Electronics Forum: design (Page 131 of 537)

FDA Approval

Electronics Forum | Tue Feb 25 17:46:35 EST 2003 | davef

And the really sad part about that is: Some organizations actually REQUIRED a institutionally myopic organization like the FDA to go "Hello, design has a BIG impact on quality and you HAVE to pay more attention to that area".

TSOP40 Lead pitch 0.50mm recommended aperture sizes?

Electronics Forum | Tue Mar 11 09:33:06 EST 2003 | davef

I'm wrong about the MPM AP. I got my model designation crossed-up and was thinking of an older unit. I apologize to MPM for for my unfair criticism of their product.

PCB ESD protection

Electronics Forum | Sat Mar 22 12:18:39 EST 2003 | MA/NY DDave

Hi, As I read and reread, I don't understand your question. Is it a design protection for in use?? Is it packaging while shipping protection?? What is the signifance of the 3Volts?? YiEng, MA/NY DDave

Solder paste dispensing

Electronics Forum | Tue Mar 18 09:09:37 EST 2003 | pjc

The FGLV has a air pressure displacement valve, which is designed for adhesives. A positive displacement valve is better suited for solder pastes. Check with Fuji to see if they offer optional valves.

BGA's Reworks

Electronics Forum | Wed Mar 26 16:05:13 EST 2003 | davef

Ren�: Look here to get started with you efforts: http://developer.intel.com/design/Quality/component/rework.htm

Stencil Design for Resistor Net Array 0402

Electronics Forum | Thu Mar 27 11:49:18 EST 2003 | kenlchin

In printing,the thickness of solder paste perpendicular to the Squegge direction is always lower 1 mil than that parallel to the Squegge direction,so Insufficient Solder may occur.I think you may slow printing speed or widen appertures to resolve it.

I am looking for a good VHDL forum

Electronics Forum | Tue Apr 08 08:39:29 EDT 2003 | davef

Good or not, try these: * http://www.vhdl.org/ * http://www.designers-guide.com/Forum

Vacuum Sealers

Electronics Forum | Thu Apr 24 09:03:19 EDT 2003 | jgregory

Thanks Dave, great info! I will be looking into your recommendations. Our AmeriVacs unit is lacking in the robust design department as far as I'm concerned. I don't like the pliable rubber sealers. They deform too much. Jason Gregory

IPC-2252 Design guideline for RF/Microwave PCBs

Electronics Forum | Wed Apr 23 22:06:46 EDT 2003 | davef

Download it from IPC.org. About as a fast as you can get. They overnight it to you, also.

Solder Joint Microstructure

Electronics Forum | Thu May 01 23:08:37 EDT 2003 | caldon

Dave's point is right on the money. This would be a destructive test..needing microsectioning. Cal Communications Test Design, Inc


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