Electronics Forum | Fri Oct 29 04:07:27 EDT 2004 | Nick.W (TWN)
Hi, > > Has anyone had any experience with lead > free Sn-8Zn-3Bi solder paste? Apparently in Japan > it's becoming popular because it's got a melting > point of below +200C. > > Can anyone confirm that, > or does anyone have experience with >
Electronics Forum | Fri Nov 12 03:57:17 EST 2004 | pioneertechnology
Hi All For the past 8 years we have been screen printing paste succesfully using hard rubber blades. Over the past 12 months we have changed paste from lead to lead free, the board size has changed from 300x200mm to 120x90mm and we have also moved
Electronics Forum | Wed Nov 17 15:04:27 EST 2004 | russ
SMT assembly, First, you must utilize paste otherwise the parts will not stay put. Do you have any leaded devices such as QFPs or SOICs? Dispensing paste by hand is very difficult and time consuming for these types of parts. You can either dispense
Electronics Forum | Wed May 18 14:58:05 EDT 2005 | splice
Hi, I am having some PTH non wetting issues. Setup and chronology of events is explained: Set Up; Part: 1 MM pitch connector 378 pins Solder: Kester Ultra Pure 63/37 solder Pot; 250 C pre heat; Peak 94C top side Flux: Qualitek 775, Fluxer: foam T
Electronics Forum | Mon May 23 10:53:32 EDT 2005 | HOSS
Eric, We also have a UPK 650C. Our machine was configured for N2 and using the ConTour nozzle. If you're using this nozzle without N2 you're creating tons of dross unnecessarily not to mention probably getting tons of icicling. We found out the h
Electronics Forum | Wed Aug 09 09:25:57 EDT 2006 | Mike F
Am I missing something here? I usually put some type of stiffener or support on the leading edge to make sure the PWB doesn't sag in the middle from the preheat. If I had to add a bean bag with shotgun pellets or BB's I would have boards falling out
Electronics Forum | Mon Jun 27 14:20:57 EDT 2005 | Bob R.
If you visually inspect the solder joints of the first dozen or so boards with the Pb free parts and you're meeting workmanship standards then I wouldn't worry about it. When we started getting the first barrage of Pb free parts a couple years ago w
Electronics Forum | Thu Jul 14 17:18:38 EDT 2005 | August
Dear All, I'm looking for the complete SMT equiment line (solder printer, P&P, Reflow) uses for the small volume production line. I happen to know that Manncorp and APSGold can provide the complete ST line, but I haven't hear and use these machine be
Electronics Forum | Fri Mar 03 20:19:05 EST 2006 | Paul wood
THE IS A REASON ITS FOR SALE CHEAP THE DRS 24 IS BEING SOLD BECAUSE ITS NOT SO GOOD FOR LEAD FREE BGA REWORK IT CANNOT RAMP UP THE PCB AND PARTS AT THE SAME RATE BECUASE OF THE HOT PLATE.ITS A OLD MODAL AND LOTS FOR SALE AT $10K AS NO ONE WANTS THEM
Electronics Forum | Wed Aug 10 09:01:15 EDT 2005 | fctassembly
Hello Joseph, Sorry for the bad news but microcracking is a well known potential condition occuring with the SAC305 alloy. Microcracking is a condition being seen with many joints soldered with the SAC305 alloy. It is technically a shrinkage cavity
