The thing I hate the most about OSP, the ugly copper shadows, is similar to what you�re talking about. �Copper shadows� are the copper outline around soldered pads on OSP boards that remain after soldering. They are an artifact of pinching aperture sizes from pads sizes. Yano, you do everything correct; good print, placement, and reflow, nice smooth solder connection, bla bla bla, ladeda; and nobody sees nuttin �cept the stupid ring of copper around the pad.
Huh? Where was I?
Oh. The term we�re looking for is �exposed basis metal�. A-610, 6.5.2 - Exposed Basis Metal, basically says that it�s acceptable, if it�s supposed to be that way. [In your case: it�s supposed to be that way, if that�s the way the board was designed.] This begs the question of: Is it REALLY supposed to be that way or did it just end-up being that way? Which leads us to your main question => Is it OK?
�Is it OK?� => We have no earthly idea if this will shorten the life of your product. We don�t know your product from a shoebox. ;-) Seriously, exposed basis metal could have a variety of effects, depending on the product design and end-use.
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