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Littelfuse
SP2555NUTG 2.5V
45A Diode Array
Littelfuse
SMCJ TVS 1500W
Diodes
Designers will not see the same
protection on a device plugging into
your wall at home as the protection a
motor might need in a factory.
"
"
DC
DC inputs are very similar but require different
specific considerations (Figure 6). DC inputs have
different options depending on the power levels
one will see. Protection could be as simple as a
TVS diode for transient protection of a 12V
DC
or
24V
DC
input. For DC inputs of portable electronic
devices, ESD protection can be provided by a
TVS diode array such as the SP11 Series, and
a resettable PPTC can be used for overcurrent
protection. Similarly, to AC-power input ports,
fuses provide overcurrent protection, and
varistors and GDTs provide surge protection to
DC input ports with high voltages, such as 48V
DC
or higher. ■
