Electronics Forum | Wed Mar 01 16:59:44 EST 2000 | Dave F
Robert: Expect a 0.033" raw ball to be within 0.022" of the pad, after reflow. To be clear, that�s not a matter of shrinking by 33%. The volume of solder on the pad is the same as the volume of solder in the raw ball. It�s just that the solder is
Electronics Forum | Wed Mar 01 16:58:03 EST 2000 | Dave F
Robert: On your balls: Solder suppliers make several "standard balls" and can advise you. On your cleaner: Recycling water / direct to drain? Most batch cleaner suppliers can advise you on recycling and filtering systems to keep you out of troub
Electronics Forum | Wed Mar 01 16:58:03 EST 2000 | Dave F
Robert: On your balls: Solder suppliers make several "standard balls" and can advise you. On your cleaner: Recycling water / direct to drain? Most batch cleaner suppliers can advise you on recycling and filtering systems to keep you out of troub
Electronics Forum | Tue Feb 29 21:53:46 EST 2000 | Kelvin Chow
Dear Robert, On PBGA assembly, BGA sphere shrinkage number depends to the following factors, a. BGA Sphere size (before reflow) b. Solder mask opening diameter As far as I know, no formular has been established yet. Most of my friends just collect
Electronics Forum | Tue Feb 29 21:53:46 EST 2000 | Kelvin Chow
Dear Robert, On PBGA assembly, BGA sphere shrinkage number depends to the following factors, a. BGA Sphere size (before reflow) b. Solder mask opening diameter As far as I know, no formular has been established yet. Most of my friends just collect
Electronics Forum | Sun Dec 11 22:39:36 EST 2016 | ppcbs
We have been using the Amtech line for over 12 years now with all of our PCB and BGA Rework. The NWS-4400 is mildly active and will give better results with Lead Free Solder. Note that the LF-4300 is considered a No-Clean. However it will show lea
Electronics Forum | Mon Feb 07 13:22:23 EST 2000 | Dave F
Brian: SMTnet has a "Terms & Definitions" section in the "Library." OA Flux. Flux, Organic Acid. A water soluble flux. Good luck Dave F
Electronics Forum | Tue May 23 15:40:17 EDT 2000 | larry
We currently use both Humiseal and Conap with OA flux. The flux MUST me cleaned off the assembly before coating. I know that Humiseal has coatings that are compatiable with no cleans as long as your processes are defined properly before your coating
Electronics Forum | Wed Jan 26 20:52:06 EST 2005 | Chua
Hi, I'm going to evalute new solder paste and flux for wave-solder. Appreciate you could advise what are the things need to look out during the evalution. Any recommend step or proper way of doing solder paste and flux evalution. Appreciate your he
Electronics Forum | Tue Nov 14 04:17:22 EST 2000 | Mohammed Saad
Hi, I need some information about the relation between the type of flux used in wave soldering and the quantity of dross produced. Thank you in advance for your help Mohammed
