Electronics Forum | Wed Apr 05 22:31:51 EDT 2000 | Dave F
Robert: Out of curiosity, by "BT" do you mean: � Bismaleimide triazine, the stuff used to increase the tg of resins used in some BGA interposers. � British Telecommunications plc, the guys with bad teeth. � BrookTree, the RAMDAC supplier, that�s par
Electronics Forum | Wed Jan 30 15:46:32 EST 2013 | davef
First, look here [http://www.ti.com/lit/ug/snva500/snva500.pdf ] This is the actual pdf from TI, not some cheap-ass reproduction, like the link you gave us. Orange polygons [and other shapes] - copper covered with ENIG * On the edge of the board, bo
Electronics Forum | Thu Oct 01 06:22:48 EDT 2009 | rajeshwara
We approved the Reflow Profile from Cookson Solder Paste Manufacturer we are using. Now I am suspecting on method of vias designing below that QFP.There is exposed pad for that QFP and we print solder paste there , but when i see under x-ray there is
Electronics Forum | Wed May 05 09:23:11 EDT 2004 | InterConn
Hi ACE, I design with a Minimum of 0.40mm Body to Body on 0805 Chip size down for hi volumne products, 0.60mm would be preferred. Regards I/C
Electronics Forum | Mon Jan 21 06:58:41 EST 2019 | kiransahu
Without PCB layout, not much would get done. It is a ubiquitous need across industries; Industrial, consumer, military...Everywhere you look, there are chips soldered to PCBs to create a final product for the end customer. But where did we all learn
Electronics Forum | Tue May 30 08:07:56 EDT 2000 | David Lazarus
I am a senior industrial engineering student at the University of South Florida. For my Facility Design class, my team has chosen to design a PCA plant that will make one product. We are looking for an obsolete or in-service circuit board assembly
Electronics Forum | Fri Jun 10 09:02:58 EDT 2005 | ktron
Hi Guys.. Does anybody had experienced with designing the stencil for Right Angle LED without any dewetting problem on the LED termination? Currently our stencil opening is 1:1 and we still got so high reject due to this problem. Pls Advise, thanks
Electronics Forum | Tue Jun 02 21:27:22 EDT 2009 | davef
We've never heard of a situtation where oversized pads caused voiding. Your supplier is correct that the pads on the board should be the same size as the pads on the interposer, but this is to improve reliability issues. Search the fine SMTnet Archi
Electronics Forum | Thu Oct 30 15:07:40 EDT 2008 | jemills
Hello I have a new 0402 pad design on a recent board were building in future. On closer look i thought the pad was a thru hole mount , but upon closer inspection the round pads are for 0402 comps. I had a discussion with the engineer and he said
Electronics Forum | Sat Apr 19 12:00:07 EDT 2003 | modeltech
I am completely new to SMT design and for my next project I plan to use SMT for the first time. Since production volumes of the PCB's will be low, hand soldering is definitely an option, and will be necessary for my prototype PCB assembly. My proble
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