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Scripted replacement for qfn-36 5x6 (3.6x4.6 EP)

Rene Poeschl requested to merge github/fork/poeschlr/scripted_qfn-36_5x6 into master

This replaces an old handmade footprints that is not used by any symbol right now. (It is allowed to stay as it had all the necessary information to make a scripted one.)

Script PR: pointhi/kicad-footprint-generator#250 https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-qfn/(UHE36)%20QFN%2005-08-1876%20Rev%20%C3%98.pd

screenshot from 2018-12-28 22-03-49

QFN-36-1EP_5x6mm_P0.5mm_EP3.6x4.6mm:
  device_type: 'QFN'
  size_source: 'https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-qfn/(UHE36)%20QFN%2005-08-1876%20Rev%20%C3%98.pdf'
  ipc_class: 'qfn' # 'qfn_pull_back'
  body_size_x:
    nominal: 5
    tolerance: 0.1
  body_size_y:
    nominal: 6
    tolerance: 0.1
  body_height:
    nominal: 0.75
    tolerance: 0.05

  lead_width:
    nominal: 0.25
    tolerance: 0.05
  lead_len:
    nominal: 0.4
    tolerance: 0.1

  EP_size_x:
    nominal: 3.6
    tolerance: 0.1
  EP_size_y:
    nominal: 4.6
    tolerance: 0.1
  EP_num_paste_pads: [3, 4]

  thermal_vias:
    count: [3, 4]
    drill: 0.2
    paste_via_clearance: 0.1
    EP_paste_coverage: 0.6

  pitch: 0.5
  num_pins_x: 8
  num_pins_y: 10

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