Electronics Forum | Wed Oct 28 17:30:55 EST 1998 | Chrys
| | Can anyone supply me with info on determining the volume of paste left on a pad once reflowed compared to the intial amount put down? Is there a formula or something? | | | That information should be contained in the technical data sheets suppli
Electronics Forum | Tue Oct 06 15:50:12 EDT 1998 | Bill Tuttle
We are experiencing poor wetting on various components placed on a PCB with En-Tek coating. Is anyone else experiencing simular problems ? We have the following questions: 1. How can the thickness of the En-tek coating be measured? 2. Is En-tek vol
Electronics Forum | Wed Sep 30 04:36:54 EDT 1998 | Jacqueline Coia
Still cant get a fix to SMD soldering problems, Joints still look strong shiny and well wetted, although when pulled lead still coming away from pad, leaving a dull grainy looking space. This is occuring just after reflow (convection), no other proc
Electronics Forum | Wed Sep 30 20:56:31 EDT 1998 | Tony Barry
Assuming that your components and PCB's have good solerderabillty and are stored in an air conditioned environment and kept free of contaminants then your problem sounds as though there is insufficient wetting of the component leads due to low temper
Electronics Forum | Thu Jun 25 16:13:05 EDT 1998 | Mike McMonagle
I am looking for a little enlightenment with an issue that we have been seeing. We have SMT assemblies with poor solderability on TSOP and mini-QFP type devices. The solder appears to have incomplete reflow and/or grainyness to the joints. Everything
Electronics Forum | Tue Jun 09 15:46:29 EDT 1998 | Aric Parr
| Hi there Gary, | Your solder ball problem is very similar the problem I experienced, but I was using a water soluble paste at the time. It started by inspectors telling me that they were seeing cold solder on some SIMM's that we had built regularly
Electronics Forum | Wed Apr 01 11:08:03 EST 1998 | Bill Schreiber
Smart Sonic's 440-R SMT Detergent cleans all types of solder paste, wet SMD adhesives and post solder flux residue from misprinted PCBs, stencils and tooling. 440-R SMT Detergent is non hazardous and is certified by the Air Quality Management Distri
Electronics Forum | Wed Apr 01 09:55:24 EST 1998 | Chrys
I started using Ensolv about a year ago. It's the best solvent I've found yet for cleaning uncured adhesive. It's also recommended for board cleaning, although I haven't used it on wet paste. As the name implies, its environmentally friendly with n
Electronics Forum | Fri Mar 06 19:19:54 EST 1998 | Pat
Just recently tryed Miller Stephenson MS-465 spray, worked well. Also using Loctite 5290. The MS-465 air dried in about 15 min. The loctite requires ultra violet curing which took about 50 seconds, but didn't cure completely. The loctite will also
Electronics Forum | Mon Feb 23 13:21:03 EST 1998 | Gary Simbulan
Gary, Paladium Leads have been a win-lose proposition as far as I can tell. The vendors win because they don't have to deal with lead and get higher yields. The users lose because of extra engineering time involved with incorporating this on their
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