SR05 Datasheet, PDF (1/9 Pages) Semtech Corporation – RailClamp Low Capacitance TVS Diode Array

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 light-
ning.
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
RailClamp^
Low Capacitance TVS Diode Array
Features
! ESD protection to IEC 61000-4-2, Level 4
! 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
Pin 4
Pin 2
Pin 3
Schematic & PIN Configuration
4
1
Revision 9/2000
Pin 1
2
3
SOT-143 (Top View)
1
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