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 eight 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 down-
stream components.
The SRV05-4 has a low typical capacitance of 3pF and
operates with virtually no insertion loss to 1GHz. This
makes the device ideal for protection of high-speed
data lines such as USB 2.0, Firewire, DVI, and gigabit
Ethernet interfaces.
The low capacitance array configuration allows the user
to protect four high-speed data or transmission lines.
The low inductance construction minimizes voltage
overshoot during high current surges. They may be
used to meet the ESD immunity requirements of IEC
61000-4-2, Level 4 (±15kV air, ±8kV contact dis-
charge).
RailClamp
Low Capacitance TVS Diode Array
Features
ESD 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) 12A (8/20µs)
Array of surge rated diodes with internal TVS Diode
Small package saves board space
Protects four I/O lines
Low capacitance:
3pF
typical
Low clamping voltage
Low operating voltage: 5.0V
Solid-state silicon-avalanche technology
SRV05-4
Mechanical Characteristics
JEDEC SOT-23 6L package
Molding compound flammability rating: UL 94V-0
Marking : V05
Packaging : Tape and Reel
Applications
USB 2.0 Power and Data Line Protection
Video Graphics Cards
Monitors and Flat Panel Displays
Digital Video Interface (DVI)
10/100/1000 Ethernet
Notebook Computers
SIM Ports
ATM Interfaces
IEEE 1394 Firewire Ports
Circuit Diagram
Schematic and PIN Configuration
5
1
3
4
6
2
SOT-23 6L (Top View)
Revision 01/18/2008
1
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