squantorPcbComponentLibrary

Personal component libraries for kicad.

I tend to seperate out my libraries per vendor as each usually have their own flavour of packaging.

Design Rules

General

I try and keep everything metric as possible but usually grids are in imperial format, usually divisions/multiples of 1.27mm. Here is a short overview of the design rules I use for various objects:

• Font size: 0.8mm Width 0.8mm Height, 0.15mm Thickness
• Silkscreen lines are 0.15mm thick
• Version string: VYYYYMMDD

Symbols

• Symbol designator top using the standard symbol designators from wikipedia, Centered on footprint
• Symbol name below, centered on footprint
• Pin, two grid points long
• Pins placed on package item also on two gridpoints layout

Footprints

• Reference on top, front silk screen, name REF, centered on footprint
• Value bottom, front fabrication layer, name footprint name, centered on footprint
• Designators are centered at footprint center, not touching courtyard
• grid: 0.1mm
• Pin one is a small L in front silk with 0.5mm long legs, put on courtyard
• Through holes: metric, with 0.4mm annulus (fits aisler low cost design rules)
• Keep 0.1mm solder mask clearance
• Pads are rounded rectangles with 20 size
• Courtyard thickness is 0.05mm