Electronics Forum | Tue Dec 21 17:56:13 EST 2010 | stepheniii
Am I reading your post correctly? You will print PCBs and not populate them until up to 24 hours later? And you can assemble level 3 components at 30C and 90% humidity, you just have to pro-rate the exposure time. (I don't recommend having those con
Electronics Forum | Thu Dec 16 16:31:21 EST 2010 | swag
We build flex circuits by the 1000's. The fiducial quality has been trouble from day 1 and our machines don't always like to read them. We have worked out some of the kinks thru our PCB supplier but still have problems. Our PNP machines do fairly
Electronics Forum | Fri Mar 18 13:12:12 EDT 2011 | mikeyjryan
Hello, I am looking for advice on getting the best use out of a new offline SPI machine that my company have bought. I am preparing a procedure for production and I would like to get people’s experience of the following: - Procedure for using a offl
Electronics Forum | Fri Mar 25 10:50:01 EDT 2011 | grahamcooper22
3 deg / sec) then the flux can slump from the paste and solder is carried with it off the pad and will form balls. Finally, are your pcbs dry ? Pass a bare one through the reflow oven before you print any paste on it, let it cool and then process as
Electronics Forum | Wed Apr 06 08:18:19 EDT 2011 | don7888
Hi Has anyone managed to accurately produce a spreadsheet or formula that will accurately calculate the amount of boards your SMT line will produce an hour. I work in a high mix low volume industry and we are constantly taking on new jobs but have n
Electronics Forum | Thu May 26 16:41:00 EDT 2011 | scottp
Here's what I do: - Test Surface Insulation Resistance (we're in the high reliability market and use a test significantly harder than IPC's). I also test SIR in combination with other assembly materials like conformal coatings and wave solder flux
Electronics Forum | Thu Jul 21 19:53:20 EDT 2011 | isd_jwendell
Using AIM N.C. paste, just ran 10 panels to test after applying Rain-X to the stencil (pre-clean with IPA). Printing and release were slightly better (maybe my imagination), but not a large difference. Stencil remained cleaner longer. I could not tel
Electronics Forum | Fri Jul 22 13:17:49 EDT 2011 | ehughes
I would be careful with trying Rain-X. Rain-X is a silanol treatment that is not durable. That is why you need to reapply it on a windshield many times. Also you could contaminate the paste as it will come off the stencil during the printing. From
Electronics Forum | Mon Jul 11 09:24:33 EDT 2011 | kahrpr
You need to check some other stencil places all the ones I deal with, Turn them around same day if I get the files early enough. Also i have a California stencil house which gives me 3 extra hours (east coast guy)I only pay extra for the shipping. Th
Electronics Forum | Fri Jun 22 08:36:54 EDT 2012 | jandre1953
Sir: You did not state what kind of screen printer, all the others assumed it was for SMT. We are dealers for ATMA line of screen printing and aux. eqpt. They make a first class, well made press, and are probably the largest in the world now. Over 4,
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