Electronics Forum | Thu Dec 09 07:55:17 EST 2004 | davef
Cavaits are: * N2 is not required for NC fluxes. * We assume you're talking reflow soldering. We assume that you want to be below 1000 ppm O2. Want does your flux supplier say?
Electronics Forum | Sun Oct 09 21:44:12 EDT 2005 | Eskay
If the solder in the pot is to be replaced, the cost is very high. Is there any methods that could control the lead content to be low 1000ppm? Any methods what if the content is exceeded 1000ppm?
Electronics Forum | Tue Jun 21 08:03:32 EDT 2005 | mapell
Curious... are you running any N2 in your reflow? If so what ppm level? I have worked with some reflow users that low ppm levels (
Electronics Forum | Tue Jun 14 16:21:15 EDT 2005 | pr
My chipshooter will not "Time out", it will try to pick 3x and then alert the operator. Which would be 3 misses per empty reel. Unless I misread his post, he said 500 ppm at the placement machine. That makes a big difference.
Electronics Forum | Tue Jan 03 15:33:26 EST 2006 | pjc
Yes Rick, you are correct, Zevatech HBA, PPM7 & PPM9 were all designed and built by Swiss. That was a long long time ago.
Electronics Forum | Wed Jul 30 07:39:18 EDT 2008 | lococost
Anyone else? This is an interresting question. With 1000PPM won't your AOI be worse then the process it is supposed to measure? Won't your AOI become more of a bling thing to impress customers than an actual usefull tool to improve process quality
Electronics Forum | Thu Jul 31 18:46:58 EDT 2008 | jdd
We are in the process of determine our target. We are inspecting with all the options Presence, Joints, OCV, Polarity, etc. What would be an average of ppm on AOI? 1000, 5000, 10000? Low volume - High mix. our machines are Agilent SJ50 Series 3
Electronics Forum | Wed Oct 29 07:48:20 EDT 2008 | davef
Our old friend Bob Willis runs a site aimed at making ppm for electronic assembly process better known. Look here: http://www.ppm-monitoring.com/
Electronics Forum | Wed Jun 12 14:07:59 EDT 2019 | proceng1
FYI, Cardinal just calls PPM with questions they don't know, so just call PPM direct. George knows all.
Electronics Forum | Wed Jun 24 15:16:51 EDT 2020 | SMTA-Dave
The typical CTE below Tg is 40 ppm/K and 110 above Tg ppm/K. The typical modulus is 16 Gpa
