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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Contamination of components

#5360

Contamination of components | 26 February, 2001

With allocation of components becoming a bigger and bigger problem, our company has had to purchase components from brokers. Because of this, I've found an increase of component contamination. What I mean is I have found problems with oxidation of the components leads which results in poor solderability. Is anyone else having these issues? How are you addressing this issue?

Thanks,

Larry

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#5371

Contamination of components | 26 February, 2001

We feel that we get more than our share of crusty components, but we just smile because we�re so happy ["Happy, happy" as Emeril says] that we use a nice and hot, aqueous flux. What kind of flux do you use?

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#5378

Contamination of components | 27 February, 2001

Dave,

We use water soluble flux. We currently do not do a solderability test on incoming components, I'm thinking that this is going to be a "must do" with these components.

Larry

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#5380

Contamination of components | 27 February, 2001

Bud: Theoretically, I agree with you in-bound parts should meet your solderability requirements.

Unforunately in real life, it aint gunna work, because if your buyer can't get you parts now, well 'cept the crusty ones that you're seeing, can you imagine what they'll do to you, if start rejecting them 'cause they don't solder nice?

Now, if this corrosion is stuff you can scrape off with a butter knife, I agree on rejecting the part, but if it's just tough oxidation stuff, pucker-up.

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CAL

#5465

Contamination of components | 3 March, 2001

We test Parts and Components to IPC J-std-002/003. We also use a wetting Balance tester to determine solderability. We also test with SERA. We use ROSA to electrochemically revert the components back to their original state. Need more info ... email me cdriscoll@aci-corp.org

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Fluid Dispense Pump Integration

Essemtec Spider SMT Fluid Dispenser