PCB焊盘设计PCB StandardsLand Pattern DescriptionWIND RIVER9/5/2002PCB Standards Library SpecificationPadstacks - Through Hole and Connector Libraries1. See Padstacks.pdf Excel spreadsheet for Plated & Non-plated sizes 2. Padstack Features:a. b. c. d. e. Full padstacks include Solder Mask and Assembly data Hole size is 0.3mm larger than lead size All hole sizes are in increments of 0.05mm Pad sizes are gradually scaled up to establish correct current carrying capability Split/Mixed Anti-pad & Custom Thermals are defined on “Inner Layers”3. Non-plated holes have a keepout on All Layers 0.6mm greater than hole size 4. Minimum of 0.30mm space between padsPadstacks ……