Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
Electronics Forum | Thu May 02 20:56:25 EDT 2002 | clunier
I remember reading a magazine article a few years ago that discused using the copper area of a pcb to transfer heat away from large SMT devices. Does anyone know of this article or something similar that I can obtain. The article covered copper area,
Electronics Forum | Fri Dec 17 02:43:24 EST 2010 | grahamcooper22
Ideal storage conditions to stop pcbs absorbing moisture is at less then 5% RH, for example in sealed moisture barrier bags. You mention that storage was at 40~70%...at these levels the pcb will absorb quite a bit of moisture. Your baking time was no
Electronics Forum | Wed May 25 21:03:30 EDT 2011 | thanhnguyen22
Hi All, I am new the PCBA process fabrication. I have found many cracks in the PCB after we have cross sections analysis. The cracking has same kind of pattern. It happens betwen the solder and the PCB, or between the solder and the part, BUT not be
Electronics Forum | Tue May 23 20:39:37 EDT 2000 | Dave F
Scott: Sounds like fun: � Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the test method. � Among things, IPC-TM-650 talks to getting pads off-of boards. For instance: Method 2.4.8 is for
Electronics Forum | Wed Apr 25 23:51:13 EDT 2001 | spchua
Hi, Guy, please check the lamination of the PCB's; or the the BGA rework machine, some things like m/c levelling, and force placement head
Electronics Forum | Wed Jul 18 20:58:54 EDT 2001 | Charles A. Harper
Two more recent books are Electronic Packagind and Interconnection Handbook,Third Edition,2000; and High Performance Printed Circuit Boards,2000.I served as Editor for both.Charlie Harper PS to Dave Fish-Please contact me regarding two new books usef
Electronics Forum | Tue Mar 03 13:04:36 EST 1998 | tom lambert, component engineer
We have been told that we should bakeout FR4 boards prior to assesmbly - i gather from your discussion that you disagree - any details will be sincerely appreciated. Regards.
Electronics Forum | Wed Sep 03 20:51:35 EDT 2003 | davef
Dunno about UK suppliers, how about: * Isola P97 / P27 * Polyclad GI-787 If laminates are so bloody expensive in UK, why not them have made in the States?
Electronics Forum | Thu Dec 23 20:18:01 EST 2004 | davef
Look here: http://www.standardpc.com/hitemp-laminates.htm There is nothing significant in the selection of this supplier's table than others posted on the web.
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