SLVU2.8-4 Low Capacitance TVS Array Description The SLVU2.8-4 is low capacitance transient voltage suppressor for high speed data interface that designed to protect sensitive electronics from damage or latch-up due to ESD lightning, and other voltage induced transient events. All pins are rated to withstand 25kv ESD pulses using the IEC 61000-4-2 contact discharge method, which can meet the requirement of level 4. S Feature ¾ 500W peak pulse power (tP = 8/20μs) ¾ SOP-8 package ¾ Working voltage: 2.8V ¾ Low clamping voltage ¾ Low capacitance ¾ RoHS Compliant Transient Protection for High Speed Data Lines to IEC61000-4-2(ESD)±15kV(air),±8kV(Contact) IEC61000-4-4(EFT) 40A(5/50ns) IEC61000-4-5(lightning) 24A(8/20us) Applications ¾ Video/Audio input ¾ WAN/LAN Equipment ¾ Personal Digital Assistant (PDA) ¾ Ethernet - 10/100/1000 Base T Electrical characteristics per line@( unless otherwise specified) Parameter Symbol Conditions Reverse Stand-off Voltage VRWM Reverse Breakdown Voltage VBR It = 1mA Reverse Leakage Current IR VRWM =2.8V, T=25℃ Clamping Voltage VC IPP = 1A, Clamping Voltage Junction Capacitance Min. 3.0 Typ. Max. Units 2.8 V 4.0 V 1 μA tP = 8/20μs 6.0 V VC IPP=5A, tP = 8/20μs 9.0 V CJ VR=0V, f = 1MHz 5.0 pF 3.0 Absolute maximum rating@25℃ Rev.04 Rating Symbol Value Units Peak Pulse Power (tp=8/20μs) Ppp 500 W Operating Temperature TJ -55 to +150 ℃ Storage Temperature TSTG -55 to +150 ℃ 1 www.prisemi.com Low Capacitance TVS Array SLVU2.8-4 Typical Characteristics Fig1. Pulse Waveform Fig2. Power Derating Curve Fig3. Forward Voltage vs. Forward Current Configuration Diagram ¾ Unidirectional Common-Mode Protection (Figure 4) The SLVU2.8-4 provides up to four lines of protection in a common-mode configuration as depicted in figure 4. Circuit connectivity is as follows: Rev.04 z Line 1 is connected to Pin 1 z Line 2 is connected to Pin 7 z Line 3 is connected to Pin 3 z Line 4 is connected to Pin 5 z Pins 2, 4, 6 and 8 are connected to ground Fig4. 2 www.prisemi.com Low Capacitance TVS Array ¾ SLVU2.8-4 Bidirectional Common-Mode Protection (Figure 5) The SLVU2.8-4 provides up to two lines of protection in a common-mode configuration as depicted in figure 5. Circuit connectivity is as follows: z Line 1 is connected to Pins 1 & 8 z Line 2 is connected to Pins 4 & 5 z Pins 2, 3, 6, and 7 are connected to ground ¾ Fig5. Bidirectional differential-Mode Protection (Figure 6) The SLVU2.8-4 provides up to two-line pairs of protection in a differential-mode configuration as depicted in figure 6. Circuit connectivity is as follows: z Line Pair 1 is connected to Pins 1 & 2 z Line Pair 1 is connected to Pins 7 & 8 z Line Pair 2 is connected to Pins 3 & 4 z Line Pair 2 is connected to Pins 5 & 6 ¾ Fig6. Circuit Board Layout Protection Circuit board layout is critical for Electromagnetic Compatibility (EMC) protection. The following guidelines are recommended: z The protection device should be placed near the input terminals or connectors, the device will divert the transient current immediately before it can be coupled into the nearby traces z The path length between the TVS device and the protected line should be minimized. z All conductive loops including power and ground loops should be minimized. z The transient current return path to ground should be kept as short as possible to reduce parasitic inductance. z Rev.04 Ground planes should be used whenever possible. For multilayer PCBs, use ground 3 www.prisemi.com Low Capacitance TVS Array SLVU2.8-4 Product dimension Rev.04 4 www.prisemi.com Low Capacitance TVS Array SLVU2.8-4 IMPORTANT NOTICE and are registered trademarks of Prisemi Electronics Co., Ltd (Prisemi) ,Prisemi reserves the right to make changes without further notice to any products herein. Prisemi makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Prisemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in Prisemi data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Prisemi does not convey any license under its patent rights nor the rights of others. The products listed in this document are designed to be used with ordinary electronic equipment or devices, Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. Website: http://www.prisemi.com For additional information, please contact your local Sales Representative. ©Copyright 2009, Prisemi Electronics is a registered trademark of Prisemi Electronics. All rights are reserved. Rev.04 5 www.prisemi.com