Electronics Forum | Tue Jun 08 17:12:42 EDT 2010 | flipit
Kic Thermal used Pyropel. Cut with a razor blade and glue together with a good Dow Corning high temperature silicone. You can buy Pyropel in various thicknesses. It is not cheap. $100.00 for a 24" X 24" X 3/16" sheet. You can buy at McMaster Car
Electronics Forum | Fri Jun 11 03:14:03 EDT 2010 | muarty
Thanks Dax, We currently employ a stencil aperture design pretty much similar to that you describe. And you are correct in what you say about the thermal demands almost dictating the allowable voiding level. We have suggested to our customer that th
Electronics Forum | Tue Jun 15 22:31:06 EDT 2010 | Mag10
Depending on the how you plug the via, the void level can significantly affected. If you have via plugged from the bottom side; i.e. opposite side of the component, you will see alot of void due to entrapped air in the via hole. I found work best wh
Electronics Forum | Mon Jun 14 10:23:53 EDT 2010 | pcrane
I have CCA that has a SN100C HASL coating that I am wave soldering with SbPb. I have mounting pad areas on the CCA that are masked with a pallet during reflow so they are not exposed to the solder. The mounting pads are turning gray in some areas of
Electronics Forum | Thu Jun 17 10:22:51 EDT 2010 | floydf
Last July I posted a query about reflowing leaded paste to gold plated boards, I wasn't getting a good reflow. The answer that seemed to work was dwelling the board at reflow for the maximum recommended amount of time. Would anyone have an opinion on
Electronics Forum | Fri Jun 18 12:40:09 EDT 2010 | stepheniii
Are you talking about mini stencils for individual components? If so we check here first http://www.circuitmedic.com/products/stencils.shtml I think circuit medic only has ones for parts they have done repair work for. Their selection is a bit unu
Electronics Forum | Sat Jun 19 08:07:39 EDT 2010 | fortunetech
If you want to buy a Juki machine or any machine for that matter, then be ready with money in hand and you set the price you are willing to buy at today. In my experience alot of Asian Brokers want your best price up front, and then tell you it's too
Electronics Forum | Thu Jul 01 15:12:16 EDT 2010 | siddharth
Thanks to all for their inputs. @Hexielectronics, I am now trying to assemble the board by attaching it to a frame and removing the frame while waving it. I plan to put the boards back on the frame after the board cools down. Could you explain more
Electronics Forum | Tue Jul 20 15:03:08 EDT 2010 | bigdaddysoy9
Dan, If you are starting a library from scratch, it will probably take a while to program on any machine. Building a library is the most time consuming part. We use ViTechnology machines. They have a generic library that you could use to generate
Electronics Forum | Fri Jun 25 00:16:11 EDT 2010 | leadthree
I got a report from Yageo yesterday with microsections and and and..... result: Cracks I did a test run on boards after ICT, but before coating. They are all ok. Seems the cracking happens somewhere after the ICT. But at that stage all assembly is a
