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  • The Carrying Capacity of PCB

          The carrying capacity of PCB depends on the following factors: line width, line thickness (copper thickness), allowable temperature rise.

          As we all know, the wider the PCB trace, the greater the current carrying capacity.

          Assuming that under the same conditions, a 10 MIL line can withstand 1A, how much current can a 50MIL wire withstand? Is it 5A?

          The answer, of course, is no.Take a look at the following data from international authorities:


         The unit of line width:Inch(1inch=2.54cm=25.4mm)

         Data sources:MIL-STD-275 Printed Wiring for Electronic Equipment


    Trace Carrying Capacity