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www.RomanBlack.com - web Aug 2006

UltraCAD's PCBTemp.EXE
Freeware program to calculate PCB track resistors and track currents, heating etc.


I did NOT make this software!
It is made by UltraCAD at www.ultracad.com





This freeware program can be used to calculate PCB track heating and current carrying capacity. One of the most handy uses is to calculate PCB track resistors based on the track width and length. These are great for zero cost low-ohms resistors to use as current measuring shunts etc.

Tips

Track width; "Mil" means "thou" or thousandths of an inch.

Copper thickness; most high quality double-sided PCB copper is 2 oz type.

Copper thickness; hobby grade single sided is often 1 oz type.

To calculate a PCB track resistor;

Enter Width = 10 (standard PCB fine track)

Enter Thickness = 2 (standard PCB copper)

Enter Length = 1 inch

Click "recalc" (answer is in ohms per inch of track)

Then check the track does not get too hot;

Enter your max Amps

Click Temp CHANGE (Solve)

Observe temp, check resistance has not risen too much

Try to keep track temp change less than 10'C


Download it

The file pcbtemp.zip contains the PCBTemp.EXE and its 2 help files.

Click HERE to download pcbtemp.zip (16kb)


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