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Add Maxim_TDFN-12-1EP_3x3mm_P0.5mm_EP1.7x2.5mm.kicad_mod footprint

James Fowkes requested to merge jamesfowkes/kicad-footprints:add-maxim-TDFN12-package into master

Addition of Maxim (Analog Devices) TDFN-12 package, 3x3mm, 0.5mm pitch, 2.5x1.7mm pad.

Package drawing Land pattern

Derived from DFN-12-1EP_3x3mm_P0.5mm_EP1.6x2.5mm footprint with following changes:

  • Size of pads
  • X co-ordinate of pads
  • Size of exposed pad
  • 3D model path changed to STEP

See also MR for MAX2220x symbols using this footprint

KLC check footprint script output:

  Violating EC02 - (extended check)
    Pad shape checks
    Rectangular SMD pad
     - Pads 13 are square. If possible, change to round-rect.
  Violating F6.3 - https://klc.kicad.org/footprint/f6/f6.3/
    Pad requirements for SMD footprints
    Pad(s) potentially missing layers
     - Pad '13' missing layer 'Paste'
  Violating F9.3 - https://klc.kicad.org/footprint/f9/f9.3/
    Footprint 3D model requirements
    3D model name is different from footprint name (found 'DFN-12-1EP_3x3mm_P0.5mm_EP2.05x2.86mm', expected 'Maxim_TDFN-12-1EP_3x3mm_P0.5mm_EP1.7x2.5mm')
  • EC02 I am not sure if the current requirement is for rectangle or rounded rectangle exposed pads. The all the exposed pads of other DFN parts in the library have non-rounded corners so I have done the same for consistency.
  • F6.3 Paste apertures are handled as seperate pads for the exposed pad
  • F9.3 Existing 3D model is correct with exception of exposed pad size

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