| I am interested in seeing how some of you quote smt work. Currently we quote off a bom without component packages known then look in data books to find out what type of component they are. This job will be mine soon but i really believe there is a better way. From what i understand they use the total number of leads on a pcb as the main factor regardless of the type of component. Any feedback is appreciated. | | wayne sanita |
Wayne,
We also quote off B.O.M, many potential customers will use an actual vendor part #. After a few quotes you should be able to recognize the size/packages of parts by these numbers. However other considerations should be looked at:
1. Capabilites of placement machine? Can you do 0402's or BGA's
2. Number of Feeders you can fit on machine? Do you have to purchase new feeders
3. Is PCB single or double-sided?
4. If double-sided can I glue then wave solder? or Double reflow or Simultaneous reflow
5. Is fine pitch IC's on board?
6. Do my stencils need laser or Chem-etch?
7. Do my apertures need to be reduced?
8. Can I use intrusive reflow on any thru hole?
I sure that other netters can add on some more. I would stress that you should know your automation capabilities very well. Read the advice that these guys on SMTnet have even if not in your are of expertise, there is always a chance that your boss or someone will ask "What if we .....!"
Tom B.
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