Electronics Forum | Wed Dec 13 11:24:10 EST 2000 | Wolfgang Busko
Hi George, bad luck! That�s why we professionals get so much money for it. Those "thingies" are mainly capacitors or resistors. If a capacitor is missing you might with luck not even notice it. A resistor, that�s different, you will notice it, what
Electronics Forum | Wed Dec 13 11:11:20 EST 2000 | CAL
CONFUSED???? The the "BIG-chip-in-the-middle" on my image is IC732. IC304 is the 52pin QFP to the right of the "BIG-chip-in-the-middle".If it worked when the "Thingy" was there and does not work when the "thingy" is not there good indications are you
Electronics Forum | Sat Apr 10 10:01:43 EDT 1999 | Jeff Price
| | I am looking for a BGA rework/placement system and would like any experience that you have had. I am looking for a system that is reasonable for the placment, removing and re-balling | | | | thank you | | | -I have had wonderful results with
Electronics Forum | Wed Jun 09 10:26:55 EDT 2010 | smt_guy
Hi guys, which is good... AOI inspection before Aqueous wash of Water Soluble Flux processed PCB's or Wash first before AOI? regards,
Electronics Forum | Tue Apr 13 19:14:25 EDT 2004 | Dreamsniper
Hi DaveF, To explain. The BGA that we have is from Motorola. The solder balls of these BGA's are Eutectic Solder and processed using a NC flux (as per info from supplier). So this means that the BGA pad and solder connections had NC flux process. W
Electronics Forum | Mon Dec 07 12:01:35 EST 2009 | mikesewell
Alcohol won't do much for the rosin residue, you'll have to scrub which isn't good on your QFP. Can you clean the assemblies before removal? A solvent such as Ensolve or Axarel would be effective on rosin.
Electronics Forum | Fri Jul 02 11:17:09 EDT 2004 | jdumont
I agree, the flux will probably burn off before it gets to do its job. Def not a good idea....
Electronics Forum | Tue Jan 31 09:10:04 EST 2017 | Rob
Hi Joshua, We've done both, but a lot depends on what soloution your machine vendor has, and how good it is. Can you add it into your machine acceptance criteria? Rob.
Electronics Forum | Mon Jul 05 03:53:36 EDT 2004 | johnwnz
Hey, this is something that I've looked at and published a paper on back in 2003 at Apex, actually pert of one, the other part was lookign at how effective X-ray systems (lamanography systems) were at detecting & measuring BGA void size accuratly (co
Electronics Forum | Thu Oct 17 00:34:59 EDT 2019 | jani
Hi, We have solder reflow use with water soluble flux and Tin/lead process. There is special glass component which needs to mask during reflow soldering and wash flux+solder mask post soldering. The existing solder mask does washes off. But leaves
