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# PWB Trace Thicknesses

## PWB Trace Thicknesses

(OP)
In looking at PCB / PWB copper trace thicknesses, it seems people talk in terms of 1/2 oz, 1 oz, 2 oz, and 3 oz thick copper. What does that convert to in inches or mm? Thank you in advance for any information. Bill B.

William H. Bernhart, P.E.

I work as a development engineer for AMP - Tyco Electronics located near Harrisburg, PA. I help design interconnections and electrical connectors for aerospace applications.

### RE: PWB Trace Thicknesses

1 oz = .0014 inches thick

Steve Smith
Product Engineer
Staco Energy Products Co.
www.stacoenergy.com

### RE: PWB Trace Thicknesses

(OP)
Thank you!

William H. Bernhart, P.E.

I work as a development engineer for AMP - Tyco Electronics located near Harrisburg, PA. I help design interconnections and electrical connectors for aerospace applications.

### RE: PWB Trace Thicknesses

A further explaination to SteveSmith's answer is that 1oz copper is measured as .0014 thickness as the 1oz copper is evenly spread over a 1 square foot area.  As you would guess, 1/2 oz = .0007, 2oz = .0028, etc. are simply multiples of that value.  Take care...

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