RCLAMP2502L Datasheet, PDF (1/9 Pages) Semtech Corporation – RailClamp® 2.5V TVS for GbE Applications

PROTECTION PRODUCTS - RailClamp^®
Description
A RailClamp^® is a low capacitance TVS array designed
to protect high speed data interfaces. This 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), CDE (Cable Discharge Events), and Light-
ning.
The unique design incorporates surge rated, low
capacitance steering diodes and a TVS diode in a
single package. During transient conditions, the
steering diodes direct the transient current away from
the protected IC. The internal TVS diode clamps the
transient voltage to a safe level. The low capacitance
array configuration allows the user to protect up to two
high-speed data lines.
The RClamp^®2502L is constructed using Semtech’s
proprietary EPD process technology. The EPD process
provides low stand-off voltages with significant reduc-
tions in leakage current and capacitance over silicon-
avalanche diode processes. They feature a true
operating voltage of 2.5 volts for superior protection.
The RClamp2502L is in a 8-pin SOIC package. The
leads are finished with lead-free matte tin. The combi-
nation of low clamping voltage, high surge capability,
and low loading capacitance makes the RClamp2502L
an ideal solution for protecting GbE systems to the
lightning immunity requirements of GR-1089.
RClamp2502L
RailClamp^®
2.5V TVS for GbE Applications
Features
‹ Transient protection for high-speed data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 24A (1.2/50μs)
‹ Array of surge rated diodes with internal TVS Diode
‹ Protects up to two I/O lines
‹ Low capacitance: <5pF (Line-to-Line)
‹ High surge capability: 40A (tp=8/20μs)
‹ Low operating voltage: 2.5V
‹ Easy layout
‹ Solid-state silicon-avalanche technology
Mechanical Characteristics
‹ JEDEC SO-8 package
‹ Pb-Free, Halogen Free, RoHS/WEEE Compliant
‹ Lead Finish: Matte tin
‹ Molding compound flammability rating: UL 94V-0
‹ Marking : Marking Code, date code
‹ Packaging : Tape and Reel
Applications
‹ 10/100/1000 Ethernet Interfaces
‹ CPE Equipment
‹ GPON Systems
‹ VoIP Phones
‹ Video Surveillance Systems
Functional Circuit Diagram
Pin 1
Pin 2, 3, 6, 7
Pin 4
Revision 10/22/2009
Pin 8
Package Configuration
1.27
12
4.00 6.00
Pin 5
1
5.00
1.75
SO-8 (Max Dimensions in mm)
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