Greetings fellow Technoids,

An interesting debacle arose, and I'm unsure if there is a solution.

Dpak components on side 1 solder fine, <25% voids, 100% edge wetting.

On 2nd pass (top side, big heavy components) the Dpaks on side 1 outgas and exceed 25% (not a spec, just a target) but violate edge wetting (S/B 100%) as the outgas tends to blow out the edge somewhere.

Any suggestion on how to eliminate this phenomena? Parts cannot be relocated due to aerospace re-qual cost.

Thanks in advance!


Ed Popielarski
Engineering Manager

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