Electronics Forum | Wed Sep 27 12:46:42 EDT 2006 | John S.
Steve, We use the 955 version for printing with the DEK Pump Print process on two lines in high volume. We clean the stencils in an ultrasonic bath with Hydrex A+ I think diluted in deionized water at the end of 2nd shift. By startup, they are dry
Electronics Forum | Wed Sep 27 15:57:33 EDT 2006 | SWAG
I wanted to post resolution on a reflow oven problem we had but can't seem to search out the old thread. So, this is new but old. Our OmniFlo 7 conveyor was stopping every once and a while and the speed indicator on screen said 1000+ ipm. We cle
Electronics Forum | Thu Oct 05 07:23:34 EDT 2006 | Chris
Hi all experts, I have no background about PCB or SMT process. I am now encountering some issues after SMT - Unstable stitch bonding condition. I am now suspecting some contaminants remain on lead after cleaning. Therefore, how can I check th
Electronics Forum | Mon Oct 16 16:25:53 EDT 2006 | Cmiller
I think we run our Vectra between 9 to 14 PSI. If memory serves me, I dont think you can set it above 14 PSI. We use VOC free no-clean. Your number seems WAY high. Check the nozzle. You also may need a different nozzle size. We always run a good filt
Electronics Forum | Mon Oct 30 20:24:35 EST 2006 | davef
As we understand it, you: * Get some nice BGA from your supplier * Find BGA to be packaged properly * Bake the BGA for 24 hours at [what temperature?] to reduce the potntial for damaging moisture sensitive components during following processes * Remo
Electronics Forum | Mon Nov 13 10:02:52 EST 2006 | pforister
Bill, We only allow 3 boards to be printed in front of the pick and place equipment. It is important to keep the abandon time to a minimum. You did not mention the paste that you use. Do you use no-clean or water soluble? Do you use lead free?
Electronics Forum | Thu Nov 09 08:06:17 EST 2006 | cyber_wolf
We are having continual problems with our stencil bindings falling apart in our washer. We use a PMR5000 ultrasonic with Vigon sc2000 cleaning fluid. We cycle them in the washer for about 9 minutes. The fluid sometimes heats up to 105 deg F. Our
Electronics Forum | Mon Nov 27 13:36:24 EST 2006 | cyber_wolf
The fluid heats up to 105-110 from the ultrasonics running, and or from the fluid filtering pumps. The rinse temp is always the same as the wash. It is a single tank with a partition welded in between. (One side rinse, and the other side wash) FYI
Electronics Forum | Mon Dec 18 09:24:45 EST 2006 | ev
We are a small CM doing mostly prototype and small production runs SMT and PTH. We have an old Hollis machine works well when we need it. The foam level does not come up to the board level, even with the air cranked up full. We are using a synthetic
Electronics Forum | Thu Dec 28 15:40:13 EST 2006 | fredericksr
The fluxes involved with lead-free soldering tend to be more aggressive and the tip deterioration is a side effect of making the world a greener place. I am not certain if any of the tip manufacturers claim to have lead-free resistant tips. I would
