mirror of
git://projects.qi-hardware.com/kicad-libs.git
synced 2024-07-02 16:23:16 +03:00
67 lines
1.8 KiB
Plaintext
67 lines
1.8 KiB
Plaintext
#
|
|
# Tags:
|
|
#
|
|
# F Footprint name (must be first)
|
|
# N Data sheet identifier (N tag of BOOKSHELF; can be omitted if equal to F)
|
|
#
|
|
|
|
# Standard rectangular passive components
|
|
F: stdpass
|
|
|
|
# Solder pads and test points
|
|
F: pads
|
|
|
|
# Printed 8:10 card contacs
|
|
F: 8_10-card
|
|
|
|
# Fiducial (1 mm copper pad, 2 mm solder mask clearance)
|
|
F: fiducial
|
|
|
|
# "Generic" simple QFN
|
|
F: qfn
|
|
#
|
|
# The information for these packages comes from various sources:
|
|
#
|
|
# - the C8051F326 data sheet, for the QFN28 footprint (N: mcu)
|
|
# - the AT86F326 data sheet, for the QFN32 package dimensions (N: txrx)
|
|
# - Atmel's general recommendations for QFN land patterns (N: atmel-qfn)
|
|
# - NXP's SOT617-1 and SOT617-3, for package and land pattern:
|
|
# http://www.nxp.com/package/SOT617-1.html
|
|
# http://www.nxp.com/package/SOT617-3.html
|
|
#
|
|
# Solder paste:
|
|
#
|
|
# Footprint Center pad Closest NXP (with complete land pattern)
|
|
# QFN28-Atmel 2.4 mm for further study
|
|
# QFN28-SiLabs 3.3 mm use SiLab's specification
|
|
# QFN32-VHHD-2 3.7 mm between SOT818-1 and SOT788-1
|
|
# QFN32-VHHD-6 3.4 mm SOT818-1
|
|
#
|
|
# From NXP:
|
|
#
|
|
# Package Pad Paste zone Islands Isl. size Isl. gap
|
|
# SiLabs 3.25 3.1 3 x 3 0.9
|
|
# SOT818-1 3.4 1.75 2 x 2 0.75 0.25
|
|
# SOT788-1 4.0 2.4 3 x 3 0.6 0.3
|
|
#
|
|
# NXP rules (AN10365):
|
|
# - paste zone = 35% of pad area
|
|
# - paste coverge = 20% of pad area
|
|
#
|
|
# Our parameters:
|
|
#
|
|
# Package Pad Paste zone Islands Isl. size Isl. gap Zone Coverage
|
|
# QFN32-VHHD-2 3.7 2.15 3 x 3 0.55 0.25 34% 20%
|
|
# QFN32-VHHD-6 3.4 1.95 2 x 2 0.75 0.45 33% 19%
|
|
#
|
|
# Known bugs:
|
|
#
|
|
# - really ought to merge all the various QFN definitions (we have more
|
|
# over at gta02-core) into a single QFN file with a big mean table of
|
|
# everything
|
|
#
|
|
N: sot617-3-lp
|
|
|
|
# "Generic" simple QFP (for now, just for Silabs' C8051F320)
|
|
F: qfp
|