Electronics Forum | Tue Aug 30 23:16:33 EDT 2005 | sumxp
Anyone come across pcb fab.house in Asia who is capable of doing 5mils track with 5% tol and 50 ohms impedence?
Electronics Forum | Tue Apr 05 10:39:20 EDT 2011 | tkirk
Thanks! That definitely seemed to help. TK
Electronics Forum | Tue May 30 09:27:08 EDT 2000 | PhilB
More and more PCB fabs are switching from chemical copper to what is called a "black hole" process from McDermitt.In this process a very thin layer of carbon is put on the base material instead of chemical copper. Can anyone tell me about the advanta
Electronics Forum | Wed May 10 16:49:14 EDT 2000 | Michael Parker
I would like informnation regarding this high heat withstanding type material for PCB, also any other types that are compatible. We currently use FR4 but have an application that may require most advanced composition.
Electronics Forum | Thu May 11 06:33:48 EDT 2000 | Cecep Wahyu
Dear, Give me information about Processing of Platting Circuits Board Sincerely, Cecep Wahyu
Electronics Forum | Tue Apr 05 11:59:41 EDT 2011 | grahamcooper22
maybe the pcbs need a proper dry (the quick dry in the reflow oven won't get all the moisture out )...maybe 125 C for 4 hours or speak to the manufacturer to get their recommendations.
Electronics Forum | Fri Apr 08 20:37:09 EDT 2011 | tkirk
Just wanted to say thank you to everyone for your help. We will do a long bake for all future PCBs ordered from this vendor. TK
Electronics Forum | Wed May 10 22:58:52 EDT 2000 | Dave F
Michael: We all make choices. A first pass at yours is: Resin Tg�C Cost FR4 125 1 Tera Functional 135 1.1 Multi Functional 180 1.2 BT Epoxy Blend 210 1.5 Cyanate Ester 250 2 Polyimide 280 3 It's unclear about your meaning of "compat
Electronics Forum | Thu May 11 21:15:01 EDT 2000 | Dave F
Cecep Wahyu: A fairly broad topic for an online forum, don�t you think? 1 People write books on plating. Buy one: "Electroplating: Fundamentals of Surface Finishing" Lowenheim, FA (0070388369) "Graham's Electroplating Engineering Handbook" 4Ed, Dur
Electronics Forum | Thu Mar 31 20:16:31 EDT 2011 | tkirk
We recently decided to try using a different source for our bare boards to save money. On two different batches of PCBs now from the new source, we are seeing beading including some serious enough to short out underneath 0805 parts. We have never re
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