/usr/share/pcb/m4/bourns.inc is in pcb-common 20110918-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | # -*- m4 -*-
#
# $Id$
# COPYRIGHT
#
# PCB, interactive printed circuit board design
# Copyright (C) 2003, 2005 Dan McMahill
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
#
# Bourns Specific Footprints
# Surface mount trim pots, such as the 3224 series.
#
# $1: canonical name
# $2: name on PCB
# $3: value
# $4: pin 1,3 width (1/100 mm) width is in the direction parallel to the
# $5: pin 1,3 length (1/100 mm) line which intersects pins 1 and 3
# $6: pin 2 width (1/100 mm)
# $7: pin 2 length (1/100 mm)
# $8: spacing from pad center to pad center between 2 and 1,3 (1/100 mm)
# $9: spacing from pad center to pad center between 1 and 3 (1/100 mm)
# $10: package width (1/100 mm)
define(`PKG_BOURNS_GENERIC_POT',
`
# pin 1,3 width, length (1/100 mm)
define(`W13', `$4')
define(`L13', `$5')
# pin 2 width, length (1/100 mm)
define(`W2', `$6')
define(`L2', `$7')
# spacing from pad center to pad center between 2 and 1,3 (1/100 mm)
define(`S12', `$8')
# spacing from pad center to pad center between 1 and 3 (1/100 mm)
define(`S13', `$9')
# package width (1/100 mm)
define(`WIDTH', `$10')
# silkscreen width (mils)
define(`SILKW', `10')
# how much space to leave around the part before the
# silk screen (mils)
define(`SILKS', `8')
# lower right corner for silk screen (mil)
ifelse(eval(L2 > L13), 1
define(`SILKX', `eval((S12+L2)*50/254 + SILKS + SILKW/2)'),
define(`SILKX', `eval((S12+L13)*50/254 + SILKS + SILKW/2)')
)
define(`SILKY', `eval((WIDTH/2)*100/254 + SILKS + SILKW/2)')
# refdes text size (mil)
define(`TEXTSIZE', 100)
# x,y coordinates for refdes label (mil)
define(`TEXTX', -SILKX)
define(`TEXTY', `eval(-SILKY - 10 - TEXTSIZE/2)')
Element(0x00 "$1" "`$2'" "$3" TEXTX TEXTY 0 TEXTSIZE 0x00)
(
# pin 1
ifelse(0, eval(W13>L13),
# Pads which have the perpendicular pad dimension less
# than or equal to the parallel pad dimension
Pad(eval( (S12 - L13 + W13)*50/254) eval( S13*50/254)
eval( (S12 + L13 - W13)*50/254) eval( S13*50/254) eval(W13*100/254) "1" 0x100)
,
# Pads which have the perpendicular pad dimension greater
# than or equal to the parallel pad dimension
Pad(eval( (S12 + L13)*50/254) eval((-S13 - W13 + L13)*50/254)
eval( (S12 + L13)*50/254) eval((-S13 + W13 - L13)*50/254) eval(L13*100/254) "1" 0x100)
)
# pin 2
ifelse(0, eval(W2>L2),
# Pads which have the perpendicular pad dimension less
# than or equal to the parallel pad dimension
Pad(eval( (-S12 - L2 + W2)*50/254) 0
eval( (-S12 + L2 - W2)*50/254) 0 eval(W2*100/254) "2" 0x100)
,
# Pads which have the Y (width) pad dimension greater
# than or equal to the X (length) pad dimension
Pad(eval( -S12*50/254) eval((- W2 + L2)*50/254)
eval( -S12*50/254) eval(( W2 - L2)*50/254) eval(L2*100/254) "2" 0x100)
)
# pin 3
ifelse(0, eval(W13>L13),
# Pads which have the perpendicular pad dimension less
# than or equal to the parallel pad dimension
Pad(eval( (S12 - L13 + W13)*50/254) eval(-S13*50/254)
eval( (S12 + L13 - W13)*50/254) eval(-S13*50/254) eval(W13*100/254) "3" 0x100)
,
# Pads which have the perpendicular pad dimension greater
# than or equal to the parallel pad dimension
Pad(eval( (S12 + L13)*50/254) eval((-S13 - W13 + L13)*50/254)
eval( (S12 + L13)*50/254) eval((-S13 + W13 - L13)*50/254) eval(L13*100/254) "3" 0x100)
)
# Silk screen around package
ElementLine( SILKX SILKY SILKX -SILKY SILKW)
ElementLine( SILKX -SILKY -SILKX -SILKY SILKW)
ElementLine(-SILKX -SILKY -SILKX SILKY SILKW)
ElementLine(-SILKX SILKY SILKX SILKY SILKW)
# Mark at the center of the part
Mark(0 0)
)')
# -------------------------------------------------------------------
# EXTRACT_BEGIN
#
## Bourns 3224 Series SMT Trim Pot
#
define(`PKG_BOURNS_3224G', `PKG_BOURNS_GENERIC_POT(`$1',`$2',`$3',
`127', `127', `200', `127', `520', `230', `480')')
define(`PKG_BOURNS_3224J', `PKG_BOURNS_GENERIC_POT(`$1',`$2',`$3',
`130', `200', `200', `200', `400', `230', `480')')
define(`PKG_BOURNS_3224W', `PKG_BOURNS_GENERIC_POT(`$1',`$2',`$3',
`130', `160', `200', `160', `290', `254', `480')')
define(`PKG_BOURNS_3224X', `PKG_BOURNS_GENERIC_POT(`$1',`$2',`$3',
`132', `190', `200', `190', `510', `254', `480')')
# EXTRACT_END
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