GX3146 Datasheet, PDF (44/46 Pages) Semtech Corporation – Crosspoint Switch with Trace Equalization and Output De-emphasis

6.2 Package Thermal Data and Information
Table 6-1: Package Thermal Data and Information
Parameter
Package Type
Moisture Sensitivity Level
Junction to Case Thermal Resistance, θ_j-c
Junction to Air Thermal Resistance, θ_j-a (at zero
airflow)
Junction to Board Thermal Resistance, θ_j-b
Pb-free and RoHS Compliant
Value
50mm x 50mm HFC BGA
3
0.31°C/W
N/A. This device requires a heat
sink. See Semtech’s Crosspoint
Design Guide.
2.1°C/W
Yes
6.3 Marking Diagram
Pin 1
Indicator
GX3146
ZZZZZZE3
XXXXXX-YYWW
Instructions:
GX3146
ZZZZZZ
E3
XXXXXX
YYWW
Package Mark
Marking batch work order
information
Pb-free & Green indicator
Assembly batch work order
information
Date Code
Figure 6-2: Marking Diagram
GX3146 146 x 146 3.5Gb/s Crosspoint
Final Data Sheet Rev. 2
GENDOC-056075 March 2013
www.semtech.com
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