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 | 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 | Sat Mar 04 05:55:40 EST 2023 | jrogalski88
So we have 3 new ITW/EAE Centurion ovens that all have issues when running nitrogen to keep the o2 ppm below 1000. It is always much higher, sometimes gets lower when no boards are loading in. They've had us replace valves and do an upgrade kit that
Electronics Forum | Sat Apr 25 08:48:45 EDT 1998 | raymond
Is there an industry standard in calculating SMT process PPM level for benchmarking purpose ? What are the industry benchmark ppm number for some of the defects like solder short for 20-mil QFP, tomstone problem for 0603 components etc....
Electronics Forum | Mon May 24 06:00:23 EDT 2004 | johnwnz
call me picky but doesn't hydrogen combust? maybe soemthing you could do is look at your process and your products and decide if you actually need to run in N2. Yes ok I can hear the crys now but seriously, for the vast majority of things if you have
Electronics Forum | Sat Apr 25 12:58:13 EDT 1998 | Earl Moon
| Is there an industry standard in calculating SMT process | PPM level for benchmarking purpose ? What are the industry | benchmark ppm number for some of the defects like solder | short for 20-mil QFP, tomstone problem for 0603 components etc....
Electronics Forum | Sat Jul 16 13:53:52 EDT 2022 | yannick_herzog
Hello all, we use a reflow oven from Rehm in our SMT production. At the moment we solder under nitrogen atmosphere (approx. 500ppm). Now we want to reduce the nitrogen consumption (costs etc.). What consequences can occur here? Especially on the s
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.
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