mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-05 07:06:16 +02:00
f8ff8bbe29
- modules/usb_a_plug_smt.fpd: move the far edge of the signal pads out by 0.2 mm, moving their center by 0.1 mm - modules/INFO: explain why Molex' calculation seems to be questionable
94 lines
2.6 KiB
Plaintext
94 lines
2.6 KiB
Plaintext
#
|
|
# Tags:
|
|
#
|
|
# F Footprint name (must be first)
|
|
# N Data sheet identifier (N tag of BOOKSHELF; can be omitted if equal to F)
|
|
#
|
|
|
|
# TI meandered inverted F antenna
|
|
F: meander
|
|
N: AN043
|
|
|
|
# Mini-USB B receptable (SMT; almost generic)
|
|
F: mini_usb_b
|
|
|
|
# "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
|
|
#
|
|
# Known bugs:
|
|
#
|
|
# - we should distribute the solder paste in an array of small
|
|
# squares instead of just covering the whole center pad.
|
|
# - 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
|
|
|
|
# Common 4-pin crystal SMT package (pins 1 and 4 are on a short side, pin
|
|
# numbering is counter-clockwise)
|
|
F: xtal-4
|
|
N: nx3225sa
|
|
|
|
# 0805 package with six pads
|
|
F: 0805-6
|
|
|
|
#
|
|
# MMCX board-edge (SMT) female jack
|
|
#
|
|
# Design based on Molex 73415-0961, This is also compatible with:
|
|
#
|
|
# Tyco 1408152-1
|
|
# Emerson 135-3711-801
|
|
# Molex 73415-1261
|
|
# Amphenol 262107
|
|
#
|
|
# Note: footprint changes with PCB thickness !
|
|
#
|
|
# Known bugs:
|
|
# - keepout area marker should be on comment layer
|
|
# - pin 2 should be off-center and extend such that proper trace can be
|
|
# connected directly
|
|
#
|
|
F: mmcx-f-edge
|
|
N: 73415-0961
|
|
|
|
# USB A plug for SMT
|
|
#
|
|
# Note: the signal pads are enlarged by 0.2 mm and their center is shifted by
|
|
# 0.1 mm with respect to the reference.
|
|
#
|
|
# According to the data sheet, the leads terminate at (2.00+/-0.10 mm)/2+
|
|
# 2.48 mm = 3.48+/-0.10 mm from the center. The reference footprint puts the
|
|
# edge of the pads at (2.00+/-0.10 mm)/2+2.6 mm = 3.6 mm+/-0.10 mm, so the
|
|
# maximum lead end could be at 3.58 mm while the minimum pad edge could be at
|
|
# 3.5 mm.
|
|
#
|
|
# Assuming that the pad is intended to extend a bit beyond the lead, we need
|
|
# to add 0.2 mm to compensate for these tolerances. (The pad tolerance may not
|
|
# be intended to be used this way, however, we still have to consider small
|
|
# errors in registration, which also amount to about 0.1 mm, so the calculation
|
|
# remains valid.)
|
|
#
|
|
F: usb_a_plug_smt
|
|
|
|
# SOT-323 package with counter-clockweise or clockwise pin assignment
|
|
F: sot-323
|
|
N: mmst3904
|
|
|
|
# U.FL/Micro Coax/... receptacle
|
|
F: u-fl-receptacle
|
|
N: u.fl-receptacle
|