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lead free joints on ICs, does this look normal?
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Aug 31.2019, 11:59:25
Hi All, I received a batch of boards and solder paste that used on it is Lead Free type.
I noticed that on some ICs solder joint is nice and formed a fillet, however on some other ICs on the same board it is a bit clumpy. The thing is that everything seem to function fine.
I know that lead free solder is known for non-slick appearance but I wanted to ask if this look of a solder joint considered normal? Attached are two pictures, you can see that one one fillets are more pronounces than on the other one.
I can reflow it but if this is normal I rather keep board clean.
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