450W TVS Diode Arrays from Littelfuse Protect Sensitive Electronics from ESD and Surge Currents

  450W TVS Diode Arrays from Littelfuse Protect Sensitive Electronics from ESD
  and Surge Currents

Designed to protect buttons/keypads, switches, DC power ports, other low-speed

Business Wire

CHICAGO -- February 12, 2013

Littelfuse, Inc., the global leader in circuit protection, has introduced the
450W SD05 (unidirectional) and SD05C (bidirectional) Series General-purpose
TVS Diode Arrays (SPA® Devices), which are designed to replace multilayer
varistors (MLVs) for protecting electronic equipment from damage due to
electrostatic discharge (ESD) and other transient events. Unlike ceramic
devices, which have an inherent wear-out factor, SD05 and SD05C Series devices
are made of silicon diodes, which allows them to absorb repetitive ESD strikes
or surge transients safely without performance degradation. Their low dynamic
resistance (0.5Ω for SD05, 0.6Ω for SD05C) provides up to a 50% reduction in
clamping voltage when compared with competing technologies, and can safely
dissipate induced surge currents up to 30A. Typical applications of these
devices include buttons/keypads, switches, DC power ports, and various other
low-speed I/Os in point-of-sale terminals, test equipment or instrumentation,
medical equipment, desktop/notebook computers, servers, computer peripherals,

“The SD05 and SD05C Series are perfect solutions for medical, industrial,
consumer and computing applications. They allow designers to add ESD and/or
surge protection around the printed circuit board (PCB) as needed,” said Chad
Marak, Director of the Littelfuse TVS Diode Arrays product line. “Their
compact SOD-323 package fits right into the footprint of an 0805 MLV, allowing
manufacturers to replace them in their designs with a SD05 or SD05C device
without requiring a PCB or solder pad change.”

The SD05 and SD05C Series TVS Diode Arrays offer these key features and


  *Lightning: IEC61000-4-5, 30A (tp=8/20μs); ESD: IEC61000-4-2, ±30kV contact
  *Low dynamic resistance of only 0.5Ω (SD05) and 0.6Ω (SD05C)
  *Low leakage of 1µA max.
  *No inherent wear-out factor
  *SOD-323 package fits existing 0805 PCB footprints


  *Robust surge and enhanced ESD protection helps equipment manufacturers
    comply with and exceed regulatory standards, extending equipment life and
    system up-time
  *Provides up to a 50% reduction in clamping voltage compared to competing
    technologies, making them ideal for protecting modern electronics
  *Up to a 97% decrease in leakage current compared to previous technologies,
    greatly increasing battery life
  *Capable of handling multiple ESD strikes or surge transients without
    performance degradation compared to ceramic devices, making for a more
    robust design
  *Offers flexibility to the manufacturer to replace existing 0805 MLVs
    without requiring a PCB or solder pad change

For More Information

If you have questions or require technical support, please contact the
Littelfuse technical support hotline at 1-800-999-9445. For circuit protection
application design ideas, please visit the Application Design Center section
of the Littelfuse website.


The SD05 and SD05C Series TVS Diode Arrays are available in quantities of
3,000 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

Technical Contact

Chad Marak
Director, 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 (SPA^®); 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: littelfuse.com.

Link to high resolution image



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