How to use flex pcb trace width calculator

ByMayo Chen

To use the flex PCB trace width calculator, follow these steps:

  1. Determine the maximum current that the trace will carry. This is typically based on the components used in the circuit and the voltage applied.
  2. Determine the maximum temperature rise that the trace can tolerate. This is typically based on the materials used in the PCB and the environment in which it will be used.
  3. Determine the weight of copper used in the trace. This is typically measured in ounces per square foot and can be found in the PCB specifications.
  4. Determine the thickness of the trace and the dielectric layer. These values can also be found in the PCB specifications.
  5. Plug these values into the formula provided in the previous answer:

Trace Width = (Current Capacity x 0.0173 x Temperature Rise) / (Copper Weight x (1.378 x Trace Thickness + Dielectric Thickness))

  1. Solve for the trace width.
  2. Round the result up to the nearest standard trace width value. Standard trace widths are typically available in increments of 0.001 inches.
  3. Verify that the calculated trace width meets the requirements of the PCB design and adjust as necessary.

Note: Some PCB manufacturers may provide their own trace width calculator that takes into account their specific manufacturing processes and materials. It is recommended to consult with the manufacturer for the most accurate results.

Iflex is Professinal Flex and rigid-flex PCB manufacturer,
welcome to mail us: contact@iflexpcb.com for your any quesiton about Flex and Rigid-Flex PCB.

Contact us now!