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RClamp0502A
RailClamp
®®
®®
®
Low Capacitance TVS Array
PROTECTION PRODUCTS - RailClamp
®®
®®
®
Description
Features
Circuit Diagram Schematic & PIN Configuration
Revision 06/28/2008
The RailClamp
®
series consists of ultra low capacitance
TVS arrays designed to protect high speed data inter-
faces. This series has been specifically designed to
protect sensitive components which are connected to
high-speed data and transmission lines from overvoltage
caused by ESD (electrostatic discharge), CDE (Cable
Discharge Events), and EFT (electrical fast transients).
They are designed for use in applications where board
space is at a premium. Each device requires less than
2.9mm
2
of PCB area and will protect two high speed
data lines.
The monolithic design incorporates surge rated, low
capacitance steering diodes and a TVS diode in a single
package. Each line has a typical capacitance of 0.9pF to
ground and 0.3pF between lines. The capacitance of
each line is well matched for consistant signal balance.
Signal integrity is further preserved with the flow through
design. A connection to the TVS is provided for protec-
tion of external voltage busses, such as those found in
USB applications. This device is optimized for ESD
protection of portable electronics. They may be used to
meet the ESD immunity requirements of IEC 61000-4-2,
Level 4 (±15kV air, ±8kV contact discharge).
The RClamp0502A is in a 6-pin, RoHS/WEEE compli-
ant, SC-89 (SOT-666) package. It measures 1.6 x 1.6
x 0.6mm. The leads are finished with lead-free matte
tin. The small package makes it ideal for use in por-
table electronics such as cell phones, laptops, and
digital still cameras.
Applications
Mechanical Characteristics
USB 2.0 High Speed
10/100/1000 Ethernet Ports
High-Definition Multimedia Interface (HDMI)
Digital Visual Interface (DVI)
Monitors and Flat Panel Displays
Video Graphics Cards
IEEE 1394 Firewire Ports High Speed
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)
Flow through design for ease of layout for high
speed data line application
Protects up to two I/O lines & power line
Low capacitance (<0.9pF) for high-speed interfaces
Ultra-small package requires less than 2.9mm
2
of
PCB area
Low leakage current and clamping voltage
Low operating voltage: 5.0V
Solid-state silicon-avalanche technology
SC-89 (SOT-666) package
RoHS/WEEE Compliant
Lead Finish: matte tin
Molding compound flammability rating: UL 94V-0
Marking: A
Packaging: Tape and Reel
SC-89 6L (Top View)
Pin 1 & 6
Pin 3 & 4
Pin 2
Pin 5
2
1
34
5
6
