Electronics Forum | Wed Sep 10 15:28:36 EDT 2008 | slthomas
"I 100% agree that quality engineers can and do solve a lot of problems on the spot." *cough* *snicker* Or did you mean "engineers of high quality"? By and large, the QE's that I've worked with only found, identified, highlighted, or conjured u
Electronics Forum | Wed Sep 10 15:35:21 EDT 2008 | gregoryyork
Do those Balls pass IPC LOL Looks like the paste has been stored incorrectly probably stored stood upright and the flux medium has 'moved' so you have very rich flux areas and getting slumping due to it. Paste in cartridges should be stored flat refr
Electronics Forum | Thu Sep 11 10:51:56 EDT 2008 | slthomas
ISSG, I didn't see you mention anything with respect to profiling. Should we assume that you've already ruled out any thermal issues? Based on the proximity of your problems to a big honkin' connector that's where I'd have looked first. But then a
Electronics Forum | Mon Sep 08 10:34:37 EDT 2008 | blnorman
Because of our high volume production, we use no clean flux. We have experienced leakage currents with leadless QFNs. One problem is the part isn't being utilized as it should, but another is the flux residue. There is ionic residue in no-clean fl
Electronics Forum | Tue Sep 09 10:29:58 EDT 2008 | wavemasterlarry
Wow, the anger grows deep within this one. Why not build some with and without no cleans flux? Nothing like real life stuff versus all these experts. Or start by cleaning and work your way out form there. I's rather clean and know i have good pro
Electronics Forum | Fri Sep 12 18:31:09 EDT 2008 | davef
2008 Euroland membrane switch symposium lists what they call leading manufacturers of machinery and consumables, including: � 3M � Fimor � Hurtz � Hy.tech Forming Systems � Kissel + Wolf (KIWO) � Luescher � MacDermid Autotype � Marabu � Mimaki � N
Electronics Forum | Tue Sep 09 07:03:56 EDT 2008 | mun4o
Hi All, we poduce diferent kind of Keyboards, and use a lot of SMT LEDs.When I looking for reflow soldering Conditions i n the Data Sheets, usually I find "IR-reflow" Soldering profile.Our Reflow owen have onli conventional heating.Is that problem?
Electronics Forum | Fri Sep 12 18:19:59 EDT 2008 | davef
Questions are: * Why aren't the defective LED blinking? * Do the defective LED blink when removed from the board and tested according to the functional test that you used prior to assembling the boards? * Do the defective LED blink after the solder i
Electronics Forum | Mon Sep 29 14:47:07 EDT 2008 | ikonify
Have seen similar problem before with regards the MSD being the cause. But also seen similar defects being found at functional test as the in-circuit test was injecting to much current during test. The devices were walking wounded afterwards. The in
Electronics Forum | Tue Sep 09 09:02:39 EDT 2008 | floydf
We are quoting a job that has about 30 50 pin D connectors on one side of the board, and about 10 on the other side. Barring any stroke of genius, we would wave solder one side, and hand solder the other side. Does anyone have any suggestions on how
