PCB Prime is not affiliated with the authors of these tools. A few such 3rd party tools are linked below. There are several online tools that can help you determine what thickness, width or length your traces need to be to achieve your target results. If your design requires higher voltages, resistance, or impedances, thicker copper might be necessary. If your files do not include a fab print or other specifications, we'll assume 1oz finished copper weight on all copper layers. Copper Thickness Conversion Chart ozīy a wide margin, most PCBs are made with 1oz copper on each layer. A conversion chart for different units of measure can be found below. Why use a unit of weight to specify a thickness? Great question! If 1oz (28.35 grams) of copper is flattened to evenly cover 1 square foot of surface area (0.093 square meter), the resulting thickness will be 1.37mils (0.0348mm). In the printed circuit board industry, the most common way to express copper thickness on a PCB is in ounces (oz).
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