Electronics Forum | Thu Jul 20 16:08:18 EDT 2000 | Grant Baynham
Do you have any experience with flip chip applications using lead-free solder, and specifically do you have any information revealing how the process parameters for standard air reflow atmosphere can be modified to match the results for solder reflow
Electronics Forum | Thu Jun 28 15:00:45 EDT 2007 | gdzuber
Hello Everyone, I am wondering what you are paying for Nitrogen (N2) in for your re-flow or wave, in $ per m3/hr. Please get back to me so I can determine some long term operational costs. Best regards, Gary Z.
Electronics Forum | Wed Apr 10 05:29:08 EDT 2019 | SMTA-Tiberius
Hi there , We just got a 2000 litre Nitrogen tank for our Heller1809MKIII Reflow Oven , it has been installed and calibrated last week but now the Oxigen PPM doesn't drop below 3000 . Did anybody dealt with this issue before ?
Electronics Forum | Mon Oct 14 19:59:17 EDT 2013 | hegemon
We do in fact see a reduction in soldering defects, most especially wetting issues for both parts and PWBs, tombstones, billboards, etc... As a CM we see all kinds of customer furnished material, some of it not in the greatest condition. Our best p
Electronics Forum | Tue Jul 26 08:20:46 EDT 2005 | Bob R.
All you can do is try it. I did a literature search last year on causes of BGA voiding and came up with a pretty long list, sometimes contradictory. I also discussed it with several paste suppliers. What I came away with is that what aggravates voi
Electronics Forum | Thu Jul 20 17:35:23 EDT 2000 | joevo2k
Bob, Is Nitrogen a "MUST" for reflow and wave soldering of the Lead-Free Solder Alloys ? And is post cleaning be a great impact when converting to Lead-Free Solders ?
Electronics Forum | Thu Dec 21 01:08:28 EST 2000 | Bentzen
Check out my article about reflow soldering in nitrogen atmosphere on www.smtinfocus.com Hopefully you will find some answers and more detailes on my web-site.
Electronics Forum | Wed Nov 10 17:39:34 EST 1999 | Dave Vulcano
Hello, Looking for some insight. We just finished a run and experienced a lot of solder balls. We used a no clean paste, nitrogen atmosphere reflow oven, and saw the solder balls on 1206 - 0805 chip components. All of the solder balls appeared and
Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb
On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t
Electronics Forum | Mon Sep 09 21:42:12 EDT 2002 | rwilliams
I have been involved with the reflow process for many years. However, my most recent position now includes the use of Nitrogen. In studying the reflow process and using Nitrogen, it seems to me that it would only make sense to be measuring the O2 lev