Electronics Forum | Mon Jan 27 14:16:46 EST 2003 | russ
i have done this thousands of times. You are correct about no preheat, however it never seemed to be any issue for us. You do have to make sure that you do not expose any SMT comps. to the solder or they will become heat stressed/fractured. Connec
Electronics Forum | Tue Sep 25 09:56:09 EDT 2001 | nwyatt
Hi, thanks for your input. Yes, we do have a rework station - specifically a SRT Summitt 1000 station, but it causes us many problems and is down more than it's up...I do not think that using it would speed up the process at all. As far as accuracy
Electronics Forum | Thu Aug 31 18:48:25 EDT 2023 | SMTA-64387600
I presume you have a local flux spray with your selective solder machine (I have no idea what you use). If I have a group of leads in close proximity like this, I would be trying to design a well and nozzle setup that I can use to solder all the joi
Electronics Forum | Tue Dec 28 10:57:53 EST 1999 | Amy Castor
I have tried the water soluble flux and the aqueous cleaners but I got the same results you did; horrible corrosion and a white flaky mess. I know exactly what you're talking about. We do a lot of hand soldering around here, and the magical solutio
Electronics Forum | Tue Sep 25 12:50:13 EDT 2001 | mparker
Since you are mostly concerned about the flux and suspect an application issue, you need to do a few things to validate whats going on. 1. Forget about speed of processing, length of time to do the job. Focus on accuracy first, then speed. with that
Electronics Forum | Tue Nov 19 21:38:39 EST 2019 | zack
Hello, The first thing that you need to do is to make process mapping about this incident, so you can exactly determine all factors and observable changes happened during 2 weeks of timeline difference. According to my experience, if all equipment
Electronics Forum | Tue Oct 24 12:20:35 EDT 2000 | JohnW
Adam, Did some work on this a bit back via some good old Taguchi DOE and like Dave(the guru)F say's your component terminations is a big factor but I also foundthat the amount of flux you put on as well as the preheat's has an effect, generally we f
Electronics Forum | Fri Feb 10 12:21:44 EST 2006 | Cal Kolokoy
DaveF is correct in saying that TAL is not the best metric to use in reflow soldering. That is why paste manufacturers give such a wide range; typically 30 to 120 seconds. The peak temperature is more important, especially in the mixed Pb and Pb-F
Electronics Forum | Fri Oct 25 04:06:56 EDT 2002 | kcngoi
Hi Adam, Excessive heat from soldering iron will left the burn mark of RMA flux. The residue is hard to remove. Suggest to use the Flux pen for better control.
Electronics Forum | Fri Apr 26 10:42:28 EDT 2002 | Jim M.
I worked for a telecom company that had sites in the deserts, jungles, mountains and regular built up area's. All boards were built using Aim 291/293 No clean solder paste. (all boards built to Bellcore standard) The boards were coated with Dymax ur
