Electronics Forum | Tue Apr 17 09:38:04 EDT 2001 | CAL
With some help from our good Friends at Agilent Technologies our RF Lab includes testing up to 100GHz. Equipment includes Vector network analyzer, signal analyzer, dual channel power meter, noise filter meter, advanced impedance analyzer (including
Electronics Forum | Tue Jul 30 17:51:18 EDT 2002 | davef
Comments are: * Peak at 245�C for 40 sec seems like a very long time. I�d expect the time at 245�C to be 10 to 15 sec. This long time at peak could dewett the pads. * Really, their 2D vision on the printer can verify solder presence? * A thin coat
Electronics Forum | Mon Aug 27 10:58:44 EDT 2001 | Ryan Jennens
Steve- We had the same trouble with 0805 Panasonic film caps. We had some tombstoning and open solder joints (non-wetting). We found two problems...like you, we changed our pad design to meet their recommendation. Also, they were able to suppl
Electronics Forum | Mon Sep 29 16:38:07 EDT 2014 | rgduval
These papers are a good place to start when learning about profiling: https://www.smtnet.com/library/files/upload/374_RSS_vs_RTS_revised_12-99_(no_pics).doc http://www.ipcoutlook.org/pdf/best_practices_reflow_profiling.pdf If you're having a lot o
Electronics Forum | Wed May 18 08:18:55 EDT 2005 | kvanzill
Yes we have purchased a second machine due to low through put so he will be here on the 6th of June....I will be involved with training then, but so far I have not seen great support from this company as far as thier own knowledge of some problems th
Electronics Forum | Wed Mar 26 10:06:54 EDT 2008 | nibirta
hi folks, i have a question....does anyone knows a method for OSP measurements? well we have some troubles with a non-wetting process. we think that the copper is oxidiezed. There is a chemical test for "measuring" the osp when u count the seconds u
Electronics Forum | Thu Sep 23 23:42:52 EDT 2004 | KEN
The LF pastes will have virtually NO wetting spread. This is normal. LF mobilities are virtually non-existant with SAC alloys. However, the addition of varrying amounts of silver can (and does) improve mobility but, this comes with a price (paste
Electronics Forum | Mon Sep 22 23:27:09 EDT 2003 | severs
By "hacking" do you mean altering the performance of the board or something else? This reminds me of something I saw a while back. Better termed counterfeiting than hacking, it may have some relevance to what your friend is trying to do. The probl
Electronics Forum | Wed Nov 21 19:45:36 EST 2001 | Yngwie
Hi Guys, I need help. I�ve a trouble with non-wetting problem on the lead of 208 pin, 20 mils pitch QFP. We are on intrusive reflow. I never faced this problem before on this product after running them for about 2 years now. This occurred on one pa
Electronics Forum | Wed Jul 28 12:02:48 EDT 1999 | Wolfgang Busko
| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou
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