UM6411_16 Datasheet, PDF (5/7 Pages) Union Semiconductor, Inc. – 6 Line ESD/EMI Protection for Color LCD Interfaces

UM6411
Figure 3 shows the recommended device layout. The ground pad vias have a diameter of 0.008 inches
(0.20mm) while the two external vias have a diameter of 0.010 inches (0.250mm). The internal vias
are spaced approximately evenly from the center of the pad. The designer may choose to use more
vias with a smaller diameter (such as 0.005 inches or 0.125mm) since changing the diameter of the
via will result in little change in inductance (i.e. the log function in Equation 2 in highly insensitive to
parameter d) .
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