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SR05_05 Datasheet, PDF (1/9 Pages) Semtech Corporation – RailClamp® Low Capacitance TVS Diode Array | |||
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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 electrostatic dis-
charge (ESD), electrical fast transients (EFT), and
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. 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 prevents over-voltage
on the power line, protecting any downstream compo-
nents.
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.
SR05
RailClampï
Low Capacitance TVS Diode Array
Features
 ESD protection to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 24A (8/20µs)
 Array of surge rated diodes with internal TVS Diode
 Protects two I/O lines
 Low capacitance (<10pF) for high-speed interfaces
 Low clamping voltage
 Low operating voltage: 5.0V
 Solid-state silicon-avalanche technology
Mechanical Characteristics
 JEDEC SOT-143 package
 UL 497B listed
 Molding compound flammability rating: UL 94V-0
 Marking : R05
 Packaging : Tape and Reel per EIA 481
Applications
 USB Power & Data Line Protection
 Ethernet 10BaseT
 I2C Bus Protection
 Video Line Protection
 T1/E1 secondary IC Side Protection
 Portable Electronics
 Microcontroller Input Protection
 WAN/LAN Equipment
 ISDN S/T Interface
Circuit Diagram
Schematic & PIN Configuration
Pin 4
Pin 2
Pin 3
4
1
Revision 02/18/05
Pin 1
2
3
SOT-143 (Top View)
1
www.semtech.com
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