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The Projects Forum Working on an electronics project and would like some suggestions, help or critiques? If you would like to comment or assist others with their projects, this is the place to do it.

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  #1  
Old 10-05-2009, 07:48 PM
steinar96 steinar96 is offline
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Default Need advice: Routing copper trace width

Hey, i'm in need of a rule of thumb when choosing the width for 1oz copper during PCB layout. I'm routing a pcb which is used in a 12W linear regulator.

I used to know about a rule which stated that for every amper going trough the trace you needed aprox x many mil of copper width. atm i can't remember what it was. So i was hoping some of you knew it or had suggestions.

The trace needs to carry a maximum of 1A. The copper i have is 1 oz.

Any help appreciated.
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Old 10-05-2009, 08:11 PM
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StayatHomeElectronics StayatHomeElectronics is offline
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I've found this to be a useful site.

http://circuitcalculator.com/wordpre...th-calculator/

It is a trace width calculator that goes by the current IPC-2221 (formerly IPC-D-275). I have used the IPC specifications for boards for many PCBs.
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Old 10-05-2009, 08:30 PM
steinar96 steinar96 is offline
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thanks, very helpfull tool.
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