SR3.3
RailClamp
Low Capacitance TVS Diode Array
PROTECTION PRODUCTS
Description
Features
RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SR series has
been specifically designed to protect sensitive components which are connected to data and transmission
lines from overvoltage caused by electrostatic discharge (ESD), electrical fast transients (EFT), and
tertiary lightning.
The unique design of the SR series devices incorporates four surge rated, low capacitance steering diodes
and a TVS diode in a single package. The TVS diode is
constructed using Semtech’s proprietary low voltage
EPD technology for superior electrical characteristics at
3.3 volts.
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 components.
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.
ESD protection to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Array of surge rated diodes with internal
EPD TVS diode
Protects two I/O lines
Low capacitance (
