Electronics Forum | Tue Dec 12 13:33:52 EST 2000 | justin medernach
Dross removal is dependent upon the "activity" in your solder pot and the usage of a inert or an "air" atmosphere. The more moving that agitate the solder, the more dross. Basics first and then the answers will make sense. What is dross? Oxidatio
Electronics Forum | Thu Oct 26 08:59:56 EDT 2000 | Antonio A. Medina
Ok guys, I need help. Here's the deal. We're getting micro solder balls under discreets on the bottomside of the board. Here's my set up... MPM screener w/vacuum plate 6 mil metal screen with 90% circular (rounded) apertures 7 mil (measured) past
Electronics Forum | Mon Aug 14 18:24:36 EDT 2000 | Dave F
James: Here's a starting point: 1 www.wwnet.net/~rkroy/wp-inb.html 2 www.sas.com/otherprods/jmp/Home.html 3 www.micromeg.com/ 4 Boeing SQC (avail. from Boeing for $100) is a good little package for DOS machines. 5 For Windows, SPC KISS from Air Aca
Electronics Forum | Mon Jun 12 22:02:48 EDT 2000 | Dave F
Jason: Wave soldering is the coolest thing!!!! First, so, what�s the chemical analysis of this white res? Can you point us to either tin, rosin, or something else? Second, how do you know that you are making these white residues? Could your boar
Electronics Forum | Fri May 12 11:48:35 EDT 2000 | Mike Konrad
Advantages of using a stencil cleaner verses manually cleaning stencils: 1. Using a stencil cleaner ensures no direct contact between operator and solder paste (lead being the primary concern). 2. Most stencil cleaners remove 100% of the solder p
Electronics Forum | Tue May 02 12:17:22 EDT 2000 | C.K.
Donnie is correct. "NO-Clean" doesn't translate to "no-residue!"..... who's giving you hassle about this - your ICT guys??!! Residue remaining on your PCB substrate is a function of many different things - flux deposition, solder mask (glossy means
Electronics Forum | Tue Mar 21 20:33:09 EST 2000 | Dave F
Shane: We don�t dispense, but we have thought about it. Several points about peelable solder masks in a no-clean (low residue) process: � Beware of latex peelable solder mask with a low res process without extensive testing. The problem is usuall
Electronics Forum | Wed Mar 08 17:01:32 EST 2000 | Russ
So far, I have not been able to get any consistant or good results using one of these "problem solvers". I have managed however, to screw up some good processes. I believe that this technology can work though. I would reccomend contacting Speedlin
Electronics Forum | Thu Feb 08 09:07:22 EST 2001 | Hussman
OK, without knowing the specifics, why does everyone blame the oven? Most solder balls occur around R's and C's in almost every shop I've been to. The best place to start looking is the screen printer - not the oven. Sure the oven is the last proc
Electronics Forum | Thu Mar 01 10:46:11 EST 2001 | davef
Various lint free stencil wipe suppliers take various approaches to stencil cleaning. For instance ... Techspray Directions: Start with a dry TechClean Wipe (2358, 2361, or 2362) to remove excess solder pastes. Follow this with the 1608 Pre-Saturat
