PCB Copper Thickness

Copper thickness, also known as copper weight, is one of the most important factors in the printed circuit board design. Copper weight is the weight of copper in the 1 sq. area. It is defined in ounces (oz/ft2).The current carrying capacity of the printed circuit board entirely depends on the thickness of the copper trace. The copper thickness is also considered while calculating the trace impedance in high speed and RF digital circuits. The copper weight requirements of PCBs can vary as per their current carrying requirements. At Twisted Traces, we offer a variety of copper trace weights to match clients PCB design requirements.

PCB Copper Weights/Thickness Capabilities

At Twisted Traces, we help clients to design their PCBs in any of the following copper weights.

Inner Layer 0.5oz, 1oz, 2oz, 3oz, 4oz, 5oz, 6oz  
Outer Layer 1/3oz, 0.5oz, 1oz, 2oz, 3oz, 4oz, 5oz, 6oz 


  • ½ Oz Copper (0.7 Mils): We can provide the PCB with ½ or 0.5 Oz copper weight on the inner layer. This copper weight is preferred for non-standard or specific circuit boards. ½ Oz is also a regular copper weight preferred for the outer layers of the PCB with 1 Oz copper weight selection.
  • 1 Oz Copper (1.4 Mils): This is a standard copper weight for internal layers, and external layers of the PCB. The finished copper weights will add to 2 Oz.
  • 2 Oz Copper (2.8 Mils): This is a standard internal and external layer copper weight for the PCBs with 3 Oz finished copper weights.

All the copper weights above 2 Oz and up to 6 Oz are offered at special prices. At Twisted Traces, we can build standard, as well as non-standard stack-ups. The non-standard stack-ups feature multiple layers pcbs with varying copper thicknesses. Do you have non-standard stack-up requirements? We can easily help you. You can give us a call on (630)345-5400 at any time of the day to discuss your requirements. If your order requires custom quotes, please approach us at This email address is being protected from spambots. You need JavaScript enabled to view it.. We are well-known for our quick response times. This means your quote requests will be answered in less than 2 hours! Our advanced PCB design capabilities also allow us to offer fast turnaround times in the industry.

Prototype Panel

Quote and order your Prototype Panel PCBs online

Deadlines won't wait for the Co-op Panel to fill for your 1- to 8-layer board? No problem with our 12" X 18" Mini-Panel (working area 9" X 15").Quote and order your PCBs online.


Co-op Panel

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Bare board AND assembly orders can now share a panel to spread the cost – saving everyone money on set up costs as well as materials. Join a 2-layer or 4-layer Co-op Panel (Bare or Finished). These panels fill quickly as they are half the size of our competitors'! Quote and order your PCBs online.


Custom Quote

Quote and order your Custom PCBs online

Ready to take your prototype design to production? Looking for other board materials or a higher layer count? Whatever your requirement, send us your specs and we will send you a custom quote.Quote your Custom PCBs online.


Twisted Traces
725 Nicholas Blvd.
Elk Grove Village, IL 60007
(630) 345-5400

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