Electronics Forum | Sun Jun 05 03:29:45 EDT 2022 | ttheis
Yes, we confirmed under microscope there was a small bit of paste contamination on the nozzle. We found this on two nozzles that were rejecting parts. Problem solved once the nozzles were cleaned and non-reflective.
Electronics Forum | Tue Jan 10 18:46:30 EST 2023 | cyber_wolf
Check your 500 nozzles under a microscope very closely for tip damage, clogs, or un-smooth spring action. 1 bad nozzle can make it seem like you have a chronic problem. If you have knock off nozzles (chinese reproductions) that can be an additional i
Electronics Forum | Fri Sep 22 12:11:31 EDT 2023 | wippsen
Hi there, if there is insufficient Volume you may optimize the design of your stencil. Its not the goal to decrease the tolerances. Take the PCB and take a look at the printing Shapes with microscope or use the zoom in 3D Function. If there is too l
Electronics Forum | Wed Jun 23 13:34:29 EDT 2004 | df_indy
I am four weeks into my new job, there always seems to be some issues here with PCB every week. Today while I was checking some assemblies with micro-scope, I found a lot of tiny bubbles/blisters on the board. They are just little dots if you look
Electronics Forum | Thu Aug 25 04:55:32 EDT 2005 | Khoo Meng Tze, Freescale Malaysia
Hi, Whenever I'm measuring IMC using the optical microscope, I have to make sure that the images captured are clear. If not, then i will have an issue in differentiating the blurry areas between the IMC and solder(for example). This gives variatio
Electronics Forum | Tue Jan 15 15:53:14 EST 2008 | jmelson
I only build my own products, so it has to meet my needs for QA only. I am doing some 20 mil lead pitch (0.5mm) and will soon be doing a 0.4 mm pitch part. I have more magnification on my microscopes (40X) but almost never need to go that high. If
Electronics Forum | Tue Oct 26 02:22:51 EDT 1999 | Joe
dave: One more thing about dpmo, I should have mentioned before is, how do you measure dpmo in your production? About the post print inspection, how do I measure paste height? (I have a microscope, will this do?)
Electronics Forum | Thu Apr 22 07:51:32 EDT 1999 | Vic Lau
after soldering transistors on a flex circuit (Ni/Au plated), one of the lead lift-up from the pad. under microscope (1,000 X), i find some cracks on the the pad surface. with edx analysis, the surface is mainly nickel. have you ever encounter suc
Electronics Forum | Tue Jan 29 13:06:40 EST 2002 | Sergio Vito - Alan Patrick - Cristiano Dick
Dear sirs, We are experiencing problems with lines of lead formed inside the solder joint. In others words, there is a problem with the formation of the solder joint, after analyses on a microscope we can see the lead grouped in some positions. This
Electronics Forum | Sat Dec 21 13:20:49 EST 2002 | V.RAMANAND KINI
cool Music soothens one's emotions. It should be mild and not loud. No voice. Just music...Solos. We have used this successfully in our plant. Every hour we have a two minutes break to give rest to our operators who use microscopes for all the work.
