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PCB Assembly Service

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In assembly the bare board is populated with electronic components, called a "printed circuit board assembly" (PCBA). In through-hole technology, the component leads are inserted in holes surrounded by conductive pads; In surface-mount technology (SMT), the component is placed on the PCB so that the pins line up with the conductive pads or lands on the surfaces of the PCB.

Community > Groups > PCB Assembly Service > About OSP and SIR
About OSP and SIR
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Cecil

We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possible that the remnants of the OSP are combining with the flux residue and changing the flux residue SIR characteristic?
Thanks for responses.
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Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

Buck

Excellent work. I am impressed.

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