Nuffnang

Friday, September 4, 2009

Printed Circuit Board(PCB)



PCB provides a method to connect circuit and devices together...
common thickness of rigid PCB is 1.6mm...
there are 9 steps to produce a PCB...
firstly, photoplotter & film processing.
secondly, CNC drilling & washing...
After that, copper platting and dryer...
next, dry film lamination and then exposure to UV light...
then, put into developer machine for exposed photoresist dry film...
the next step is etching which is to removed unwanted copper...
this step may need to repeat until the all copper is removed...
then photoresist stripper to remove all photoresist dry film...
this step may took a few minutes...
lastly, hot air platting...
platting all pattern on PCB board with tin by using hot air platting..
this may prevent the copper from oxidization...

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