Electronics Forum | Mon Dec 20 07:09:03 EST 1999 | Christopher Lampron
Ron, The simplest way to process fexible PCB's that I have found is to use a process carrier fixture. There are companies that manufacture process carriers that are capable of holding flex through stencil, placement and reflow. The carriers are capab
Electronics Forum | Mon Nov 25 12:32:20 EST 2002 | davef
Now that is a BIG step. Stencil type: * A metal squeegee is fine with stepped stencils. * A rubber squeegee is fine with stepped stencils. Comments on step stencil "keepouts" are: * Use an ample space around the stepped down component pads that is
Electronics Forum | Mon Feb 16 16:37:40 EST 2004 | adlsmt
I would try it dry first, we have never used solvents in our SPM, AP-20 or UP2000. Wipe every 4 to 10 boards. Normally dont have to wipe when using epxoy.
Electronics Forum | Wed Oct 11 18:12:55 EDT 2023 | alexv
I don't think it's a stencil issue. You have an identical inductor next to t=it, that's perfectly straight. You have a problem in that location. I've seen some inductors be affected by slight magnetic forces in the reflow oven. Try to rotate the boar
Electronics Forum | Sun Apr 14 14:13:25 EDT 2002 | davef
I assume you're looking at stencil fab equipment because you need 'faster turns' than you can get from available stencil suppliers. While you're assessing this, consider other alternatives, such as: * Dispensing paste. [A very funny SMTNetter, livin
Electronics Forum | Wed Aug 07 13:21:58 EDT 2024 | spoiltforchoice
I haven't got numbers for older machines. But for recent models DEK is quite clearly bigger than either a Speedprint/Europlacer or an MPM100. Speedprint/Europlacer focuses on its smaller footprint as a selling point, although it looks to me like a R
Electronics Forum | Sun Dec 26 16:13:49 EST 2010 | sam
Hi, Here is a brief synopsis of PNC - PNC has been a quality manufacturer of rigid printed circuit boards for 40 years. Located in Nutley, NJ, we are the largest shop in the North East. PNC provides complete turnkey jobs from design, PCB fabricatio
Electronics Forum | Sun Dec 08 23:40:19 EST 2002 | nonotalent
Hi all, We are currently having problems with > a laser-cut stencil that is electropolished and > nickel plated with 9-mil openings. The paste > does not release well from the apertures. We are > having to wipe after every print. The board is >
Electronics Forum | Tue Apr 26 15:58:04 EDT 2016 | deanm
We have in-house PCB fabrication capability for items such as simple single-sided prototype boards, copper shields and copper stencils for our paint shop. We are having difficulty acquiring small containers of chemicals, especially developer and stri
Electronics Forum | Thu Mar 05 07:49:00 EST 1998 | Steve Gregory
Hi Ron, Your question really opens up a "Pandora's box", but when you say you're not able to print perfectly, what is it exactly that you mean? Is the print lacking volume? Is it mis-registered? Are you bridging? Also, what printers have you used? Do
