/usr/share/pcb/pcblib-newlib/geda/US16.fp is in pcb-common 20110918-7.
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 | # number of pads
# pad width in 1/1000 mil
# pad length in 1/1000 mil
# pad pitch 1/1000 mil
# seperation between pads on opposite sides 1/1000 mil
# X coordinates for the right hand column of pads (1/100 mils)
# pad clearance to plane layer in 1/100 mil
# pad soldermask width in 1/100 mil
# silk screen width (1/100 mils)
# figure out if we have an even or odd number of pins per side
# silk bounding box is -XMAX,-YMAX, XMAX,YMAX (1/100 mils)
# element_flags, description, pcb-name, value, mark_x, mark_y,
# text_x, text_y, text_direction, text_scale, text_flags
Element[0x00000000 "Ultra (Micro?) Small outline package" "" "US16" 0 0 -2000 -6000 0 100 0x00000000]
(
#
# Pad[x1, y1, x2, y2, thickness, clearance, mask, name , pad number, flags]
Pad[ -6102 -6889
-4527 -6889
1181 1000 2181 "1" "1" 0x00000100]
Pad[ -6102 -4921
-4527 -4921
1181 1000 2181 "2" "2" 0x00000100]
Pad[ -6102 -2952
-4527 -2952
1181 1000 2181 "3" "3" 0x00000100]
Pad[ -6102 -984
-4527 -984
1181 1000 2181 "4" "4" 0x00000100]
Pad[ -6102 984
-4527 984
1181 1000 2181 "5" "5" 0x00000100]
Pad[ -6102 2952
-4527 2952
1181 1000 2181 "6" "6" 0x00000100]
Pad[ -6102 4921
-4527 4921
1181 1000 2181 "7" "7" 0x00000100]
Pad[ -6102 6889
-4527 6889
1181 1000 2181 "8" "8" 0x00000100]
Pad[ 6102 6889
4527 6889
1181 1000 2181 "9" "9" 0x00000100]
Pad[ 6102 4921
4527 4921
1181 1000 2181 "10" "10" 0x00000100]
Pad[ 6102 2952
4527 2952
1181 1000 2181 "11" "11" 0x00000100]
Pad[ 6102 984
4527 984
1181 1000 2181 "12" "12" 0x00000100]
Pad[ 6102 -984
4527 -984
1181 1000 2181 "13" "13" 0x00000100]
Pad[ 6102 -2952
4527 -2952
1181 1000 2181 "14" "14" 0x00000100]
Pad[ 6102 -4921
4527 -4921
1181 1000 2181 "15" "15" 0x00000100]
Pad[ 6102 -6889
4527 -6889
1181 1000 2181 "16" "16" 0x00000100]
ElementLine[-7692 -8480 -7692 8480 1000]
ElementLine[-7692 8480 7692 8480 1000]
ElementLine[ 7692 8480 7692 -8480 1000]
ElementLine[-7692 -8480 -2500 -8480 1000]
ElementLine[ 7692 -8480 2500 -8480 1000]
# punt on the arc on small parts as it can cover the pads
ElementArc[0 -8480 2500 2500 0 180 1000]
)
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