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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Mattias

#12541

yield of glued 0603:s | 22 February, 1999

Hello Is there anyone who can give me some information regarding yield from gluing 0603 Is there any other problems that you might have had.

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Earl Moon

#12542

Re: yield of glued 0603:s | 22 February, 1999

| Hello | Is there anyone who can give me some information regarding yield from gluing 0603 | Is there any other problems that you might have had. | | We glue bottom side 0603's but have changed our pad spacing to accomodate tolerance requirements. Our spacing was .016" not allowing much slack for glue dots based on accuracy, repeatability, diameter, and height. We now use IPC spacing and our machines handle the job very well with high yields. We still keep the tighter spacing for top side stuff, though I know not why, while using the same spacing for 0402's on top only.

Earl Moon

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Used PCB Equipment - AdoptSMT

Used PCB Equipment - ECM