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Vacuum sealing of MSD components

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#69811

Vacuum sealing of MSD components | 15 July, 2013

One of our aerospace customers "suggested" we vacuum seal MSD components. We bought a vacuum sealer and we are deciding whether or not to vacuum seal ALL MSD parts or just aerospace. Our current method consist of desiccant, a humidity card and a bag sealer.

I would like some input as to how others handle this ?

Thanks

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#69815

Vacuum sealing of MSD components | 15 July, 2013

In previous lives we vacuum sealed all MSD devices. Also a nitrogen chamber can be used for unsealed bags. You can check the J-STD-033 and J-STD-020A for handling of the different levels, bake times etc.

Good Luck!

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#69856

Vacuum sealing of MSD components | 17 July, 2013

We manufacture according to military Class 3 standards and we do not vacuum seal any MSD devices. Your current method of dry packing is sufficient as well as dry cabinet or nitrogen storage.

A light evacuation of air during the dry packing process is allowed to reduce packaging bulk, but full vacuum evacuation is prohibited due to reduced performance of dry packing and the possibility of puncturing the moisture barrier bag (reference J-STD-033C available for free download at jedec.org).

I would go back to your aerospace customer with the JEDEC standard in hand and fight against such a procedure.

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