Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Charles Stringer

#12562

Alternatives to device bake out | 19 February, 1999

Does anybody have any reliable alternatives to device bake out for plastic bodied components. We do not use a whole package at time and therefore have to oven bake the balance before we can use them. I have come accross dry nitrogen storage chambers from my past life with thick film hybrids, but how can you tell if the product is still "dry" Has anybody any experience of vacuum bake out in order to shorten the bake out time

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Dave F

#12563

Re: Alternatives to device bake out | 22 February, 1999

| Does anybody have any reliable alternatives to device bake out for plastic bodied components. We do not use a whole package at time and therefore have to oven bake the balance before we can use them. | I have come accross dry nitrogen storage chambers from my past life with thick film hybrids, but how can you tell if the product is still "dry" | Has anybody any experience of vacuum bake out in order to shorten the bake out time | Charles: Baking components reduces their solderability

Alternatives to baking plastic components, after using part of package are:

1 Dessicant cabinets, that you mentioned. A month or so ago, someone on SMTnet spoke of ECOing refrigerators to be dry boxes. 2 Sealing components in heat sealable bag. Buy big bags and seal along the opening, so that you can keep resealing the same bag.

Many sealed component packs have humidity indicator cards. I can't find a contact for a supplier, at the moment. I'll try to get it you.

TTYL

Dave F

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Dave F

#12564

Re: Alternatives to device bake out | 22 February, 1999

| Does anybody have any reliable alternatives to device bake out for plastic bodied components. We do not use a whole package at time and therefore have to oven bake the balance before we can use them. | I have come accross dry nitrogen storage chambers from my past life with thick film hybrids, but how can you tell if the product is still "dry" | Has anybody any experience of vacuum bake out in order to shorten the bake out time | Charles: I found the sources for humidity indicator cards. I know what you're saying ... These cards are generally �5%. And they're reuseable. TTYL Dave F

Telatemp Corp., 351 S. Raymond Ave Fullerton, CA 92831 714-879-2901 Multisorb 325 Harlem Rd Buffalo, NY 14224-1893 888-767-2368 716-824-8900 fax 4128 Chip Skop Specialty Bags 1746 Crosby Rd Suite 106 Carrollton, TX 75006 800-945-BAGS 972 446-BAGS (2247)

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#12565

Re: Alternatives to device bake out | 16 October, 1999

We have just completed some scientific work on the subject of component bake-out and alternative methods of getting the job done quickly. If you would like a copy, email me at sleech@ix.netcom.com

Stu Leech

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