78Q2123/78Q2133 MicroPHY™
10/100BASE-TX Transceiver
RECOMMENDED PCB LAND PATTERN DIMENSIONS
32 Pin - QFN
x
y
e
d
A
G
x
y
e
d
A
G
Recommended PCB Land Pattern Dimensions
SYMBOL
DESCRIPTION
MIN
TYP
MAX
e
x
Lead pitch
0.50 mm
0.28 mm
0.69 mm
3.00 mm
0.28 mm
y
d
A
G
See Note 1
3.78 mm
3.93 mm
Note 1: Do not place unmasked vias in region denoted by dimension “d”.
Note 2: Soldering of bottom internal pad not required for proper operation of either
commercial or industrial temperature rated versions.
MECHANICAL SPECIFICATIONS – Dimensions in mm
Page: 38 of 42
© 2009 Teridian Semiconductor Corporation
Rev 1.5