In the process of PCB design, many beginners may wonder: how wide should this trace be? Why are power lines much thicker than signal lines? Today, we will discuss the important relationship between PCB trace width and current. Why is Trace Width Important? The traces on a PCB are equivalent to “wires” in a circuit. … Read more
1. The calculation method is as follows: First, calculate the cross-sectional area of the track. Most PCB copper foil thickness is 35um (if unsure, you can ask the PCB manufacturer; 1 ounce is 35um, but it is often less than 35um). The cross-sectional area is obtained by multiplying the trace width by the thickness, and … Read more
1. PCB Current and Trace Width The calculation of PCB current-carrying capacity has long lacked authoritative technical methods and formulas. Experienced CAD engineers can make relatively accurate judgments based on personal experience. However, for new CAD users, this can be quite a challenge. The current-carrying capacity of a PCB depends on the following factors: trace … Read more