from the base material (eg, FR4 core or prepreg) to cover the exposed edge of conductive material in the wall of a drilled hole. This is called resin smear. Etchback is a control
Electronics Forum | Mon Aug 12 18:45:31 EDT 2002 | russ
Don't be too sure that it is not your supplier! I have just gone through a similar problem and finally traced it back to PCB design which made the fab not very manufacturable except at a high end shop. What are the specifics of the board? 5mil trace
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