On 10/19/2016 07:23 PM, Eric Smith wrote:
I prefer NOT to use ENIG, as I find HASL tin-lead better for hand
assembly, though the lead is a problem due to RoHS regulations in much
of the world (but not in USA). I haven't tried HASL lead-free.
I did **ONE** board with some kind of gold flash that a PCB house
recommended.
If the solder on the board didn't flow, it was a colossal disaster. You
had to lift the pin, scrape the black crud down to bare copper and
re-tin, then solder the lead back down.
Since then, I have used pure tin HASL, and had little trouble.
Jon
