Scripted WSON 8pin 6x5mm with 3.4x4mm EP (replaces #501)

used dfn generator with pull back ipc settings This replaces #501 but uses ipc to arrive at the footprint (compared to the footprint supplied there mine has the pads moved a bit outwards. -> more toe less heel)

Datasheet: http://ww1.microchip.com/downloads/en/AppNotes/S72030.pdf

parameters:

WSON-8-1EP_5x6mm_P1.27mm_EP3.4x4.0mm:
  device_type: 'WSON'
  library: Package_SON
  size_source: 'http://ww1.microchip.com/downloads/en/AppNotes/S72030.pdf'
  ipc_class: 'qfn_pull_back' #'qfn' | 'qfn_pull_back'
  body_size_x:
    nominal: 6
    tolerance: 0
  body_size_y:
    nominal: 5
    tolerance: 0
  lead_width_min: 0.35
  lead_width_max: 0.48
  lead_len_min: 0.5
  lead_len_max: 0.75

  EP_size_x: 3.4
  EP_size_y: 4.0
  EP_num_paste_pads: [2, 2]

  pitch: 1.27
  num_pins_x: 0
  num_pins_y: 4

Edit: Updated parameters with corrected values for lead length