Electronics Forum | Wed May 07 09:31:28 EDT 2003 | davef
We use uV Dymax glue for thermocouple attach sometimes, but don't like the remainder [anal] and loosing attach, sometimes. Roger Saunders, President Saunders Technology, Inc; said: PRO: � These products are easier to use than high temperature solde
Electronics Forum | Wed Dec 11 01:06:28 EST 2002 | iman
Was visting a production floor, of an SMT assembly line, and saw operators using mechanical pencils to write "process stage identification markings" onto the SOIC packages, after the post-reflow inspection. was wondering if such pencil markings is c
Electronics Forum | Wed Sep 08 17:49:19 EDT 2004 | gregoryyork
Knock off some balls and you may find it has a flat bottom to it were it has mechanically stuck to the solder resist usually seen under 60X magnification. Common with Liquid photoimageable resist (I know again) Best way to check resist cure is to pay
Electronics Forum | Thu Sep 19 21:23:42 EDT 2002 | davef
I'm not saying that an eraser will necessarily work. What I'm saying is that some erasers may cause more trouble than the eliminate. Look here http://aic.stanford.edu/jaic/articles/jaic28-02-003_2.html We prefer a brand called Ruby Red. The "ole
Electronics Forum | Wed Apr 11 14:05:30 EDT 2001 | davef
No, there's not a really great epoxy product for attaching thermocouples in reflow. Specifically, what's your problem? From Sanders Temprobe verbage ... Adhesives There are two general classes of material commonly used to adhesive bond thermoc
Electronics Forum | Fri Apr 30 08:28:39 EDT 2004 | davef
Roger Saunders, President Saunders Technology, Inc wrote a fairly unbiased paper that compared different thermocouple attach methods. You can probably find it on their site. In it, about gluing thermocouples, he says: There are two general classes
Electronics Forum | Thu Jul 20 16:23:08 EDT 2000 | Bob Willis
We set up and ran this process at Nepcon UK with some success but we used a UV adhesive less than 10sec cure so no heat. Push off force for the biggest parts was over 800 grams. We have had to modify the design rules a little to make it work but it
Electronics Forum | Thu Jul 20 05:04:30 EDT 2006 | bing007
We had a similar problem with gold contact pads. Cleanliness is paramount. If you are using foil tensioning system, wash the foil in a stencil wash before use as the cardboard cassettes may be contaminated. Be very careful when loading into a frame f
Electronics Forum | Fri Mar 02 09:08:10 EST 2001 | markkrmp
Frank, I am not talking about the masking on the PCB. I am actually talking about the masking on the solder side of the BGA. We have a very very high dollar BGA and are trying to reclaim alot for reuse. When we remove the BGA from the assembly, you
Electronics Forum | Fri Jun 07 11:39:33 EDT 2019 | gregoryyork
I feared so. The only thing to be done is to tell the PCB manufacturer to increase the Thermal cure so dont set the oven to 150C but to 170C and actually measure the middle board and once it hits 155C then give it an hour cure from then. Also insist
