Electronics Forum | Wed Mar 05 08:12:56 EST 2003 | nifhail
Hi Mike, How do we measure the O2 ppm in N2 environment. I don't understand why the customer keep insisting me to use N2 instead of Air. I don't see the need for it as I done have any soldering issue. Can you share with me why N2 is needed at the fi
Electronics Forum | Wed Mar 05 11:45:04 EST 2003 | msivigny
Hello Yngwie, When we look at the technical benefits of using N2, you'll find that your customer is trying to get a better product. Now as we discuss just a few of the reasons to use N2, when O2 is present in the heating atmosphere it carries oxides
Electronics Forum | Fri Mar 07 12:27:04 EST 2003 | msivigny
Hello Doug, thank you for the additional commentary, it has reminded me of another reflow recommendation that I'd like to make in general for readers. It's not specific to O2/N2 in ovens but in the method for creating and managing profiles for numero
Electronics Forum | Fri Mar 07 10:51:53 EST 2003 | dphilbrick
Another value add of N2 is when you are running a gold over nickel process it is recommended that you reach a peak of 220c instead of 215 when running in air. When you add N2 you can maintain that 215 number with the same results. If you look at your
Electronics Forum | Thu Aug 15 03:23:05 EDT 2019 | sssamw
It depends your product application and requirement. If high level, 100ppm required, or even 2000ppm is also ok. There should have sensor detecting O2 ppm inside reflow.
Electronics Forum | Thu Jan 19 15:21:54 EST 2006 | GS
my experience: End '80 beg '90 we use a solution like that. Along the assembly lines, next to P&P machines we use to get dry cabinets (cheap and simple cabinet) where to put inside of SMDs (reel & trays once out of MBB ) during the waiting time from
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
Electronics Forum | Thu Nov 10 21:33:17 EST 2022 | stephendo
So if you stored them in a nitrogen cabinet then you would reduce the O2 diffusion as well as keep moisture out of the boards.
Electronics Forum | Thu Nov 10 20:39:44 EST 2022 | SMTA-64386598
The solderability shelf life of ENIG is related almost entirely to diffusion of O2 through the gold plating. When O2 diffuses through the gold, the underlying nickel is oxidized rendering it unsolderable (with ENIG - you solder to Ni, the gold dissol
Electronics Forum | Sat May 26 04:57:53 EDT 2001 | Brian Sloth Bentzen
Dear Frang. The right O2 level are mostly determined by the products you produce (E.i. PCB surface and component solderability). In reflow I would say the window is between 100 and 1000 ppm, depending on the issues above. Personal I choose a maximu
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