Sidactor, Protection thyristors, Teccor – Littelfuse P0080T023G5 User Manual

Page 4: Brand sidactor, Dsl protection devices

SIDACtor

Protection Thyristors

358

Revised: March 28, 2012

Specifications are subject to change without notice.

Please refer to www.littelfuse.com for current information.

Teccor

brand SIDACtor

DSL Protection Devices

P0080T023G5 Application example

The following schematics show alternate protection solutions
for a typical DSL interface that connects to outside wiring.
This surface mount SOT23-5 chip-side solution provides a
minimum footprint solution appropriate for high density card
designs. The P0080T023G5 will protect the interface from
lightning induced surges on the chip-side of the coupling
transformer. This tertiary protector may be preceded by line-
side protection such as the TeleLink over-current protector

and the P0080T023G5 overvoltage protector. GDTs may also
be used on the line side of the coupling transformer. The
flow-through design of the SOT23-5 package is illustrated
below. If the inter winding capacitance of the transformer is
allowing some common mode events to get coupled across,
then the P0080T023G5 can be placed in a three chip mode,
as shown below for additional chip-side protection.

PCB Trace

Ring

Tip

DSL driver chipset