smf3.3 Semtech Corporation, smf3.3 Datasheet

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smf3.3

Manufacturer Part Number
smf3.3
Description
Smf3.3 3.3 Volt Tvs Array For Esd And Latch-up Protection
Manufacturer
Semtech Corporation
Datasheet

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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.
Revision 01/15/08
PROTECTION PRODUCTS
PROTECTION PRODUCTS
Description
Circuit Diagram
1
3
2
4
5
1
Features
Mechanical Characteristics
Applications
Schematic & PIN Configuration
For ESD and Latch-Up Protection
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
Cellular Handsets and Accessories
Cordless Phones
Personal Digital Assistants (PDAs)
Notebooks and Handhelds
Portable Instrumentation
Digital Cameras
Peripherals
MP3 Players
1
3
2
SC70-5L (Top View)
3.3 Volt TVS Array
5
4
www.semtech.com
SMF3.3

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smf3.3 Summary of contents

Page 1

... 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 ...

Page 2

... SMF3 ...

Page 3

... Waveform Parameters 8µ 20µ ( SMF3.3 Power Derating Curve 100 125 o Ambient Temperature - Peak Pulse Current - I (A) PP Capacitance vs. Reverse Voltage f = 1MHz ...

Page 4

... START. 030 MHz STOP 000.000000 MHz Analog Crosstalk (I/O to I/O) CH1 S21 LOG 20 dB/ REF 0 dB START. 030 MHz 2008 Semtech Corp. CH1 S21 3 START. 030 MHz STOP 000.000000 MHz 3 4 SMF3.3 Insertion Loss S21, I/O to I/O LOG 3 dB/ REF 0 dB STOP 000.000000 MHz 3 www.semtech.com ...

Page 5

... PROTECTION PRODUCTS Applications Information Device Connection for Protection of Four Data Lines The SMF3.3 is designed to protect up to four unidirec- tional data lines. The device is connected as follows: 1. Unidirectional protection of four I/O lines is achieved by connecting pins and 5 to the data lines. Pin 2 is connected to ground. The ground connection should be made directly to the ground plane for best results ...

Page 6

... PCB, the reflow profile will be determined by the requirements of the solder paste. Therefore, these devices are compatible with both lead-free and SnPb assembly techniques. In addition, unlike other lead-free compositions, matte tin does not have any added alloys that can cause degradation of the solder joint. 6 SMF3.3 www.semtech.com ...

Page 7

... THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 7 SMF3.3 DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM - - - - A .043 - - A1 .000 .004 0.00 A2 .028 .035 ...

Page 8

... Contact Information Phone: (805)498-2111 FAX (805)498-3804 2008 Semtech Corp Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 8 SMF3.3 www.semtech.com ...

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