Electronics Forum | Tue Mar 04 08:56:38 EST 2008 | tonyamenson
I talked to a solder paste chemsist and found out a few things. From above (Dave F) states a test for solder paste involving reflow on a non-wettable surface. Commonly known as the solder ball test this test is performed all the time by paste manufa
Electronics Forum | Tue Jul 15 16:12:23 EDT 2008 | boardhouse
Hi Armynski, I sell for an offshore board house, yes, it is common for offshore board shops to fill vias. The bubble is caused by air entrampment within the hole it self, when heat is applied during Hot air and the via is covered on both sides the e
Electronics Forum | Sat Oct 18 08:17:40 EDT 2008 | hussman
Use a Cpk study on your screen printer. Deviation from print to print. Most reutable surface mount machine companies will supply you with their Cpp study they performed on your machine before they shipped it. On ovens use your profiler. You can
Electronics Forum | Sun Nov 23 08:28:16 EST 2008 | orian
Wow im amazed by the amount of replies I got, thank you all for your time. Davef, Mika, and eetour Thank you all for the websites, I've found googling homebrew to be most useful there really is alot of content, too bad I didn't search for that in th
Electronics Forum | Mon Dec 15 16:16:42 EST 2008 | davef
J-STD-001 requires that solderable surfaces of components and connectors be degolded prior to soldering. As proven methods for removal of the gold plating and replacing it with tin/lead, MIL-STD-2000 and J-STD-001 endorse[d] either: * Double dip (two
Electronics Forum | Fri Mar 06 10:32:34 EST 2009 | fountain42
Yes, We've already experienced this same problem. 1) What kind of flux are you using? No Clean? Rosin? OA? 2) If it's OA, What kind of water wash do you do? Do you use DI water? How Hot? Who's machine? What are the pressures? 3) Have you performed a
Electronics Forum | Wed May 06 08:15:39 EDT 2009 | xinxi
Hi all, I understand that this forum is more to surface mount discussion. But I am eager in sorting out the spray fluxer problem. Please provide me with any ideas that you think might cause it. I have a problem in starting up/initialising the wave
Electronics Forum | Tue Jun 02 12:57:15 EDT 2009 | operator
Hello, I have searched endlessly to get a good description of how these are manufactured and exactly how they are supposed to work. I have yet to find anything comprehensive. Our CEM ships our PCBs to us in plain cardboard boxes with Conductive Corr
Electronics Forum | Sun Jul 26 06:31:07 EDT 2009 | hohk
Hi everyone, I need to connect a cylindrical disc device (piezo ceramic sensor) to the PCB trace without using high temp solder. I plan to use "3M™ XYZ-Axis Electrically Conductive Adhesive Transfer Tape 9719" to connect the device to the PCB trace
Electronics Forum | Tue Jul 28 20:11:14 EDT 2009 | hohk
Thanks Davef! 3M's product description of "3M™ XYZ-Axis Electrically Conductive Adhesive Transfer Tape 9719 is suitable for attaching low surface energy (LSE) EMI shields to electronic and electrical devices where high temperature (up to 400C) is re
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