Electronics Forum | Fri Oct 11 17:10:36 EDT 2013 | hegemon
I think the critical item is that you are soldering in a reduced oxy environment, lowering the rate of ongoing oxidation. Heat accelerates oxidation, lack of oxygen (of course) slows it down. The 10 Nitrogen soldering "myths" seem to be more like "
Electronics Forum | Tue Oct 15 19:27:08 EDT 2013 | swag
See if you can get a sample of Dek's Nano Protek. We use it on all our fine pitch stencils. I'd say it's kind of like car wax for the aperture walls. They operators really like it a bug me every day to order more if we run out.
Electronics Forum | Thu Oct 17 14:36:30 EDT 2013 | hegemon
Hey SWAG, any idea where that Nano Protek goes, that you have to replace it? (and I am not talking about polishing up wheels) Is it being scrubbed off of the stencil during the print process, and over time it must be replenished? Sorry a bit off top
Electronics Forum | Thu Oct 17 12:01:09 EDT 2013 | pavel_murtishev
Gentlemen, Have no idea how to remove fully polymerized silicone elastomer resides from a particular product. Product housing has not been designed for filling. Having polymerized, elastomer (DowCorning SylGard 160)expands and gets out of filling ho
Electronics Forum | Tue Sep 16 13:06:18 EDT 2014 | jacky3855
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Electronics Forum | Wed Oct 30 15:50:22 EDT 2013 | joeherz
Vince, We see the same disks on some parts incoming. SMT PEM nuts in tape and reel are very common. We get the parts from PENN Engineering. One of them is SMTSO-M3-4ET. PENN Engineering may be able to steer you in the right direction on who their
Electronics Forum | Fri Nov 08 18:32:39 EST 2013 | hegemon
Dave is right, though apparently a bit grumpy today. What he's saying is that the ring de-wetting is a bad thing, and should have been called out by your lab. You might consider a lab change in the future. Some information about your processes, an
Electronics Forum | Mon Nov 11 10:51:40 EST 2013 | dyoungquist
Are you using lead or lead-free solder? 260C would be good for lead solder but may be a bit low for lead-free. We run our lead-free selective solder pot at 300C although we do not have any pre-heat or top heat, just hot nitrogen blowing around the
Electronics Forum | Tue Nov 19 12:34:33 EST 2013 | jimmyboz
I am not trying to be critical but, you didn't even say Fuji CP-6 problem. There are CP-6, CP-642, and CP-643 machines, are asking 2 model as 642? Anyway, slow the cam speed down in the proper to 40 or 50%. If the problem goes away check the mainte
Electronics Forum | Tue Nov 19 12:36:01 EST 2013 | youngbuck
DEK Infinity-Does anyone have any information on why the automatic screen changer would load the same screen in a different position everytime you load and unload? We constantly have to do a search step for the fiducial and most of the time it will e