Electronics Forum | Thu May 17 09:24:30 EDT 2012 | davef
These notes are from ~2005-6. I remember pictures of the pallets and the reliefs on the stencil. Bob may still have his presentation online. Check his site.
Electronics Forum | Wed May 16 15:40:56 EDT 2012 | davef
Here's some notes from a Bob Willis presentation Assembly of Flexible Circuits with Lead-Free Solder Alloy [Bob Willis leadfreesoldering.com] * Flexible Circuit Construction ** Base Material - 0.05mm Copper 18/18 um ESPANEX from Holders Technologies
Electronics Forum | Thu Jan 14 21:24:35 EST 1999 | Bernie
Due to an foul up on my part, a circuit board ECO snuck up on me and I have a solder paste stencil that doesn't quite match the board. Two pads are off by about half a pad each. Can the solder paste stencil be modified? If so, what is the technique
Electronics Forum | Thu Sep 12 10:45:29 EDT 2002 | pbarton
We have used a laser cut stencil 0.15mm (0.006") thick with 0.3mm (0.012") square apertures radiused in the corners 0.06mm (0.0025") to aid paste release. This approach with the (type 3) paste we use has proven successful on thousands of devices plac
Electronics Forum | Thu Mar 29 13:06:07 EST 2001 | billschreiber
Hello again Mike, First, I apologize to the people that have been put through this exercise. However, I cannot let you continue to misrepresent my company. Your continued attempt to cloud this issue by referring solely to the U.S. EPA�s Verificati
Electronics Forum | Wed Mar 28 17:22:18 EST 2001 | billschreiber
Hello Mike, Let me try to explain the Certification vs. Verification for you. There are two EPA programs. The California Environmental Protection Agency's Certification Program where Cal/EPA Certifies the entire cleaning process for environmental sa
Electronics Forum | Wed Jan 20 22:46:44 EST 1999 | Bernie
Thanks for the info. I modified the stencil, ran the boards, and just got a new stencil. Life is good again. Bernie | Due to an foul up on my part, a circuit board ECO snuck up on me and I have a solder paste stencil that doesn't quite match the boa
Electronics Forum | Wed Aug 16 12:49:30 EDT 2000 | Bill Schreiber
Phil, I know it must be frustrating to try and weed through all of the hype that is put out by various stencil cleaner manufacturers. However, there is some impartial published data available. An article by Richard Clouthier (now with Photo Stenc
Electronics Forum | Fri Jan 15 08:43:43 EST 1999 | Mike McM
Bernie, If the pads are for a chip component and only about a half a pad off without anything else in the misregistered area, go ahead and use the stencil as is. Surface tension of the solder at liquidus should cause it to wick back to the pad, even
Electronics Forum | Fri Jan 15 09:11:28 EST 1999 | Steve Gregory
| Due to an foul up on my part, a circuit board ECO snuck up on me and I have a solder paste stencil that doesn't quite match the board. Two pads are off by about half a pad each. | | Can the solder paste stencil be modified? If so, what is the tec
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