Homebrew PCBs

PCB Trace width calculation tool in Java. Current, voltage, thickness, buried traces or surface. Link to a Via calculator. Based on the latest IPC-2221 specs.

http://www.circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator/

Page of links to various PCB white papers and design tools and info:
http://www.smps.us/pcb-design.html

PCB Design Tutorial.
http://alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdf

PCB Design Guidelines including charts of drill size vs hole size vs plated hole size, conductor width vs resistance, dBm charts, and formulas for conductor capacitance, resistance, inductance, impedance, and microstrip impedance:
http://www.advancedmsinc.com/guidelines.htm

Google for "pcb design rules"
<http://www.google.com/search?rlz=1C1LAVA_enUS363US364&aq=f&sourceid=chrome&ie=UTF-8&q=pcb+design+rules>

PADs Logic 9.0 from Mentor Graphics - EDA with a 150 pin tryout version:
http://www.mentor.com/products/pcb-system-design/

Check out the technical papers from Mentor Graphics on the proper design of mixed signal and microwave PCBs:
http://www.mentor.com/products/pcb-system-design/design-flows/pads/pads-offers

Downloadable books on PADs Logic:
http://www.pdfgeni.com/book/PADs-Logic-pdf.html

Eagle PCB is up to 5.7:
http://www.cadsoftusa.com/index.htm

 Steve Greenfield
Electronic Engineering Technician student
Electronic Technician 20+ years
CET Computers and Consumer Electronics
IPC-A-610D CIS Specialist