Electronics Forum | Mon May 17 16:34:25 EDT 2004 | pjc
I am an equip mfrs rep. I took a customer to my wave solder principal's factory to run their boards on a wave with no-Pb alloy, (Sn96.5 Ag3.0 Cu0.5) in air environment. The results were excellent with pot temp of 263C (505F). Their boards are low to
Electronics Forum | Mon Apr 16 10:16:01 EDT 2001 | pteerink
Been there, done that, don't wanna do it again..... Was lucky enuf one time to recieve a customer PCB ( we were a contract house, nuff said...) where the PCB designer had decided to put vias in the pads of a QFP80. Probably don't hafta tell you that
Electronics Forum | Tue Nov 09 16:16:57 EST 1999 | Horace Johnson
We have a Ultra 2000 wave solder machine with a Lambda, Omega and Rotary chip waves. We are running three shift and our operators dedross the solder pot every 24 to 32 hours. That is skimming around the nozzles and pumps. Our maintenance does a compl
Electronics Forum | Thu Aug 28 11:07:34 EDT 2008 | saaitk
Can anyone please help me out. I am having solderability issues on a 208 pin QFP. I believe that it may be due to the age of the component. The date code states week 50 of 2003 which is not all that far off 5 years. The component was vacuum sealed at
Electronics Forum | Mon Jul 21 03:48:06 EDT 2014 | edriansyah
Ensure you control the assembly completion. My previous experience, we control the assembly MUST be completed within 72 hrs, since you open the bare PCB seal, until you completed all the soldering process (Reflow & AWS). We manage to control the abo
Electronics Forum | Thu Dec 18 08:18:48 EST 2014 | kevinb
Does anybody know what material is used for over molding I/Cs. I would like to find a material that others use to mold there electronic components. I am wire bonding and mounting a small cap (0201) on an FR-4 board. I need this material to withsta
Electronics Forum | Wed Aug 23 08:55:39 EDT 2000 | Dave F
Dr. Lee: Taking a tangent on your response ... When talking about alternate solders. Bismuth forms an alloy with lead with a melting point of 93�C. Are there special conditions that cause this alloy to form? Or does the alloy form commonly when
Electronics Forum | Tue Jul 13 14:48:49 EDT 2004 | Mark
I was wondering some input on what to use for measuring height on our solder paste for SMT placement. Is there a place to buy a machine or a scale in which you can use? I know in the past I have used a laser scope at another facility but where I am n
Electronics Forum | Mon Feb 07 13:26:14 EST 2000 | Dave F
Spacerwoman: Carol is a professional spacer problem fighter (we think). When people have problems with spacers, they call on SPACERWOMAN!!!!! Here she is to save the day � ;-) Selecting a spacer made of brass is a good choice for many applicatio
Electronics Forum | Fri Jul 16 21:56:04 EDT 1999 | Jeff Sanchez
| | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | What is it you're trying to do? | | D
