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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
tertiary lightning.
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. 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 pre-
vents 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.
Circuit Diagram
SR3.3
RailClamp ?
Low Capacitance TVS Diode Array
Features
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 (<10pF) for high-speed interfaces
Low leakage current (< 1μA)
Low operating voltage: 3.3V
Solid-state technology
Mechanical Characteristics
JEDEC SOT-143 package
Molding compound flammability rating: UL 94V-0
Marking : R3.3
Packaging : Tape and Reel
Applications
Data and I/O lines
Sensitive Analog Inputs
Video Line Protection
Portable Electronics
Microcontroller Input Protection
WAN/LAN Equipment
Schematic & PIN Configuration
Pin 4
4
1
Pin 2
Pin 3
2
3
Pin 1
SOT-143 (Top View)
Revision 01/16/08
1
www.semtech.com
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相关代理商/技术参数
SR3.3.TCT 制造商:Semtech Corporation 功能描述:TVS Diode
SR3.3.TCT-CUT TAPE 制造商:SEMTECH 功能描述:SR Series 15 V 5 pF SMT RailClamp?Low Capacitance TVS Diode Array - SOT-143
SR3.3-LF-T7 制造商:ProTek Devices 功能描述:SR3.3 Series 2 Ch 4.5 pF 15 Vclamp Steering Diode / TVS Array Combo - SOT-143 制造商:ProTek Devices 功能描述:SR3.3 Series 3.3 V Steering Transient Voltage Suppressor Array - SOT-143
SR3.3-T13 制造商:PROTEC 制造商全称:Protek Devices 功能描述:STEERING DIODE/TVS ARRAY COMBO
SR3.3-T7 制造商:PROTEC 制造商全称:Protek Devices 功能描述:STEERING DIODE/TVS ARRAY COMBO
SR3.3TC 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:RailClamp Low Capacitance TVS Diode Array
SR3.3TG 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:RailClamp Low Capacitance TVS Diode Array
SR-30 制造商:Pro'skit 功能描述:All Purpose Precision Scissors