New Littelfuse TVS Diode Arrays Provide 20 Percent Higher Protection against Lightning Induced Surges and ESD

  New Littelfuse TVS Diode Arrays Provide 20 Percent Higher Protection against
  Lightning Induced Surges and ESD

 Robust protection for telecommunications interfaces: T1/E1/T3/E3, HDSL/SDSL,

Business Wire

CHICAGO -- March 26, 2013

Littelfuse, Inc., the global leader in circuit protection, has introduced the
SRDA05 Series TVS Diode Array – SPA^® Diodes. The SRDA05 Series is designed to
protect telecommunications data lines against electrostatic discharge (ESD)
and high surge events, providing a 20 percent higher power and surge handling
capability than competitive devices on the market. By integrating low
capacitance steering diodes with an additional zener diode, the SRDA05 offers
more design margin to electrical threats defined by industry standards and
increased ESD protection without performance degradation.

Typical applications of the SRDA05 Series include tertiary (IC side)
protection for telecommunication interfaces such as T1/E1/T3/E3 data lines,
xDSL interfaces, RS-232/RS-485 interfaces, 10/100/1000 Ethernet interfaces and
video lines. They are also suitable for industrial and medical equipment

“The SRDA05 Series offers the highest surge, power dissipation, and ESD
performance available for devices of this type, providing design engineers the
flexibility to build in additional margin against electrical threats as
defined by industry standards,” said Chad Marak, Director of the LittelfuseTVS
Diode Arrays product line. “For example, when compared with leading
competitors, the SRDA05 Series has a much higher surge rating (30A vs. 25A),
power dissipation rating (600W vs. 500W), and ESD rating (30kV vs. 8kV).”

The SRDA05 Series TVS Diode Arrays offer these key features and benefits:


  *Robust surge protection: Lightning, IEC61000-4-5, 30A (8/20µs); Peak pulse
    power, 600W (8/20µs)
  *Low dynamic resistance (R[DYN]) of only 0.8Ω
  *Low capacitance of 8pF (typ.) from I/O to GND
  *Enhanced ESD capability: IEC61000-4-2, ±30kV contact, ±30kV air


  *20 percent higher power and surge handling capability than similar market
    solutions; offers more design margin to electrical threats defined by
    industry standards
  *Provides optimal clamping voltage for today’s sensitive chipsets,
    protecting them from catastrophic failure and maximizing system
  *Capacitance up to 20 percent lower than similar market solutions; helps to
    preserve signal integrity, minimizes data loss during transmission
  *Enhanced ESD protection far exceeds the highest level of the IEC61000-4-2
    standard (±8kV)


The SRDA05 Series TVS Diode Arrays are available in quantities of 2,500 in
tape and reel packaging. Samples are available now for bulk orders; sample
requests can be placed through authorized Littelfuse distributors worldwide.
For a listing of Littelfuse distributors, please visit

For More Information

Additional information is available on the SRDA05 Series product page and
datasheet. If you have technical questions, please contact: Chad Marak,
Director, Littelfuse TVS Diode Arrays,

About Littelfuse

Founded in 1927, Littelfuse, Inc., the worldwide leader in circuit protection,
offers the industry’s broadest and deepest portfolio of circuit protection
products and solutions. Littelfuse devices protect products in virtually every
market that uses electrical energy, from consumer electronics to automobiles
to industrial equipment. In addition to its Chicago, Illinois, world
headquarters, Littelfuse has more than 30 sales, distribution, manufacturing
and engineering facilities in the Americas, Europe and Asia. Technologies
offered by Littelfuse include Fuses; Gas Discharge Tubes (GDTs); Positive
Temperature Coefficient Devices (PTCs); PulseGuard^® ESD Suppressors;
SIDACtor^® Devices; Silicon Protection Arrays (TVS Diode Array – SPA^®
Diodes); Switching Thyristors; TVS Diodes and Varistors. The company also
offers a comprehensive line of highly reliable Electromechanical and
Electronic Switch and Control Devices for commercial and specialty vehicles
and Sensors for automobile safety systems, as well as Protection Relays and
underground Power Distribution Centers for the safe control and distribution
of electricity.

For more information, please visit the Littelfuse website:

Product Application image (high resolution)

Product Standalone image (high resolution)



Littelfuse, Inc.
Rhonda Stratton, Marketing Communications Manager, 773-628-0644
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