Regarding OSP PCBA shelf life.This is based on the thread (#73465 PCB SHELF LIFE AFTER FIRST REFLOW | 9 February, 2015)

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Dear All, I have OSP finsh pcb on my production, the pcb ... - Nov 30, 2017 by Ren  

Suppliers have improved the utility and quality of OSP [orga... - Dec 06, 2017 by davef  

Ren

#79407

Regarding OSP PCBA shelf life.This is based on the thread (#73465 PCB SHELF LIFE AFTER FIRST REFLOW | 9 February, 2015) | 30 November, 2017

Dear All,

I have OSP finsh pcb on my production, the pcb thickness is 1.5mm and the product is one sideded pcba.

After reflow process, Is there any specific time frame defined for smt completed OSP finish pcba before going for wave soldering process.

flux used: ALPHA® EF-6808HF

we have set various parameters, In each day we are solving the issue, but cannot able to maintain a constant parameter settings for this product.

Currently we are facing insufficient solder at many regions.

Can anyone help on this issue.

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davef

#79437

Regarding OSP PCBA shelf life.This is based on the thread (#73465 PCB SHELF LIFE AFTER FIRST REFLOW | 9 February, 2015) | 6 December, 2017

Suppliers have improved the utility and quality of OSP [organic solderability preservative] solderable surface protection over the years. Be cautious reading too much into older SMTnet [and web in general] conversations about handling OSP.

When properly applied, you should be able to wait a day or two between heat cycles, providing that OSP surface is not damaged. Find out ...

* Was it properly applied? [Your supplier should be happy to help understanding this question.]

* Are you doing something to affect the coating?

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