Electronics Forum | Fri Mar 31 15:58:07 EDT 2017 | jutikagokarn
Thank you for your response. We build boards on an SMT line that is shared with other companies too and are currently using water soluble flux based solder paste on both boards. We realized an issue with washing on one of the boards so requested to
Electronics Forum | Mon Jul 17 10:07:39 EDT 2017 | tch
We run our wave pallets through a batch was with chemistry and DI water, they do not come out 100% but they are much better than no washing at all. Water Soluble fluxes come off fairly easily. No clean fluxes are a pain to get off and I haven't been
Electronics Forum | Mon Oct 30 12:07:42 EDT 2017 | slthomas
One thing that most of the sites I've worked in did NOT have was a room dedicated to SMT and the result is almost always a potentially dirty environment, even if you try hard to keep it clean. The one place I worked where they built a room specific
Electronics Forum | Tue Nov 07 08:10:54 EST 2017 | smtpatrick
I have a number of nozzles for an Assembléon AX-201 that have been allowed to become clogged with old, dried-out solder paste. I am thinking of using an ultrasonic tank in an attempt to clean them for re-use, but I am concerned that isopropyl alcoho
Electronics Forum | Mon Nov 13 14:58:56 EST 2017 | davef
Determine the origin of the solder * Sloppy paste printing technique * Lax stencil underside cleaning practices * Sloppy misprint cleaning practices * Poor part placement practices creating solder balls * Poor material control allowing solder p
Electronics Forum | Fri Aug 17 01:49:51 EDT 2018 | buckcho
Traceability can be made for many things. It is up to the factory and what it wants to implement. You can have traceability on the stencil for a several reasons: 1. Want to check stencil cycles 2. Want to verify if stencil is the correct one loaded 3
Electronics Forum | Thu Apr 04 10:06:11 EDT 2019 | robl
Hi Vikram, Have you looked at the rotating flux buster style pins? A few people do them, but this is probably the best illustration: https://ingun.com/en/Products/ProductGroups/ICT_FCT/CategoryFolder/RotatingTestProbes We also find that the longer
Electronics Forum | Wed Jun 19 10:40:07 EDT 2019 | bobpan
The only thing left is the read head. Older read heads tend to 'weaken' with age. Sometimes some engineers will shim them up closer to the scale using a 10 mil shim. You could also swap them between gantries...i dont think they are to tough to get to
Electronics Forum | Fri Dec 27 17:13:53 EST 2019 | rhormigox
Thank you for the answers. The paste is as spec No-Clean https://www.chipquik.com/datasheets/TS391SNL50.pdf I'am writing them too. For the excessive cooking not sure, the oven sensor (that I think is about right) looks I am close to the profile, bu
Electronics Forum | Thu Jan 23 12:55:45 EST 2020 | roblackey
Key benefits for us: Labour saving - machine part of SMT line (mainly one product type, 2 shifts), so boards effectively delivered ready for the next stage, with no human interaction. Uniformity of finish - where we had a critical dimension we run
