Konrad napisal(a):
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Space between traces depend of voltage pass suppose to meet IPC-D-275 Standard. (see Table 3-1)
Voltage Between Minimum Spacing
Conductors Bare Board Assembly
(DC or AC Peak) B1 B2 B3 B4 A5 A6 A7
0-15 .1mm .64mm .64mm .13mm .13mm .13mm .13mm 4mil 25mil 25mil 5mil 5mil 5mil 5mil 16-30 .1mm .64mm .64mm .13mm .13mm .25mm .13mm 4mil 25mil 25mil 5mil 5mil 10mil 5mil 31-50 .1mm .64mm .64mm .13mm .13mm .38mil .13mm 4mil 25mil 25mil 5mil 5mil 15mil 5mil 51-100 .1mm .64mm 1.50mm .13mm .13mm .50mm .13mm 4mil 25mil 60mil 5mil 5mil 20mil 5mil 101-150 .2mm .64mm 3,18mm .38mil .38mil .75mm .38mil 8mil 25mil 125mil 15mil 15mil 30mil 15mil 151-170 .2mm 1.27mm 3,18mm .38mil .38mil .75mm .38mil 8mil 50mil 125mil 15mil 15mil 30mil 15mil 171-250 .2mm 1.27mm 6.4mm .38mil .38mil .75mm .38mil 8mil 50mil 250mil 15mil 15mil 30mil 15mil 251-300 .2mm 1.27mm 1.27mm .38mil .38mil .75mm .38mil 8mil 50mil 50mil 15mil 15mil 30mil 15mil 301-500 .25mm 2.54mm 1.27mm .75mm .75mm 1.50mm .75mm 10mil 100mil 50mil 30mil 30mil 60mil 30mil Greater than 500 0.0025mm .005mm .0254mm .00305mm .00305mm .00305mm .00305mm .1mil/volt .2mil/volt .001/volt .00012mil/volt .00012mil/volt .00012mil/volt .00012mil/voltB1 - Internal Conductors B2 - External conductors, uncoated, sea level to 10.000 feet B3 - External conductors, uncoated, over 10.000 feet B4 - External conductors, with permanent polymer coating (any elevation) A5 - External conductors, with conformal polymer coating over assembly (any elevation) A6 - External conductors, lead/termination, uncoated A7 - External conductors, lead/termination, with conformal coating (any elevation)