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Ask the Experts

September 18, 2006 - Updated
July 4, 2007 - Originally Posted

Wave soldering problems on boards coated with OSP

Over the past several months we have experienced intermittent problems with wave solder voids on PCBs coated with OSP. We suspect variation in the OSP application process, or oxidation of the surface due to insufficient or degraded OSP. Is there a method by which the OSP can be measured or validated to ensure consistent solderability? What is the preferred method for specifying OSP quality?

T.V.

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