PCB线宽电流关系计算公式

内层电流

外层电流内层电流外层电流内层电流外层电流内层电流外层电流30.110.230.180.370.310.610.410.8240.140.280.230.460.380.750.51 1.0150.170.330.270.540.440.890.59 1.1960.190.380.310.610.51 1.010.68 1.3670.210.420.340.680.57 1.130.76 1.5280.230.470.380.750.62 1.250.84 1.6790.250.510.410.820.68 1.360.91 1.82100.270.550.440.890.73 1.460.98 1.96110.290.590.470.950.78 1.57 1.05 2.10120.310.620.51 1.010.84 1.67 1.12 2.24130.330.660.54 1.070.89 1.77 1.19 2.38140.350.700.57 1.130.93 1.87 1.25 2.51150.370.730.59 1.190.98 1.96 1.32 2.63160.380.770.62 1.25 1.03 2.06 1.38 2.76170.400.800.65 1.30 1.08 2.15 1.44 2.89180.420.840.68 1.36 1.12 2.24 1.50 3.01190.440.870.71 1.41 1.17 2.33 1.56 3.1320

0.45

0.90

0.73

1.46

1.21

2.42

1.62

3.25

导线宽度（mil）0.105

铜皮厚度（mm）

0.018

0.035

0.07

内层电流外层电流内层电流外层电流内层电流外层电流内层电流外层电流0.51 1.010.65 1.310.88 1.76 1.27 2.540.62 1.250.81 1.61 1.08 2.16 1.57 3.130.73 1.460.95 1.90 1.27 2.54 1.84 3.680.84 1.67 1.08 2.16 1.45 2.90 2.10 4.200.93 1.87 1.21 2.42 1.62 3.25 2.35 4.701.03 2.06 1.33 2.67 1.79 3.58 2.59 5.181.12 2.24 1.45 2.90 1.95 3.89 2.82 5.641.21 2.42 1.57 3.13 2.10 4.20 3.04 6.091.30 2.59 1.68 3.36 2.25 4.50 3.26 6.521.38 2.76 1.79 3.58 2.40 4.80 3.47 6.951.46 2.93 1.89 3.79 2.54 5.08 3.687.361.54 3.09 2.00 4.00 2.68 5.37 3.897.771.62 3.25 2.10 4.20 2.82 5.64 4.088.171.70 3.40 2.20 4.41 2.96 5.91 4.288.561.78 3.55 2.30 4.60 3.09 6.18 4.478.941.85 3.70 2.40 4.80 3.22 6.44 4.669.321.93 3.85 2.49 4.99 3.35 6.69 4.859.702.00

4.00

2.59

5.18

3.47

6.95

5.03

10.06

0.3

0.5

铜皮厚度（mm）

0.14

0.2