SR2.8TC Ver la hoja de datos (PDF) - Semtech Corporation
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componentes Descripción
Fabricante
SR2.8TC Datasheet PDF : 8 Pages
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PROTECTION PRODUCTS
Description
RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SR series has
been specifically designed to protect sensitive compo-
nents which are connected to data and transmission
lines from overvoltage caused by ESD (electrostatic
discharge), EFT (electrical fast transients), and tertiary
lightning.
The unique design of the SR series devices incorpo-
rates four surge rated, low capacitance steering diodes
and a TVS diode in a single package. The TVS diode is
constructed using Semtech’s proprietary low voltage
EPD technology for superior electrical characteristics at
2.8 volts.
During transient conditions, the steering diodes direct
the transient to either the positive side of the power
supply line or to ground. The internal TVS diode pre-
vents over-voltage on the power line, protecting any
downstream components.
The low capacitance array configuration allows the user
to protect two high-speed data or transmission lines.
The low inductance construction minimizes voltage
overshoot during high current surges.
SR2.8
RailClamp™
Low Capacitance TVS Diode Array
Features
! ESD protection to IEC 61000-4-2, Level 4
! Array of surge rated diodes with internal
EPD TVS diode
! Protects two I/O lines
! Low capacitance (<10pF) for high-speed interfaces
! Low leakage current (< 1µA)
! Low operating voltage: 2.8V
! Solid-state technology
Mechanical Characteristics
! JEDEC SOT-143 package
! Molding compound flammability rating: UL 94V-0
! Marking : R2.8
! Packaging : Tape and Reel per EIA 481
Applications
! 10/100 Ethernet
! Firewire
! Sensitive Analog Inputs
! Video Line Protection
! Portable Electronics
! Microcontroller Input Protection
! WAN/LAN Equipment
Circuit Diagram
Pin 4
Pin 2
Pin 3
Revision 9/2000
Pin 1
Schematic & PIN Configuration
4
1
2
3
SOT-143 (Top View)
1
www.semtech.com
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