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Testing effect of non-clean flux residue on solder joints

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#77287

Testing effect of non-clean flux residue on solder joints | 20 March, 2017

We're currently using no-clean flux (SR-12) in a no-clean manual soldering process.

The brownish flux residue impedes direct visual inspection of the solder joints. Therefore, we're forced to clean the residue off.

(1) Is there testing we can do (environmental stress chambers) with which we can see the long-term effects of flux residue on solder joints?

(2) Has anyone else seen this problem with no-clean flux residue and how do you handle it?

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#77293

Testing effect of non-clean flux residue on solder joints | 21 March, 2017

No clean is giving us problem in ICT. Other than that, a coating of flux should remain there to pretect the solder joint from the environment. In general you should not clean NO clean - it is supposed to be there.

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