PCB板中线宽与电流的关系.doc

Temp Rise

10 C

20 C

30 C

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