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SD05 and SD12
Single Line TVS Diode for ESD
Protection in Portable Electronics
PROTECTION PRODUCTS
Description
The SDxx TVS diodes are designed to replace multilayer
varistors (MLVs) in portable applications such as cell
phones, notebook computers, and PDA’s. They offer
superior electrical characteristics such as lower clamp-
ing voltage and no device degradation when compared
to MLVs. The SDxx series TVS diodes are designed to
protect sensitive semiconductor components from
damage or upset due to electrostatic discharge (ESD)
and other voltage induced transient events.
The SDxx is in a SOD-323 package and will protect one
unidirectional line. They are available with working
voltages of 5 volts (SD05) and 12 volts (SD12). These
devices will fit on the same PCB pad area as an 0805
MLV device. They give the designer the flexibility to
protect one line in applications where arrays are not
practical. Additionally, it may be “sprinkled” around the
board in applications where board space is at a pre-
mium.
They may be used to meet the ESD immunity require-
ments of IEC 61000-4-2, Level 4 (±15kV air, ±8kV
contact discharge).
Features
350 Watts peak pulse power (t p = 8/20μs)
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±25kV (air), ±10kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 24A (8/20μs)
Small package for use in portable electronics
Suitable replacement for MLV’s in ESD protection
applications
Protects one I/O or power line
Low clamping voltage
Working voltages: 5V and 12V
Low leakage current
Solid-state silicon-avalanche technology
Mechanical Characteristics
EIAJ SOD-323 package
Molding compound flammability rating: UL 94V-0
Marking : Marking code, cathode band
Packaging : Tape and Reel per EIA 481
Applications
Cell Phone Handsets and Accessories
Microprocessor based equipment
Personal Digital Assistants (PDA’s)
Notebooks, Desktops, and Servers
Portable Instrumentation
Pagers Peripherals
Schematic & PIN Configuration
SOD-323 (Top View)
Revision 07/12/04
1
www.semtech.com
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