Generally, when designing a pcb factory, it will consider the PCB wiring width and current. Then what is the relationship between the PCB wiring width and the current? Let's take a look at the relationship between the PCB wiring width and the current.
Calculation method First calculate the cross-sectional area of the track. Generally, the copper foil thickness of many PCB boards is 35um, and then multiply it by the line width to get the cross-sectional area, and then convert it to square millimeters.
There is an empirical value of current density, which is 15-25 A/mm2. T is the maximum temperature rise, the unit is degrees Celsius (the melting point of copper is 1060°C) A is the copper cross-sectional area, the unit is square MIL I is the maximum allowable current, the unit is ampere (amp) 10mil=0.010inch=0.254 can be 1A .
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