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Intel
®
IXP45X and Intel
®
IXP46X Product Line of Network Processors
February 2007 HDD
Document Number: 305261; Revision: 004 65
General Layout and Routing Guide—Intel
®
IXP45X and Intel
®
IXP46X Product Line of Network
Processors
Figure 23 and Figure 24 show good and poor design practices for via placement on
surface-mount boards.
Figure 25 shows minimum pad-to-pad clearance for surface-mount passive
components and PGA or BGA components.
Figure 23. Good Design Practice for VIA Hole Placement
B2266-01
25 mils min
25 mils min
25 mils min
Figure 24. Poor Design Practice for VIA Placement
B2267-01
Flush Via min
Potential Bridge min