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www.semtech.com
SMF3.3
3.3 Volt TVS Array
For ESD and Latch-Up Protection
PROTECTION PRODUCTSPROTECTION PRODUCTS
Description
Features
Circuit Diagram Schematic & PIN Configuration
Revision 01/15/08
Applications
Mechanical Characteristics
Cellular Handsets and Accessories
Cordless Phones
Personal Digital Assistants (PDAs)
Notebooks and Handhelds
Portable Instrumentation
Digital Cameras
Peripherals
MP3 Players
ESD protection for data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Small package for use in portable electronics
Protects four I/O lines
Working voltage: 3.3V
Low leakage current
Low operating and clamping voltages
Solid-state EPD TVS technology
EIAJ SC70-5L package
Molding compound flammability rating: UL 94V-0
Marking : Marking Code
Packaging : Tape and Reel
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SC70-5L (Top View)
The SMF 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 operat-
ing at 3.3 volts.
The SMF3.3 is a solid-state devices designed specifi-
cally 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 capaci-
tance 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 SMF3.3 may be used to meet the immunity re-
quirements of IEC 61000-4-2, level 4 (±15kV air, ±8kV
contact discharge). The small SC70-5L package
makes them ideal for use in portable electronics such
as cell phones, PDAs, and notebook computers.
