I have been plucking some IC chips off my low grade boards (the ones that come off rather easy that is). Do I need to clean all the brown board off of the chips or is it ok if a bit remains. Thanks crew.
Printable View
I have been plucking some IC chips off my low grade boards (the ones that come off rather easy that is). Do I need to clean all the brown board off of the chips or is it ok if a bit remains. Thanks crew.
Dunno, never sold chips before. I have been leaving snapping them off the board & sometimes the board comes off with it or it falls off.
My intention is to use a belt sander to sand off all of the legs later on.
DrJ-I would think that buyers want them clean meaning no board attached.
Kiwi- i do not believe that you have to grind the legs off of them.
For the ones soldered on take a wood chisel and pop them right off. For the ones that are in a socket use a flathead screwdriver and pry them out.
ICs usually have copper legs. I try to remove all the solder and board while leaving the legs as long as i can.
I suspect that a broken IC chip makes no difference right. I don't think I will take much time popping these fellas off, but if they come easy, why not?
Take the wood chisel and start down one side tapping gently on the legs and usually they will work up out of the hole. Then go to the other side and do the same. Occasionally you will shear off some of the stubborn legs but usually they will pull loose out of the solder.Quote:
Originally Posted by DrJamesDaddy
When I use a wood chisel, I usually use the wire cutters that are always nearby as the hammer. However, I really like using an air chisel after saving up a nice batch.
Oh wups, I was thinking of the lower grade chips, since it was a lower grade board. The sort that has the legs going completely thru the board.Quote:
Originally Posted by BRASSCATCHER
I have been breaking up the TV boards & removing the chips that way & 1/2 the time the board breaks off across the holes & leaves the bit of board under the chip still soldered to the board.
(& I get the SAW devices as well)
I intend to process the chips myself so I need all of the legs removed.
The 'flatpacks' I just use a boxcutter knife & cut thru all the legs on two sides of all of the chips, then I turn the board 90 deg & cut thru the other two sides of legs & the chip falls off.
I brought a pack of cheap wooden handled craft knifes for NZ$5 & they work better than the boxcutter, the boxcutter gets caught sometimes & also needs to be snapped so I get a new sharp blade edge.