PCB Design Rules

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE designrules SYSTEM "eagle.dtd">
<eagle version="9.7.0">
<designrules name="nextpcb-advanced-2L.edru">
<classes>
<class number="0" name="default">
</class>
<class number="1" name="pwr">
</class>
</classes>
<rules>
<rulecategory type="Copper Clearance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Keepout Clearance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Solder-Mask Clearance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Dimension Clearance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Drill Distance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Restrict Clearance" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Minimum Drill Size" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Minimum Copper Width" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Acute Angle" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Air-Wire" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Small Gap" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Wire Stub" manualdrc="yes" livedrc="no"/>
 <rulecategory type="Matched Lengths" manualdrc="yes" livedrc="yes"/>
 <rulecategory type="Via Restrict Clearance" manualdrc="yes" livedrc="yes"/>
 <rule type="Minimum Copper Width" enabled="yes" priority="0" onescope="classes=1" value="0.0635mm" preferredvalue="0.3mm" check_polywidth="no" name="Trace size for Power"/>
 <rule type="Minimum Copper Width" builtin_ruleid="14" enabled="yes" priority="1" value="0.0635mm" preferredvalue="0.2mm" check_polywidth="no" name="minimum-copper-width-1"/>
 <rule type="Minimum Drill Size" enabled="yes" priority="0" onescope="is_via" value="0.15mm" preferredvalue="0.3mm" name="Min Via hole size on 2-layer"/>
 <rule type="Minimum Drill Size" enabled="no" priority="1" onescope="all" value="0.5mm" preferredvalue="0.5mm" name="Min Non-plated holes"/>
 <rule type="Minimum Drill Size" builtin_ruleid="15" enabled="yes" priority="2" value="0.15mm" preferredvalue="0.3mm" name="minimum-drill-size-1"/>
 <rule type="Acute Angle" builtin_ruleid="16" enabled="no" priority="0" name="acute-angle-1"/>
 <rule type="Wire Stub" builtin_ruleid="17" enabled="yes" priority="0" name="wire-stub-1"/>
 <rule type="Air-Wire" builtin_ruleid="19" enabled="yes" priority="0" name="air-wire-1"/>
 <rule type="Matched Lengths" builtin_ruleid="20" enabled="yes" priority="0" tolerance="10mm" gapfactor="2.5" name="matched-lengths-1"/>
 <rule type="Copper Clearance" enabled="no" priority="0" onescope="all" otherscope="all" value="0.25mm" preferredvalue="0.25mm" samesignal="yes" bothscope="all" name="Same-net track spacing"/>
 <rule type="Copper Clearance" builtin_ruleid="0" enabled="yes" priority="1" onescope="is_wire_polygon" otherscope="is_wire_polygon" value="0.0635mm" preferredvalue="0.127mm" samesignal="no" name="copper-clearance-1"/>
 <rule type="Copper Clearance" builtin_ruleid="1" enabled="yes" priority="2" onescope="is_wire_polygon" otherscope="is_pad_smd" value="0.0635mm" preferredvalue="0.127mm" samesignal="no" name="copper-clearance-2"/>
 <rule type="Copper Clearance" builtin_ruleid="2" enabled="yes" priority="3" onescope="is_wire_polygon" otherscope="is_via" value="0.0635mm" preferredvalue="0.127mm" samesignal="no" name="copper-clearance-3"/>
 <rule type="Copper Clearance" builtin_ruleid="3" enabled="yes" priority="4" onescope="is_pad_smd" otherscope="is_pad_smd" value="0.15mm" preferredvalue="0.15mm" samesignal="no" name="copper-clearance-4"/>
 <rule type="Copper Clearance" builtin_ruleid="4" enabled="yes" priority="5" onescope="is_pad_smd" otherscope="is_via" value="0.0635mm" preferredvalue="0.127mm" samesignal="no" name="copper-clearance-5"/>
 <rule type="Copper Clearance" builtin_ruleid="5" enabled="yes" priority="6" onescope="is_via" otherscope="is_via" value="0.0635mm" preferredvalue="0.127mm" samesignal="no" name="copper-clearance-6"/>
 <rule type="Copper Clearance" builtin_ruleid="6" enabled="yes" priority="7" onescope="is_smd" otherscope="is_pad" value="0.0635mm" preferredvalue="0.127mm" samesignal="yes" name="copper-clearance-7"/>
 <rule type="Copper Clearance" builtin_ruleid="7" enabled="yes" priority="8" onescope="is_smd" otherscope="is_via" value="0.0635mm" preferredvalue="0.127mm" samesignal="yes" name="copper-clearance-8"/>
 <rule type="Copper Clearance" builtin_ruleid="8" enabled="yes" priority="9" onescope="is_smd" otherscope="is_smd" value="0.0635mm" preferredvalue="0.127mm" samesignal="yes" name="copper-clearance-9"/>
 <rule type="Dimension Clearance" builtin_ruleid="9" enabled="yes" priority="0" value="0.2mm" preferredvalue="0.4mm" name="dimension-clearance-1"/>
 <rule type="Via Restrict Clearance" builtin_ruleid="21" enabled="yes" priority="0" value="0mil" preferredvalue="0mil" name="via-restrict-clearance-1"/>
 <rule type="Restrict Clearance" builtin_ruleid="10" enabled="yes" priority="0" value="0mil" preferredvalue="0mil" name="restrict-clearance-1"/>
 <rule type="Small Gap" builtin_ruleid="18" enabled="yes" priority="0" name="small-gap-1"/>
 <rule type="Solder-Mask Clearance" builtin_ruleid="11" enabled="no" priority="0" value="0mil" preferredvalue="0mil" check_name="yes" check_value="no" name="solder-mask-clearance-1"/>
 <rule type="Drill Distance" builtin_ruleid="12" enabled="yes" priority="0" value="0.2mm" preferredvalue="0.2mm" name="drill-distance-1"/>
 <rule type="Keepout Clearance" builtin_ruleid="13" enabled="yes" priority="0" value="0mil" preferredvalue="0mil" name="keepout-clearance-1"/>
 </rules>
<param name="mdWireWire" value="0.0635mm"/>
<param name="mdWirePad" value="0.0635mm"/>
<param name="mdWireVia" value="0.0635mm"/>
<param name="mdPadPad" value="0.15mm"/>
<param name="mdPadVia" value="0.0635mm"/>
<param name="mdViaVia" value="0.0635mm"/>
<param name="mdSmdPad" value="0.0635mm"/>
<param name="mdSmdVia" value="0.0635mm"/>
<param name="mdSmdSmd" value="0.0635mm"/>
<param name="mdCopperDimension" value="0.2mm"/>
<param name="mdDrill" value="0.2mm"/>
<param name="msWidth" value="0.0635mm"/>
<param name="msDrill" value="0.15mm"/>
<param name="dpMaxLengthDifference" value="10mm"/>
<param name="dpGapFactor" value="2.5"/>
<description language="en">NextPCB 2-layer design rules (advanced process)

