Electronics Forum | Wed Jul 29 17:43:26 EDT 1998 | Steve A
| Hi, good friends | I found this site is so wonderful to learn SMT techniques meaningfully. | We now employ 3 Fuji GL-541 dispensors and raw material with Soma IR-120. but we found glue string casually. From my experience from trouble-shooting the c
Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis
| Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple
Electronics Forum | Fri Feb 16 09:30:38 EST 2007 | DEK Answer Guy
Hello PR, PumpPrint� technologies enable high throughput adhesive deposition using a screen printing platform. Careful selection of stencil material, and informed study of the design of apertures and other stencil features, enables a wide range of
Electronics Forum | Thu Jun 24 19:14:44 EDT 1999 | Mike Konrad
Very good questions Bob� Given the fact that my company is a manufacturer of batch cleaning equipment, I will speak more in general terms rather than in specific terms. There are several criteria used in the evaluation of batch aqueous cleaning sys
Electronics Forum | Tue Sep 08 15:11:26 EDT 1998 | Mike Demos
Rich: In my experience, I have seen three cases of SMT Capacitors cracking: 1. Due to thermal shock when entering the wave solder. Note that these were 1210 package sizes on the wave solder side of the boards. We were able to trace this back to th
Electronics Forum | Tue Aug 04 11:10:22 EDT 1998 | Chrys
| Hi Stoney, | Justin is giving you some good advice, unfortunately these kinda' problems sometimes call for the ol' D.O.E...otherwise, you could be chasing your tail for a while until you figure out exactly what's causing your problems. | Has
Electronics Forum | Thu Jul 20 17:01:26 EDT 2000 | Bob Willis
Here is some further information on SDSRS process, but please purchase a copy of the report from t he SMTA as all the money goes to charity. In the UK the SMART Group raised over �3000 for the homeless. SMTA have been raising a lot of money for the G
Electronics Forum | Thu Jul 20 15:08:53 EDT 2000 | Bob Willis
Yes no problem here it is in a nut shell. The sponsor of my CD ROM on this process was Loctite who specifically developed a glue for the process to cure in less than 10seconds. Have a word with these guys they may even have a few CDs. PROCESS SEQUEN
Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis
This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder
Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
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