PCB走线线宽和电流的关系

Temp Rise

   10C

    20C

    30C

Copper

1/2

Oz.

  1

Oz.

  2

Oz.

 1/2

Oz.

  1

 Oz.

  2

 Oz.

 1/2

 Oz.

  1

 Oz.

 2

 Oz.

Trace

Width

Maximum Current Amps

.010

.5

1.0

1.4

0.6

1.2

1.6

.7

1.5

2.2

.015

.7

1.2

1.6

0.8

1.3

2.4

1.0

1.6

3.0

.020

.7

1.3

2.1

1.0

1.7

3.0

1.2

2.4

3.6

.025

.9

1.7

2.5

1.2

2.2

3.3

1.5

2.8

4.0

.030

1.1

1.9

3.0

1.4

2.5

4.0

1.7

3.2

5.0

.050

1.5

2.6

4.0

2.0

3.6

6.0

2.6

4.4

7.3

.075

2.0

3.5

5.7

2.8

4.5

7.8

3.5

6.0

10.0

.100

2.6

4.2

6.9

3.5

6.0

9.9

4.3

7.5

12.5

.200

4.2

7.0

11.5

6.0

10.0

11.0

7.5

13.0

20.5

.250

5.0

8.3

12.3

7.2

12.3

20.0

9.0

15.0

24.5