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Subject:	Re: [geda-user] Coilcraft SMD inductor footprint
From:	Stefan Salewski <mail AT ssalewski DOT de>
To:	geda-user AT delorie DOT com
Date:	Tue, 22 Jul 2014 19:31:19 +0200
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On Tue, 2014-07-22 at 15:07 +0200, Filippo Micheletti wrote:
> Hi there,
> I need to use a Coilcraft MSS1278 series SMD inductor, has anyone already
> drawn the corresponding footprint?
> 
> -Filippo-

Please check carefully -- and note that you may desire extended pads for
hand soldering (I used data from pdf)

stefan AT AMD64X2 ~/sfg $ ruby sfg.rb input.txt 
stefan AT AMD64X2 ~/sfg $ cat input.txt
Device = Global
  author = "Stefan Salewski"
  email = "mail AT ssalewski DOT de"
  dist-license = GPL
  use-license = unlimited
  date = "22-JUL-2014"
  elementdir = "./"
  silkwidth = 10 mil
  silkoffset = 10 mil
  textpos = upperleft
  textorientation = horizontal
  refdessize = 100
  mask = 6 mil
  clearance = 10 mil
  p1silkmark = ""
  p1coppermark = "no"

# Quad Flat Packages and similar SMD devices like SO, see http://en.wikipedia.org/wiki/QFP
Device = QFP
	defaultunit = mm
  name = "MSS1278" # name of the footprint -- if left empty then filename is used
  description = "" # detailed description
  desc = "SMT Power Inductors – MSS1278" # short description
  documentation = "http://www.coilcraft.com/pdfs/mss1278.pdf" # source of layout, i.e. URI of datasheet
  pins = 2 # total number of pins
  rows = 1 # number of pins at side of pin one -- 0 is identical to pins/4
  width = 8.5 # separation of the two columns of pads -- center to center. If 0 height is used.
  height = 0 # separation of the two rows of pads -- center to center. If 0 width is used.
  pitch = 0 # distance between adjacent pads -- center to center
  padthickness = 5.5 # should be smaller than pitch
  padlength = 4
  centerpadwidth = 0 # width of additional center pad with number pins+1 -- use 0 to supress
  centerpadheight = 0 # height of additional center pad with number pins+1 -- use 0 to supress
  silkbox = "custom" # inner or outer for autosize, custom for explicit size, otherwise no box
  silkboxwidth = 12 # silkbox width, used if silkbox = custom, no box if value is too small
  silkboxheight = 12 # silkbox height, used if silkbox = custom, no box if value is too small
  ovalpads = "no" # to get ovals use: oval, ovalpads, yes, true, 1
  p1silkmark = "no" # mark pin/pad 1: see global section, or for specific shape: circle, damage, slash
  Generate MSS1278.fp

stefan AT AMD64X2 ~/sfg $ cat MSS1278.fp 
Element["" "SMT Power Inductors – MSS1278" "MSS1278" "" 0 0 -23622 -31122 0 100 ""]
(
  Pad[-16732 -2953 -16732 2953 15748 2000 16948 "1" "1" "square"]
  Pad[16732 -2953 16732 2953 15748 2000 16948 "2" "2" "square"]
  ElementLine[-23622 -23622 -23622 -12327 1000]
  ElementLine[-23622 23622 -23622 12327 1000]
  ElementLine[-23622 -23622 23622 -23622 1000]
  ElementLine[23622 -23622 23622 -12327 1000]
  ElementLine[23622 23622 23622 12327 1000]
  ElementLine[23622 23622 -23622 23622 1000]
  Attribute("name" "MSS1278")
  Attribute("author" "Stefan Salewski")
  Attribute("email" "mail AT ssalewski DOT de")
  Attribute("dist-license" "GPL")
  Attribute("use-license" "unlimited")
  Attribute("date" "22-JUL-2014")
  Attribute("desc" "SMT Power Inductors – MSS1278")
  Attribute("documentation" "http://www.coilcraft.com/pdfs/mss1278.pdf")
)
stefan AT AMD64X2 ~/sfg $ pcb MSS1278.fp 

- Raw text -