DOC

How to Select an Appropriate ESD Device

By Louise Murray,2014-06-28 09:28
5 views 0
How to Select an Appropriate ESD Device ...

ESD ESD

?2009 Littelfuse, Inc 1

    TM (Silicon Protection Array) portfolio Littelfuse’s SPAIntroduction: offers a wide range of devices to suit the majority of Designers of today’s electronic devices have demanded application needs available in the market today. This more functionality with greater flexibility and higher application guide will steer the designer toward the levels of user interaction. These circumstances have appropriate ESD device for the particular application or helped in driving the development of nanometer chipsets port they’re trying to protect. along with a multitude of user interfaces or ports. The confluence of these two has made electronic devices Some of the applications discussed in this guide are more susceptible to ESD and required the need for a listed below: more robust solution. ? USB1.1 Furthermore, the requirements for “on-chip” ESD ? USB2.0 protection have been lowered to 500V which is well ? HDMI below industry standards. The most common standard ? DVI is the IEC61000-4-2 which is promoted by the ? 10/100/1000 Ethernet International Electrotechnical Commission. This ? eSATA standard defines four levels of protection for system ? 1394a/b protection: ? LVDS ? RS-232/RS-485 Contact Air Peak IEC ? Audio (Speaker/Microphone) Discharge Discharge Current Level ? Keypad/Push button (kV) (kV) ?10% (A) ? LCD/Camera display interfaces 1 ?2 ?2 7.5 2 ?4 ?4 15 Many of these applications will have uses in electronics 3 ?6 ?8 22.5 such as: 4 ?8 ?15 30 ? PC’s The general wave shape each of these levels represents ? PDA’s can be seen below. The IEC ESD pulse is typically ? STB’s characterized by its sub-nanosecond rise time and short ? LCD TV’s duration (i.e. <100ns). Nonetheless, it’s still capable of ? Portable Navigation delivering up to 30A for a Level 4 discharge. ? External Storage ? Keyboards/Mouse ? Mobile Handset/Smart Phone ? Digital Camera ? MP3/PMP ? Portable Medical ? Router/Hub/Modem ? SIM Cards

    Littelfuse’s SPAs are an ideal choice for suppressing ESD as their speed and clamping levels are essential to protect today’s sensitive chipsets unlike the previous MLV and polymer technologies.

    Table of Contents

     TMSPA Series Descriptions ......................................................................................................................... 3

    ?2009 Littelfuse, Inc 2

    Unidirectional and Bidirectional TVS Arrays for ESD Protection ................................................... 3 Low Capacitance Diode Arrays for ESD Protection........................................................................... 5

    Low Capacitance Diode Arrays for Broadband Protection .............................................................. 7 EMI Filter Arrays with ESD Protection .................................................................................................. 8

    SCR/Diode Arrays for ESD Protection .................................................................................................. 9

    Application Specific Device Selection .................................................................................................... 11

    USB1.1 ....................................................................................................................................................... 11 USB2.0 ....................................................................................................................................................... 12 HDMI .......................................................................................................................................................... 13 DVI .............................................................................................................................................................. 14 10/100/1000 Ethernet .............................................................................................................................. 15 eSATA........................................................................................................................................................ 16 1394a/b ...................................................................................................................................................... 17 LVDS .......................................................................................................................................................... 18 RS-232/RS-485 ......................................................................................................................................... 19 Audio (Speaker/Microphone) ................................................................................................................ 20

    Keypad/Push button ............................................................................................................................... 21 LCD/Camera display interfaces............................................................................................................ 22

     TMSPA Series Descriptions

    Unidirectional and Bidirectional TVS Arrays for ESD Protection

    ESD I/O Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=0V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 3

    SOT23

    S0T143 SP05 ?20kV 30pF 2,3,4,5,6 5.5V --- MSOP-8

    SC70

    SC70 SP1001 ?8kV 12pF 2,4,5 5.5V 2A S0T553

    SOT563

    SP1002 ?8kV 5pF 1,2 6V 2A SC70

    SP1003 ?25kV 30pF 1 5V 7A SOD723

    TMSPA Portfolio Series

    Unidirectional and Bidirectional TVS Arrays for ESD Protection (continued)

    ESD I/O Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=0V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 4

    SP1004 ?8kV 5pF 4 6V 2A SOT953

    SP1010 ?8kV 6pF 4 6V 1A μDFN

    SP1011 ?15kV 12pF 4 6V 3A μDFN

    TMSPA Portfolio Series

    Low Capacitance Diode Arrays for ESD Protection

    ESD I/O Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=1.65V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 5

    SP3001 ?8kV 0.65pF 4 6V 2.5A SC70

    SC70 SP3002 ?12kV 0.85pF 4 6V 4.5A SOT23

    μDFN

    SC70

    SOT553 SP3003 ?8kV 0.65pF 2,4 6V 2.5A SOT563

    MSOP-10

    SP3004 ?12kV 0.85pF 4 6V 4A SOT563

    TMSPA Portfolio Series

    Low Capacitance Diode Arrays for ESD Protection (continued)

    ESD I/O Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=1.65V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 6

    SP3010 ?8kV 0.35pF 4 6V 2.5A μDFN

    SP3050 ?20kV 2pF 4 6V 10A SOT23

    SP4001 ?12kV 0.85pF 4 3.3V 4.5A μDFN

     TMSPA Portfolio Series

    Low Capacitance Diode Arrays for Broadband Protection

    ESD I/O Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=1.65V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 7

SP03-?30kV 16pF 2 3.3V 150A SOIC-8 3.3

SP03-6 ?30kV 16pF 2 6V 150A SOIC-8

     TMSPA Portfolio Series

    EMI Filter Arrays with ESD Protection

    ESD Line Cap Lightning # of Package Series Schematic (Example) Level VRWM(V(t=2.5V) Channels =8/20μs) Options RP(Contact)

    ?2009 Littelfuse, Inc 8

    24pF SP6001 ?30kV 4,6 6V N/A μDFN (C=12pF) DIODE

    30pF SP6002 ?30kV 4,6 6V N/A μDFN (C=15pF) DIODE

     TMSPA Portfolio Series

    SCR/Diode Arrays for ESD Protection

    ESD I/O # of Lightning Package Series Schematic (Example) Level V RWMCap Channels (t=8/20μs) Options P(Contact) ?2009 Littelfuse, Inc 9

    30V or SOIC-16 SP720 ?4kV 3pF 14 3A (?15V) PDIP-16

    30V or SOIC-8 SP721 ?4kV 3pF 6 3A (?15V) PDIP-8

    30V or SOIC-8 SP723 ?8kV 5pF 6 7A (?15V) PDIP-8

    20V or SP724 ?8kV 3pF 4 3A SOT23 (?10V)

    TMSPA Portfolio Series

    SCR/Diode Arrays for ESD Protection (continued)

    ESD I/O # of Lightning Package Series Schematic (Example) Level V RWMCap Channels (t=8/20μs) Options P(Contact)

    ?2009 Littelfuse, Inc 10

Report this document

For any questions or suggestions please email
cust-service@docsford.com