Electronics Forum | Thu Mar 16 17:33:40 EDT 2017 | dontfeedphils
Voiding, fracturing, barrel-fill, I'm sure there are some I'm missing.
Electronics Forum | Fri Oct 22 18:57:25 EDT 2010 | jry74
I am having a horrible time with the square radial lead capacitors (thru hole components) and the part coating flowing into the solder joint. These are Class 3 products. When we run them through the wave solder machine, the solder travels up the le
Electronics Forum | Tue Jul 02 02:50:55 EDT 2002 | ianchan
Hi mates, was going thru the IPC-A-610C Standards, and noted BGA voids stands somewhere between 10%-25% voids permissible in the solder "ball" bump, after reflow process. Was wondering, hypothetical case study, is there any specification for voids
Electronics Forum | Tue Jul 02 07:11:31 EDT 2002 | davef
There is nothing inherently wrong with voids in solder connections. They: * Do indicate that the reflow soldering process is not well controlled. * Can comprise the strength of the solder connection. Look here: http://www.smtinfocus.com/smt_failure
Electronics Forum | Tue Dec 14 03:26:09 EST 1999 | Chris May
Steve, Two good reference books to have are 1) SMT Soldering Handbook by Rudlof Strauss (ISBN 0-7506-3589-4) 2) Soldering In Electronics by R.J. Klein Wassink( ISBN 0-901150-24-x) Regards, Chris
Electronics Forum | Thu Apr 05 12:45:45 EDT 2001 | Claude_Couture
On mixed technology PCBs, we find numerous blow holes on the solder joints of radial parts (electrolytics, LEDs, etc). The solution that works so far is to cut the leads very long in the radial inserter so that the part is kinda loose and the air in
Electronics Forum | Thu Jul 20 16:45:54 EDT 2000 | Darby
Good morning Bob. Darby from Australia here. We sometimes see an orange peel type finish on our reflow solder joints when viewed under the microscope. Any ideas on what causes this ? Should I worry about it. I use a straight rise profile ( no "platea
Electronics Forum | Thu Sep 02 15:50:30 EDT 1999 | R Scheller
Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combination which
Electronics Forum | Thu Mar 23 02:10:59 EDT 2017 | alexeis
Hi, Based on our experience, you can collect X-Ray analysis of solder joints and calculate values of SPC (such as PP/PPK and GR&R). Now, you can find, based on this calculated values, if your production is good or not. Also, this helps you to detect
Electronics Forum | Thu Apr 05 13:54:18 EDT 2001 | CAL
Do the parts sit directly on the PCB? Typical 2.0 mm Max is desired for the component to be off the PCB. Are stand-offs an option? The long lead wiggles as it passes through the wave and thus agitating the air out.Does your wave a "dancer" option?
