ESD SUPPRESSION PRODUCTS BROCHURE Electrostatic Discharge Suppression Products

ESD Suppressor Product Selection Guide ESD Suppression Technologies LITTELFUSE ESD SUPPRESSION TECHNOLOGY COMPARISON Multilayer Varistor (MLVs) Discrete Options Array Options Protection Data Rate Technology Span Keypad/switch, audio, analog video, USB1.1, RS232 Lowest cost; broad discrete offering Keypad/switch, USB1.1, USB2.0, audio, analog video, FireWire 1394, HDMI, Ethernet, MMC interface, LCD module. Lowest peak and clamp voltages USB2.0, FireWire 1394, HDMI, RF antenna Lowest capacitance SPA™ Silicon Protection Arrays When to Choose PulseGuard® ESD Suppressors • The application tolerates...

ABOUT THIS GUIDE Electrostatic Discharge (ESD) is an electrical transient that poses a serious threat to electronic circuits. The most common cause is friction between two dissimilar materials, causing a buildup of electric charges on their surfaces. Typically, one of the surfaces is the human body, and it is not uncommon for this static charge to reach a potential as high as 15,000 volts. At 6,000 static volts, an ESD event will be painful to a person. Lower voltage discharges may go unnoticed, but can still cause catastrophic damage to electronic components and circuits. Choosing the most appropriate...

ESD Suppressor Product Selection Guide Soft Failures Electrical currents due to ESD can change the state of internal logic, causing a system to latch up or behave unpredictably, or cause corruption of a data stream. While this is temporary, it may slow down communications, or require a system reboot in the case of lockup. ESD is characterized by fast rise times and high peak voltages and currents up to 30 amps (per IEC 61000-4-2, level 4), which can melt silicon and conductor traces. However, ESD effects can be more subtle. The three types of damage are: Latent Defects A component or circuit...

DATA PROTOCOL, APPLICATION AND PRODUCT SELECTION The chart below shows the relationship between Data Rates (Protocol), Applications, and Littelfuse ESD suppression products. The top of the chart shows the standard data protocols, associated data rates, and example end applications that may use the protocols, while the body of the chart shows the applicable Littelfuse ESD suppressors for the various data rates, protocols and applications. The characteristic of concern here is capacitance. High capacitance suppression devices will tend to add signal distortion as signal frequencies increase; low...

ESD Suppressor Product Selection Guide COMMON ESD SUPPRESSION SOLUTIONS The following are examples of the implementation of ESD suppression. Contact Littelfuse for additional application assistance and design examples. indicates that the provided solution is lead-free. indicates that the solution meets the requirements of RoHS. Protection of USB 1.1 (full-speed) port Data speeds up to 12 Mbps D+/D-: V0402MHS03 multilayer varistor (3 pF) USB Port 1206L075 D+/D-: SP1001-02 silicon protection array DOutside World Outside World Shield Ground Shield Ground Signal Ground Protection of USB 2.0 (high-speed)...

Protection of High Denition Multimedia Interface (HDMI) port Data speeds up to 1.25 Gbps HDMI: SP3003-04AT silicon protection array HDMI Transmitter or Receiver Outside World Signal Ground Signal Ground Shield Ground Protection of Audio port Left/Right channels less than 30,000 Hz L/R: V14MLA0402 multilayer varistor Headphone Port/ Speaker, Microphone L/R: SP1002-01JTG silicon protection array Audio Codec Headphone Port/ Speaker, Microphone Audio Codec Right Outside World Outside World Signa Grou Shield Ground Signal Ground Shield Ground

ESD Suppressor Product Selection Guide Please refer to this table and the next few pages in selecting the ESD suppressors that may best serve the circuit requirements. Detailed data sheets can be downloaded from our web site www.littelfuse.com PulseGuard® ESD Suppressors Mounting Options Series Name Technology Type Voltage Variable Material Working Voltage Array Package (No. of Lines) EFT: Electrical Fast Transient TVS: Transient Voltage Suppressor Single Line Package Typical Device Capacitance Leakage Current Rated Immunity to IEC 61000-4-2 level 4 Also Rated for EFT or Lightning Bidirectional...

SPATM Silicon Protection Arrays Multilayer Varistors (MLVs) ML, MLE, MHS series SPA™ Silicon Protection Arrays Multilayer Varistors (MLVs) Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount & Thru-Hole Surface Mount Surface Mount Surface Mount Surface Mount Silicon Controlled Rectier / Diode Low Capacitance Diode Arrays Low Capacitance Diode Arrays

ESD Suppressor Product Selection Guide SPATM Silicon Protection Arrays offer a high level of protection (up to 30kV per IEC 61000-4-2) with very low capacitance, leakage current and clamp voltage. For more robust applications, SP03-xx and SP30xx devices are available for EFT and Lightning transient threats per IEC 61000-4-4/5. Operating Leakage ESD Input Voltage Current Package Lines Protection Polarity (VDC) (Max µA) Level(1) Part Number 1. Minimum ESD withstand voltage, tested according to IEC 61000-4-2, level 4 (Contact Discharge). 2. New items to be introduced Q3 2009. Please contact Littelfuse...

PulseGuard® ESD Suppressors offer extremely low capacitance for use in high-speed data circuits (IEEE 1394, USB 2.0, HDMI, DVI, etc.). Available in single-line and multi-line packages, they provide ESD protection while ensuring that signal integrity is maintained. Part Number Part Number Multilayer Varistors (MLVs) MLVs provide board level protection against ESD, EFT, and other transients that occur on power supply, data and control lines. Single line devices are available in popular industry standard formats, and for more efcient board space usage, four-line devices are also available. Some...

As the world's #1 brand in circuit protection Littelfuse offers the broadest and deepest portfolio of circuit protection products and a global network of technical support, backed by more than 80 years of application design expertise. Visit our design support center to access: > Reference Designs > Application Notes > Application Testing > SPICE Models > Local Technical Support > Product Samples > Technical Articles > Certication Documents > Data Sheets WWW.LITTELFUSE.COM/DESIGNSUPPORT Littelfuse offers technologies that protect sensitive electronics and their users against electrostatic discharge...