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Trace Spacing Guidelines
|
Voltage Between Conductors (VDC or Peak) |
Minimum Spacing (inches)
| Bare Board
| Assembly
| B1
| B2
| B3
| B4
| A5
| A6
| A7
| 0 thru 15
| .004
| .025
| .025
| .005
| .005
| .005
| .005
| 16 thru 30
| .004
| .025
| .025
| .005
| .005
| .010
| .005
| 31 thru 50
| .004
| .025
| .025
| .005
| .005
| .015
| .005
| 51 thru 100
| .004
| .025
| .060
| .005
| .005
| .020
| .005
| 101 thru 150
| .008
| .025
| .125
| .015
| .015
| .030
| .015
| 151 thru 170
| .008
| .050
| .125
| .015
| .015
| .030
| .015
| 171 thru 250
| .008
| .050
| .250
| .015
| .015
| .030
| .015
| 251 thru 300
| .008
| .050
| .500
| .015
| .015
| .030
| .015
| 301 thru 500
| .010
| .100
| .500
| .030
| .030
| .060
| .030
| More than 500
| .0001
| .0002 /Volt
| .001 /Volt
| .00012 /Volt
| .00012 /Volt
| .00012 /Volt
| .00012 /Volt | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B1 - Internal Conductors
B2 - External Conductors, uncoated, sea level to 10,000 ft.
B3 - External Conductors, uncoated, over 10,000 ft.
B4 - External Conductors, with permanent polymer coating (soldermask).
A5 - External Conductors, with conformal coating over assembly.
A6 - External Component lead/termination, uncoated.
A7 - External Component lead/termination, with conformal coating.
NOTE: This information is provided as a guideline only. All efforts have been made to ensure it is correct, but it is the responsibility of the user to verify the data is correct for their application.
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us Toll Free 888-230-6874 X 121