Electronics Forum | Wed Jan 16 12:30:38 EST 2008 | davef
As Rob says, blowholes and pinholes are process indicators. Reworking them most likely makes the solder connection less reliable, because it is very difficult to heat the solder connection properly. Shrewd rework-types "paint" solder over these open
Electronics Forum | Fri May 23 08:51:23 EDT 2008 | bandjwet
Does anyone have any great ideas and suggestions for the rework of small package (5 x 7mm) QFNs with raised pads (3 mils off of the bottom of the package). IO count is 36. BWET
Electronics Forum | Thu Apr 09 07:37:18 EDT 2009 | fowlerchang
Another suggestion for it. Baking the whole boards before rework the BGA. It is not only benifit to the BGA but also to the pad.
Electronics Forum | Sun Jul 26 15:22:07 EDT 2009 | quirmche
Hey, I'm a regular do it your selfer and was wondering what would be your recommendations for a BGA rework/reflow system. I've viewed: Zeyphertronics Jovy Bomir are there other you might recommend and what are your thoughts on the ones I have men
Electronics Forum | Fri Jul 31 21:51:09 EDT 2009 | quirmche
Cool I'll check that, thanks! How about maybe video training on rework/reflow?
Electronics Forum | Mon Aug 24 09:25:36 EDT 2009 | scottp
We're just now getting into 0201s and I'm wondering how people are doing rework. Is hand soldering still viable or is some type of semi-automated repair station needed?
Electronics Forum | Mon Aug 24 21:43:28 EDT 2009 | davef
In reworking 0201, we: * Cut the 0201 in half with a side cutter * Heat the solder on each pad separately and flick the half 0201 off the board * Preheat a new component to +150°C with a hot plate * Solder a new 0201 on the undressed pads with a hot
Electronics Forum | Tue Sep 15 08:30:59 EDT 2009 | geb
We use precision tweezers to rework 0402 (OKI MFR-PTZ) not tried with 0201, but it may be a solution. The tweezers themselves have the heating element built in.
Electronics Forum | Mon Dec 07 13:32:53 EST 2009 | ceiaen
Have you considered outsourcing the rework of the BGA? Besides the rework system, you will need: solder paste, stencils, cleaning method, X-ray, and the biggest part experience...
Electronics Forum | Wed Feb 24 01:04:08 EST 2010 | dashley
Is it necessary, or beneficial to apply solder paste on the PCB pads for QFN rework? It seems that using micro stencils is not the best approach. Any guidelines or suggestions available for paste deposition techniques?
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