Washing OSP PCB's

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What is the proper storage and shelf life after washing a PC... - Oct 13, 2021 by Larry Kobriger

"We sometimes have to pull the boards off the line ... - Oct 14, 2021 by dontfeedphils

The best shelf life for OSP is run both sides the same day t... - Oct 14, 2021 by Stephen

OSP is there to keep the copper from oxidizing. Once you was... - Oct 14, 2021 by SMTA-64387687 SMTA

Larry Kobriger

#87179

Washing OSP PCB's | 13 October, 2021

What is the proper storage and shelf life after washing a PCB with an OSP finish? We sometimes have to pull the boards off the line and wash the solder paste off the boards.

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dontfeedphils

#87182

Washing OSP PCB's | 14 October, 2021

"We sometimes have to pull the boards off the line and wash the solder paste off the boards."

Unfortunately I can't answer your question with any authority, but I guess my question in return would be why? Can you do something to address the root cause?

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Stephen

#87183

Washing OSP PCB's | 14 October, 2021

The best shelf life for OSP is run both sides the same day they are opened for the first time. They are good for JIT but I didn't know that they were still good after washing.

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SMTA-64387687

#87185

Washing OSP PCB's | 14 October, 2021

OSP is there to keep the copper from oxidizing. Once you wash the board, the copper is exposed. So, you have to either use it right away, or store it in a non-oxygen environment (vacuum/nitrogen).

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