Trace
Spacing (mil
Surface Layer
with Solder
Mask (V)
Surface Layer
with No Solder
Clean (V)
Surface Layer
with No Solder
Hygro Dust (V)
Surface Layer
with No Solder
Flux (V)
Internal
Layer (V)
7
3100
1320
620
250
>5000*
10
3500
1480
900
300
>5000*
20
3900
1620
1400
750
>5000*
40
4700
2300
2050
1300
>5000*
60
5000
3360
2820
2050
>5000*
80
>5000*
4160
3700
3000
>5000*
100
>5000*
4720
3850
3650
>5000*
*Note. Dielectric tester maximum voltage = 5000 V dc.
Table I. Trace dielectric properties, breakdown voltage.

 

Trace
Thickness (mil)
Surface Layer
Current No
Solder Mask (A)
Surface Layer
Current with
Solder Mask (A)
Internal Layer
Current
(A)
7
600
900
400
10
900
>1000*
500
12
>1000*
>1000*
600
15
>1000*
>1000*
800
17
>1000*
>1000*
>1000*
20
>1000*
>1000*
>1000*
22
>1000*
>1000*
>1000*
*Note. Surge generator maximum 2 x 10 microseconds, current = 1000 A.
Table II. Trace current properties: 2 x 10 microseconds, 2500 V, 500 A, maximum current capacity.

 

Trace
Thickness (mil)
Surface Layer
Current No
Solder Mask (A)
Surface Layer
Current with
Solder Mask (A)

Internal Layer
Current (A)
7
60
70
40
10
90
120
60
12
120
150
80
15
160
190
100
17
190
>200*
130
20
>200*
>200*
150
22
>200*
>200*
170
*Note. Surge generator maximum.
Table III. Trace current properties: 10 x 1000 microseconds, 1000 V, 100 A, maximum current capacity.

 

Trace
Thickness (mil)
Surface Layer
Current No
Solder Mask
Surface Layer
Current with
Solder Mask

Internal Layer
7
Trace
Trace
Trace
10
Trace
Trace
Trace
12
Trace
Trace
Trace
15
Trace
Fuse
Trace
17
Trace and Fuse
Fuse
Trace and Fuse
20
Fuse
Fuse
Trace and Fuse
22
Fuse
Fuse
Fuse
Table IV. Trace current properties: 600 V, 60 A, 5 seconds, interrupt device.