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RECERTIFICATION OF NOCLEAN FLUX

Rick Grant

#20109

RECERTIFICATION OF NOCLEAN FLUX | 29 May, 2002

UP-78 FLUX PASTE RECERTIFICATION. We use small amounts of this flux and would like to know what is the best method of recertification when then shelf life has expiried?

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#20118

RECERTIFICATION OF NOCLEAN FLUX | 29 May, 2002

If you have a specification for the flux, you can retest all the parameters to see if they still comply. Check with Alpha to see if they have a recommendation. Our adhesive suppliers recommend running a lapshear to recertify, so the flux manufacturer may have a suggestion.

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#20135

RECERTIFICATION OF NOCLEAN FLUX | 29 May, 2002

Retesting is reasonable, but using paste the has an expired shelf life is dicey biz. * Use fresh paste * Buy in small containers

Sure it's expensive to toss, but the price you pay in rework and defective product may be higher.

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Hussman69

#20147

RECERTIFICATION OF NOCLEAN FLUX | 30 May, 2002

I bet your vendor would take it back and replace it for free. Never hurts to ask.

Otherwise toss and use fresh - why chance a career on it. Plus, Murphy's law says if you do use it, you will have unexplained anomalies that will force you to question the old flux.

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 Reflow System

Plasma prior Conformal Coating