Min trace width: 0.0635 mm (2.5 mil) - FR4 complex designs, general advanced
Min spacing: 0.0635 mm (2.5 mil) - FR4 complex designs, general advanced
Min drill: 0.15 mm (5.91 mil)
Min via: 0.075 mm hole
Surface finishes: HASL, Lead Free HASL, ENIG, OSP, Hard Gold, Electrolytic Gold, Gold Fingers, Immersion Tin, Immersion Silver, ENEPIG
Max board size: 500 x 600 mm

Up to 32 layers, HDI III and any-layer HDI (ELIC). Trace/space by technology: HDI 2.0mil/2.0mil (0.0508mm), heavy copper 3oz 8mil/8mil (0.2032mm), FPC advanced 1.5mil/1.5mil (0.0381mm). Min laser drill microvia 0.075mm, microvia aspect ratio 0.8:1 to 1:1. Min mechanical drill 0.15mm quoted for rigid-flex. Copper up to 10oz outer (heavy copper section) and 4 to 6oz inner; summary banner states up to 6oz outer/4oz inner. Max board size 500x600mm quoted for high-Tg boards. Rigid-flex up to 20 rigid layers plus 8 flex layers. High-speed boards up to 40 layers. Drill aspect ratio up to 20:1. 0.15mm min drill also on rigid-flex section.

Sources:
- https://www.nextpcb.com/advanced-pcb-manufacturing-capabilities (read 2026-09-03)
</description>
<param name="layerSetup" value="(1*16)"/>
<param name="mtCopper" value="0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm"/>
<param name="mtIsolate" value="1.6mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm"/>
<param name="mdViaViaSameLayer" value="6mil"/>
<param name="mnLayersViaInSmd" value="2"/>
<param name="mdSmdStop" value="0mil"/>
<param name="msMicroVia" value="0.3mm"/>
<param name="msBlindViaRatio" value="0.5"/>
<param name="rvPadTop" value="0"/>
<param name="rvPadInner" value="0"/>
<param name="rvPadBottom" value="0"/>
<param name="rvViaOuter" value="0"/>
<param name="rvViaInner" value="0"/>
<param name="rvMicroViaOuter" value="0"/>
<param name="rvMicroViaInner" value="0"/>
<param name="rlMinPadTop" value="0.18mm"/>
<param name="rlMaxPadTop" value="80mil"/>
<param name="rlMinPadInner" value="0.18mm"/>
<param name="rlMaxPadInner" value="20mil"/>
<param name="rlMinPadBottom" value="0.18mm"/>
<param name="rlMaxPadBottom" value="80mil"/>
<param name="rlMinViaOuter" value="0.1mm"/>
<param name="rlMaxViaOuter" value="20mil"/>
<param name="rlMinViaInner" value="0.1mm"/>
<param name="rlMaxViaInner" value="20mil"/>
<param name="rlMinMicroViaOuter" value="0.1mm"/>
<param name="rlMaxMicroViaOuter" value="20mil"/>
<param name="rlMinMicroViaInner" value="0.1mm"/>
<param name="rlMaxMicroViaInner" value="20mil"/>
<param name="psTop" value="-1"/>
<param name="psBottom" value="-1"/>
<param name="psFirst" value="-1"/>
<param name="psElongationLong" value="100"/>
<param name="psElongationOffset" value="100"/>
<param name="mvStopFrame" value="0"/>
<param name="mvCreamFrame" value="0"/>
<param name="mlMinStopFrame" value="0.038mm"/>
<param name="mlMaxStopFrame" value="4mil"/>
<param name="mlMinCreamFrame" value="0mil"/>
<param name="mlMaxCreamFrame" value="0mil"/>
<param name="mlViaStopLimit" value="0.5mm"/>
<param name="srRoundness" value="0"/>
<param name="srMinRoundness" value="0mil"/>
<param name="srMaxRoundness" value="0mil"/>
<param name="slThermalIsolate" value="10mil"/>
<param name="slThermalsForVias" value="0"/>
<param name="checkAngle" value="0"/>
<param name="checkRestrict" value="1"/>
<param name="checkStop" value="0"/>
<param name="checkValues" value="0"/>
<param name="checkNames" value="1"/>
<param name="checkWireStubs" value="1"/>
<param name="checkPolygonWidth" value="0"/>
<param name="useDiameter" value="13"/>
<param name="removeAnnularRing" value="0"/>
<param name="maxErrors" value="50"/>
 </designrules>
</eagle>