Add CR32 footprint for sumida inductors. Customize QFN32 for FTDI

CR32 is the sumida series of large SMT wound inductors.

The FTDI footprint has square pads instead of rounded ones; that makes
cutting stencils at PSU a lot easier (it wrecks round pads somehow).

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/packages/CR32.5c b/packages/CR32.5c
new file mode 100644 (file)
index 0000000..3a86bee
--- /dev/null
+++ b/packages/CR32.5c
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+load "footprint.5c"
+import Footprint;
+
+real land_width = 3.3;
+real land_h_gap = 1.8;
+real land_height = 4.0;
+real land_v_gap = 1.8;
+
+real pad_width = (land_width - land_h_gap) / 2;
+real pad_height = (land_height - land_v_gap) / 2;
+
+real pad_x_off = land_h_gap / 2 + pad_width / 2;
+
+real pad_y_off = land_v_gap / 2 + pad_height / 2;
+       
+real package_width = 3.8;
+real package_height = 3.5;
+
+element_start("CR32");
+
+pad_mm(pad_x_off, -pad_y_off, pad_width, pad_height, "1", "1");
+pad_mm(pad_x_off,  pad_y_off, pad_width, pad_height, "1", "1");
+pad_mm(-pad_x_off, pad_y_off, pad_width, pad_height, "2", "2");
+pad_mm(-pad_x_off, -pad_y_off, pad_width, pad_height, "2", "2");
+
+rect(-package_width/2, -package_height/2, package_width, package_height);
+
+element_end();

diff --git a/packages/FTDI-QFN32.py b/packages/FTDI-QFN32.py
new file mode 100755 (executable)
index 0000000..568c7be
--- /dev/null
+++ b/packages/FTDI-QFN32.py
@@ -0,0 +1,136 @@
+#!/usr/bin/python
+# Copyright 2011 by Bdale Garbee <bdale@gag.com>.  GPLv2
+#
+# Program to emit PCB footprint for QFN32 package used by FTDI FT232RQ
+#
+
+# dimensions in mm from the TI cc1111f32.pdf datasheet
+PinWidth = 0.28                
+PinResist = PinWidth + (2 * 0.07)
+PinHeight = (5.8 - 4.1) / 2
+PinSpacing = 0.50
+Overall = 5.80
+GndSquare = 3.70
+CoreSquare = 3.30              # resist gaps and paste spots over ground tab
+PinSquare = 4.10
+
+import sys
+
+# we're going to use the 1/100 of a mil fundamental unit form
+def mm2mils100( mm ):
+       return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
+
+print '# author: Bdale Garbee'
+print '# email: bdale@gag.com'
+print '# dist-license: GPL 2'
+print '# use-license: unlimited'
+
+print 'Element[0x0 "QFN32" "" "" 0 0 0 0 0 100 0x0]'
+print "("
+
+# pad under the chip, must be grounded
+print '   Pad[',\
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(GndSquare), \
+       0, \
+       0, \
+       '"pin33" "33" "square,nopaste"]'
+
+# vias in the ground pad under the chip
+for viarow in range (-1,2):
+  for viacol in range (-1,2):
+    print '   Pin[',\
+       mm2mils100(2 * viacol * CoreSquare / 5), \
+       mm2mils100(2 * viarow * CoreSquare / 5), \
+       2900, \
+       2500, \
+       0, \
+       1500, \
+       '"pin33" "33" 0x0002]'
+
+# break pad under chip into a grid to control the resist and paste masks
+for viarow in range (-2, 3):
+  for viacol in range (-2, 3):
+    if (viarow in (-2, 0, 2)) and (viacol in (-2, 0, 2)):
+      # copper sub-square with resist over vias
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100((CoreSquare)/5), \
+       0, \
+       0, \
+       '"pin33" "33" "square,nopaste"]'
+    else:
+      # copper sub-square without resist
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100((CoreSquare)/5), \
+       0, \
+       mm2mils100((CoreSquare)/5), \
+       '"pin33" "33" "square,nopaste"]'
+      # copper spot to control paste mask generation
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       1500, \
+       0, \
+       mm2mils100((CoreSquare)/5), \
+       '"pin33" "33" "square"]'
+
+# pins
+for pin in range (1,9):
+    print '   Pad[',\
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(-Overall/2 + PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (25-pin), '"%i"' % (25-pin), '"square"]'
+
+    print '   Pad[',\
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(+Overall/2 - PinHeight + PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(+Overall/2 - PinWidth/2), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % pin, '"%i"' % pin, '"square"]'
+
+    print '   Pad[',\
+       mm2mils100(Overall/2 - PinHeight + PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(Overall/2 - PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (17-pin), '"%i"' % (17-pin), '"square"]'
+
+    print '   Pad[',\
+       mm2mils100(-Overall/2 + PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
+       mm2mils100((-4.5 + pin) * PinSpacing), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (24+pin), '"%i"' % (24+pin), '"square"]'
+
+print '   ElementArc[',\
+       mm2mils100(-2.6), \
+       mm2mils100(2.6), \
+       '500 500 0 360 1000 ]'
+print ")"

diff --git a/packages/Makefile b/packages/Makefile
index 494a0559a330e377758a9228efdadb846de9fcc8..2b6ad3c9078cbd16b2ed1d74d95e2f63490baf29 100644 (file)
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -53,7 +53,9 @@ FOOTPRINTS= \
        linear-s8.fp \
        PJ-037A.fp \
        cx1vsm.fp \
-       pklcs1212.fp
+       pklcs1212.fp \
+       CR32.fp \
+       FTDI-QFN32.fp
 
 .5c.fp:
        nickle $*.5c > $@

diff --git a/packages/TO39-4.fp b/packages/TO39-4.fp
new file mode 100644 (file)
index 0000000..b66e0a9
--- /dev/null
+++ b/packages/TO39-4.fp
@@ -0,0 +1,33 @@
+       Element["" "Transistor" "" "TO39" 18800 18800 6000 7000 0 100 ""]
+(
+# The JEDEC drawing shows a pin diameter of 16-21 mils
+#
+#
+#         -----
+#        /  4  /
+# TO39: | 3   1 |     <-- bottom view (supposed to be a circle)
+#        \  2  /
+#         ---- 
+#       
+# NOTE:  some vendors, ST for example, number the pins
+# differently.  Here we follow the JEDEC drawing.
+#
+# the pins are arranged along a 200 mil diameter
+# circle.  The can outline is 315 to 335 mils (320 nom)
+# for the top of the can and 350 to 370 mils (360 nom)
+# for the bottom edge of thecan
+#
+        Pin[0 -10000 5500 3000 6100 3500 "1" "1" "square"]
+        Pin[-10000 0 5500 3000 6100 3500 "2" "2" ""]
+        Pin[0 10000 5500 3000 6100 3500 "3" "3" ""]
+       Pin[10000 0 5500 3000 6100 3500 "4" "4" ""]
+# tab is 29 to 40 mils long, 28 to 34 wide
+# and comes off at an angle of 45 deg clockwise from
+# pin 1 when looking at the top of the board
+        ElementLine [12700 -13900 14800 -16000 1000]
+        ElementLine [13300 -13300 15400 -15400 1000]
+        ElementLine [13900 -12700 16000 -14800 1000]
+        ElementLine [16000 -14800 14800 -16000 1000]
+# x, y, width, height, start angle, delta angle, thickness
+        ElementArc [0 0 18300 18300 0 360 1000]
+        )