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Program Name: Express PCB
Function: PCB Layout
License type: Freeware
Link location: External
Description:
You lay out the PCB using their free software, then order the boards via the
internet using the software and a credit card. For double sided boards with plated-thru holes.
Four layer boards are also available for a little more $$.
Their prices are the lowest I've seen.
Browse www.expresspcb.com Electrical Engineering Software HOME Program Name: PCB 123
Function: PCB Layout
License type: Freeware
Link location: External
Description:
You lay out the PCB using their free software, then order the boards via the
internet using the software and a credit card. Similar to Express PCB.
DOWNLOAD NOW Browse www.pcb123.com Electrical Engineering Software HOME Program Name: Qcad
Function: PCB Layout
License type: Demo
Link location: External
Description:
Free demo does 599 pins, but printing and plotting are disabled.
Registered versions start pretty cheap.
Browse the program's README file first Download fromhttps://www.winqcad.com Electrical Engineering Software HOME Program Name: HP Appcad
Function: Toolbox of utilities, does stripline and microstrip transmission lines.
License type: Freeware
Description: Microstrip analysis, Impedance matching, couplers,
cascaded NF and Gain, more. Doesn't like Win98 dos shell. Works under Win2000, or old fassioned DOS.
Link location: Local
download the Windows version DOWNLOAD the old DOS version (if you don't know what this is, you don't want it.)
Browse the program's README file first Electrical Engineering Software HOME Program Name: MWI
Function: Microstrip and Stripline transmission line and coupler design
License type: Freeware
Description:
This great little calculator program from Rogers Corp will:
calculate Zo (characteristic impedance) of Microstrip, stripline, and Offset Stripline (Asymetric Stripline)
Design couplers in stripline.
Since MWI works for asymetric stripline, it is the most capable free package for digital PCB transmission line design.
The user interface is very efficient, but it doesn't have the familiar Windows look and feel.
Rogers corp is in the business of making PCB substrates for microwave circuits, so some of the jargon used
may be new to high speed digital designers.
Link location: External
DOWNLOAD NOW Electrical Engineering Software HOME Program Name: UltraCAD Design, Inc's Calculators
Function: PCB trace calculations.
License type: Freeware
Link location: External
Description:
Freeware calculator programs calculate various properties of PCB traces including
Trace resistance and current vs.temperature rise Calculator
Crosstalk Calculator
Transmission line calculator
"Wire gauge calculator" relates trace width to an equivalent copper wire gauge.
Browsehttps://www.ultracad.com/calc.htm, the calculator page Browsehttps://UltarCad's home page. A PCB service buraeu, worth checking out! Electrical Engineering Software HOME
E-Book FREE PCB High Density Interconnect design Handbook Online
License type: Freeware
Link location: External
Download fromhttps://www.hdihandbook.com/ Advanced Thermal Engineering, Inc.
This is a mail order page for a $50.00 package that predicts printed wiring board (PWB) temperatures in
one of ten metal boxes.
PCB layout software, Electrical Engineering Software, mostly FREE