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www.semtech.com

SMF3.3

3.3 Volt TVS Array

For ESD and Latch-Up Protection

PROTECTION PRODUCTS

PROTECTION 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.