Electronics Forum | Mon Feb 06 09:17:35 EST 2006 | Cal Kolokoy
Mike did you have these SEM'd to be able to see the IMC's within the solder joint?
Electronics Forum | Wed Feb 01 06:02:59 EST 2006 | joe
Hi, SAC BGA's in a SnPb reflow process can be achieved by ensuring the temp. on the BGA is at a peak min of 220�C and a time above 207-210�C for 60 - 90 Sec. Lower temperatures have shown incomplete mixing of alloys and some voiding.
Electronics Forum | Tue Jan 31 14:23:39 EST 2006 | samir
Chunks, For our lead-free eval, we had the same problem with "charred looking" solder paste up the component termination of one of the smaller discretes, coupled with excessive solder balling...this smaller part did see peak temps in the 240 range -
Electronics Forum | Wed Feb 01 07:32:05 EST 2006 | Chunks
Try an intermediate paste like Loctite/Henkle 218. It's design is to be used in a mixed lead/lead-free process.
Electronics Forum | Tue Jan 31 12:13:26 EST 2006 | Calvin Kolokoy
Today's regular Sn-Pb paste chemistries are designed to run at higher peak temperatures ensuring that your lead-free alloys will coalesce with your regular Sn-Pb solder. That being said, it is do-able to solder both types in one oven. Generally, wit
Electronics Forum | Fri Feb 03 16:40:24 EST 2006 | Mike
At my last employer, we ran a number of tests to make a "Hybrid" profile work (same profile Joe lists) . It worked great for everything but BGAs. The problem (6 months ago) was using parts not rated for lead free reflow temps. As the market fills wit
Electronics Forum | Mon Apr 16 18:49:40 EDT 2012 | tris101
Hi guys, I'm looking for some tooling parts and I hope you can point me in the right direction. We design basic in house reflow Carriers to surport boards during reflow. I would like to add clamps to our designs but I can not locate any off the she
Electronics Forum | Tue Jan 31 12:02:22 EST 2006 | aj
how would you apply both pastes.? anyway, I have succesfully run leadfree bga with lead paste. You gotta find a profile that kinda meets both requirements. Taking into consideration the peak temp and time above. dont have details on hand but I ca
Electronics Forum | Wed Apr 25 14:41:13 EDT 2012 | davef
Try: Equipment, Sldr pallet hdware clips * Summit Precision 5825 S 25th St, Phoenix AZ 85040 Dennis Miller 602-268-3550 summitprecision.com sales@summitprecision.com * Southco 210 N. Brinton Lake Rd, Concordville, PA 19331-0116; 610-459-4000 southco
Electronics Forum | Fri May 04 16:22:21 EDT 2012 | wesm91229
Hi Tristian, I work at the 1st company listed- the link you posted is our website. We have updated our clamps for those type of SMT process carriers. Feel free to email me @ wmartin@gscusa.net or call 972-494-1911 and I can help you out. Sorry for