Electronics Forum | Sun Jun 10 23:49:17 EDT 2001 | Robert Sykoh
No-clean is definitely a cheaper process. It will eliminte cleaning. Some issues associated with no-clean are: -- the flux stain left behind on the PCB will create a cosmetic issue. You may want to seek advice from your customers. -- next, the flux
Electronics Forum | Thu Jun 14 00:50:32 EDT 2001 | procon
Greg, You may want to look into having a company that specializes in reflow optimization come to your facility and get you all set-up. Their are many companies that will come in and create the best profiles for your product with a process window tha
Electronics Forum | Mon Jun 18 19:37:02 EDT 2001 | Gil Zweig
You can use your x-ray inspection system to QC incoming multi-layer printed circuit boards. In particular you would want to insure drilling registration. A drilled, plated through hole, precipitously close to a ground plane can have , in time, copper
Electronics Forum | Tue Jun 19 13:49:08 EDT 2001 | Ben Brandt
Hello everyone. I'm trying to locate (if it exists) an impact sensor (which would activate if hit or jarred) on some sort of roll form with 2 leads which could be easily placed and soldered through automation. If anyone knows of a supplier, I would v
Electronics Forum | Sat Jun 23 21:04:44 EDT 2001 | Stefan
If you want to tinker a bit with old machines, you could buy an inexpensive ( under $ 10,000 ) used Pick&Place machine and reverse the polarity on the tape feeding motor. If you don't heat seal the cover tape, but use pressure sensitive cover tape,
Electronics Forum | Mon Jun 25 17:01:18 EDT 2001 | traviss
Do you by chance have a copper layer soaking the heat away from the pads? If you do or even if you don�t you may want to try bumping your bottom heaters up, try bringing the heat through the PCB. This may help pull the solder down to the pads. This m
Electronics Forum | Wed Jul 11 20:19:13 EDT 2001 | davef
Can�t comment on the Volumetric LSM [although a little voice makes me want to say: someone commented positively on it in an earlier thread. Check the fine SMTnet archives]. The 300 LSM is expensive and has a lousy gauge R&R, but other than that, it
Electronics Forum | Wed Jul 18 08:16:59 EDT 2001 | Aaron Squires
What experiences have you had with flex circuits and what methods reducing strain relief are most common? Currently, we are using a epoxy to doctor strain by running a bead between the flex cable and the PCB. Also, we are covering the solder joint.
Electronics Forum | Tue Jul 24 13:15:22 EDT 2001 | Steve Schrader
Greg, The increased space and hence potentially increased airflow will have no effect on "solderability." It may effect the temperature that the balls see and that is a different issue that can be worked from a profile standpoint if you are not hit
Electronics Forum | Thu Aug 02 12:43:14 EDT 2001 | nwyatt
Wave rider is an oven profiler made by ECD. http://www.ecd.com. They are commonly known for their MOLE. The wave rider is different from the MOLE because it is used to measure the temperature, conveyor speed, etc. of the OVEN instead of the pcb.
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