Design rules padΒΆ
When creating a standard geometry (DIP,SOIC,BGA,PGA,QFP) a set of rules can be used for creating pads with the right padsize, soldermask/paste mask size.
For DIP/PGA the drill size will be used as a reference for the padsize, soldermask size, anti powerpad, inner padsize.
For SOIC/BGA/QFP the padsize will be used as a reference for the pastemask size, soldermask size.
In the geom.ini file there are seven rule name to define the additions to the drill or padsize.
Pad size = Drill size + DefaultRulePad (through hole)
Soldermask = Drill size + DefaultRuleSolderMask_TH (through hole)
Anti power pad = Drill size + DefaultRuleAntiPowerPad (through hole)
Inner pad = Drill size + DefaultRuleInnerPad (through hole)
Soldermask = Pad size + DefaultRuleSolderMask_SMD (SMD)
Pastemask = Pad size + DefaultRulePasteMask_SMD (SMD)
There is also a rule for the standard clearance: DefaultRuleClearance
