Table 16.2 lan9312 128-xvtqfp dimensions, Datasheet – SMSC LAN9312 User Manual
Page 457
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
457
Revision 1.4 (08-19-08)
DATASHEET
Notes:
1.
All dimensions are in millimeters unless otherwise noted.
2.
Dimensions b & c apply to the flat section of the lead foot between 0.10 and 0.25mm from the lead tip. The
base metal is exposed at the lead tip.
3.
Dimensions D1 and E1 do not include mold protrusions. Maximum allowed protrusion is 0.25mm per side. D1
and E1 are maximum plastic body size dimensions including mold mismatch.
4.
Dimensions D2 and E2 represent the size of the exposed pad. The exposed pad shall be coplanar with the
bottom of the package within 0.05mm.
5.
The pin 1 identifier may vary, but is always located within the zone indicated
.
Table 16.2 LAN9312 128-XVTQFP Dimensions
MIN
NOMINAL
MAX
REMARKS
A
-
-
1.20
Overall Package Height
A1
0.05
-
0.15
Standoff
A2
0.95
1.00
1.05
Body Thickness
D/E
15.80
16.00
16.20
X/Y Span
D1/E1
13.80
14.00
14.20
X/Y Plastic Body Size
D2/E2
6.35
6.50
6.65
X/Y Exposed Pad Size
L
0.45
0.60
0.75
Lead Foot Length
b
0.13
0.18
0.23
Lead Width
c
0.09
-
0.20
Lead Foot Thickness
e
0.40 BSC
Lead Pitch
ddd
0.00
-
0.07
True Position Spread
ccc
-
-
0.08
Coplanarity
Figure 16.4 LAN9312 128-XVTQFP Recommended PCB Land Pattern