SMS3.3 Datasheet, PDF (1/7 Pages) Semtech Corporation – 3.3 Volt TVS Array For ESD and Latch-Up Protection

PROTECTION PRODUCTS
Description
The SMS series of TVS arrays are designed to protect
sensitive electronics from damage or latch-up due to
ESD, lightning, and other voltage-induced transient
events. Each device will protect up to four lines operating
at 3.3 volts.
The SMS3.3 is a solid-state device designed specifically
for transient suppression. It is constructed using
Semtech’s proprietary EPD process technology. The EPD
process provides low standoff voltages with significant
reductions in leakage currents and capacitance over
traditional pn junction processes. They offer desirable
characteristics for board level protection including fast
response time, low clamping voltage and no device
degradation.
The SMS3.3 may be used to meet the immunity require-
ments of IEC 61000-4-2, level 4 (±15kV air, ±8kV
contact discharge). The low cost SOT23-6L package
makes them ideal for use in portable electronics such
as cell phones, PDA’s, and notebook computers.
SMS3.3
3.3 Volt TVS Array
For ESD and Latch-Up Protection
Features
‹ Transient protection for data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 12A (8/20µs)
‹ Protects four I/O lines
‹ Working voltage: 3.3V
‹ Low leakage current (<1µA)
‹ Low clamping voltage
‹ Low capacitance (35pF typical)
‹ Solid-state EPD TVS technology
Mechanical Characteristics
‹ EIAJ SOT23-6L package
‹ Molding compound flammability rating: UL 94V-0
‹ Marking : Marking Code
‹ Packaging : Tape and Reel per EIA 481
Applications
‹ Cell phone Handsets and Accessories
‹ Microprocessor Based Equipment
‹ Personal Digital Assistants (PDA’s) and Pagers
‹ Desktops PC and Servers
‹ Notebook, Laptop, and Palmtop Computers
‹ Portable Instrumentation
‹ Peripherals
‹ MP3 Players
‹ Cordless Phones
Equivalent Circuit Diagram
Schematic & PIN Configuration
Revision 08/11/04
SOT23-6L (Top View)
1
United States Patent No.
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