Electronics Forum | Tue Aug 07 12:18:37 EDT 2001 | delnosa
Looking at ideas for "best in class" process controls for SMT mfg. ops. Wanting to add improved p-controls at some of our suppliers and I'm looking at what others may or may not recommend. Already looking at the following: Solder Printing X-Y-Z axis
Electronics Forum | Tue Aug 07 16:12:13 EDT 2001 | Michael Parker
In addition, consider: Solder paste selection, including clean or no-clean is also quite important. This can vary from application and is somewhat process dependant (what works best in the environment). Relow profile. A must for many reasons. And
Electronics Forum | Wed Aug 08 04:00:46 EDT 2001 | jackt
Folks, I 'm in progress of generating the DFM checklist for New Product Introduction on PCA. I need some reference articles to prepare it apart from IPC-SM-782 (surface mont design and land pattern standard)that I'm using now. Any idea of extracti
Electronics Forum | Thu Aug 09 13:01:12 EDT 2001 | seand
Hello John, Just a thought, try contacting your equipment manufacturer. They usually see a bit of everything when it comes to applications. Maybe they can recommend a solution. Sometimes this involves purchasing something, but at least you can ta
Electronics Forum | Fri Aug 10 02:30:46 EDT 2001 | praveen
Hello Friends, Please advise how critical is the Micro BGA baking? The BGA size is around 7x7mm and we need to program it before mounting. The Micro BGA's are supplied in Trays and are put in to tape and reel after programming.We need to put these BG
Electronics Forum | Fri Aug 10 13:09:49 EDT 2001 | Hussman
Hey Wister, Assuming you are talking about BGA voids, and you just want to try and optimize your profile, you could try a "straight ramp profie". This is where the soak temp is constantly being elivated until you hit reflow. I find this helped me
Electronics Forum | Wed Aug 15 13:25:50 EDT 2001 | seand
Hello Jean, You may want to try QWIK-Trace out of Scottsdale, AZ. They can perform etch cuts as well. I am a local representative for Qwik Trace and would be happy to discuss your application. If you have any questions, you can reach me at 480-82
Electronics Forum | Tue Aug 14 17:09:37 EDT 2001 | davef
Dano's confused. The boards are delaminating during soldering. The delamination just isn't immediately appartent after soldering. Stepping backwards. It's remotely possible that if the boards were blistering hot from soldering and then dumped in
Electronics Forum | Tue Aug 14 21:42:13 EDT 2001 | davef
2% silver will be a little shinier. [Some inspectors hate that.] After that differences get murkier. Some people believe that 2% silver does something er other to scavange gold and silver to produce a less brittle connection. We have never seen ev
Electronics Forum | Wed Aug 15 05:19:14 EDT 2001 | hardy boy
Hi, I have a fine pitch QFP (TQFP100) and after reflow soldering, i got less solder ( not enough fillet) on the toe area but have good fillet at the heel. Does this mean that I have a weak solder joint or is my process not too good ? What is importa
Nordson Electronics Solutions makes reliable electronics an everyday reality. Our ASYMTEK, MARCH, and SELECT brands deliver precision fluid dispensing, conformal coating, plasma treatment and selective soldering equipment.
2747 Loker Ave West
Carlsbad, USA
Phone: 18002796835
.gif)
