Electronics Forum | Wed Dec 20 14:27:28 EST 2000 | trgroth
I am unable to find a reliable source to determine the amount of package damage allowable on an SMT coil inductor with a ceramic case. Where can I find information of this nature.
Electronics Forum | Wed Dec 20 14:09:33 EST 2000 | OS
What are the step or critical area that one should check when qualifying PCB first article from a new manufacturer.
Electronics Forum | Mon Dec 18 18:14:20 EST 2000 | Dave F
In older resin materials used in printed circuit board fabrication, there seemed to be a direct relationship between CTE and Tg. Now with more modern resins that reationship no longer appears clear. Please comment.
Electronics Forum | Mon Dec 18 18:08:41 EST 2000 | Dave F
What are the issues with fabricating multilayer PTFE boards? Are these compare with the issues of throught holes and vias in PTFE boards? If not what are these issues?
Electronics Forum | Mon Dec 18 22:36:37 EST 2000 | Charles Harper
The major problems are poor layer to layer bond strength(due to surface tension of most fluoropolymers),and poor cold flow,or dimensional creep of these materials.Please also click on Chapter Author Konsowski,listed above.E-mail form will pop up when
Electronics Forum | Wed Dec 20 10:17:10 EST 2000 | markt
What steps are presently being taken by manufacturers to deal with problems such as layer bond strength, cold flow, and dimensial creep at present? Are there substantial materials research efforts, that you are aware of, in progress that address thes
Electronics Forum | Mon Dec 18 17:56:26 EST 2000 | Dave F
Does the thermal conductivity of a copper trace on a printed circuit board change as the copper oxidizes? Is the oxide on copper a thermal insulator? If so, should it be considered in an analysis of thermal resitivity between a ground plane and a h
Electronics Forum | Mon Dec 18 10:49:20 EST 2000 | marys
When reading about the design of high performance cicuits I have recently encountered references to bromine free circuit boards. What are bromine free circuit boards? When would one find them most useful and who supplies such boards?
Electronics Forum | Mon Dec 18 10:29:02 EST 2000 | Charles Harper
The best,largest,and most complete source is Institute of Printed Circuits( IPC),at answers@ipc.org or 847-790-5340.They also have useful publications which you might inquire about.
Electronics Forum | Mon Dec 18 09:42:44 EST 2000 | floydl
When designing high performance circuit boards are there methods that can be used to improve thermal conductivity without using heat sinks? Can boards be designed in a way that reduces or eliminates the need for sinks?
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