RClamp 3354S Low Voltage RClamp Surge Protection for GbE Interfaces PROTECTION PRODUCTS - RailClamp Description Features RailClamp TVS diodes are speci cally designed to u Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) 30kV (air), 30kV (contact) protect sensitive components which are connected to IEC 61000-4-4 (EFT) 40A (5/50ns) high-speed data and transmission lines from IEC 61000-4-5 (Lightning) 25A (8/20s) overvoltage caused by ESD (electrostatic discharge), u Array of surge rated diodes with internal TVS Diode CDE (cable discharge events), and EFT (electrical fast u Protects up to four I/O lines transients). u Low capacitance (<5pF) for high-speed interfaces The RClamp 3354S incorporates surge rated, low u Low Dynamic Resistance: 0.25 Ohms capacitance steering diodes and a TVS diode in a single u Low operating voltage: 3.3V package. Each device will protect up to four high-speed u Solid-state silicon-avalanche technology lines. The RClamp3354S can withstand a high level of surge current (25A, 8/20us) while maintaining a low loading capacitance of less than 5pF. The high surge capability means it can be used in high threat environ- ments in applications such as Gigabit Ethernet, telecom- Mechanical Characteristics munication lines, and LVDS interfaces. u JEDEC SOT-23 5L package The RClamp3354S is constructed using Semtechs pro- u Pb-Free, Halogen Free, RoHS/WEEE Compliant prietary EPD process technology. The EPD process pro- u Molding compound ammability rating: UL 94V-0 vides low stand-off voltages with signi cant reductions in u Marking : Marking code + date code leakage current and capacitance over silicon-avalanche u Packaging : Tape and Reel diode processes. It features a low operating voltage of 3.3 volts for superior protection. Applications The RClamp3354S is in a 5-lead SOT-23 package. The u 10/100/1000 Ethernet leads are nished with lead-free matte tin. u Central Of ce Equipment u LVDS Interfaces u MagJacks / Integrated Magnetics u Notebooks / Desktops / Servers Circuit Diagram Pin Con guration * % ) * % ) / *%)2 2 / *%)2%2 www.semtech.com 1/24/2013 1RClamp3354S PROTECTION PRODUCTS Absolute Maximum Ratings Rating Symbol Value Units Peak Pulse Power (tp = 8/20s) P 400 W PK Peak Pulse Current (tp = 8/20s) I 25 A PP ESD per IEC 61000-4-2 (Air) 30 V kV ESD ESD per IEC 61000-4-2 (Contact) 30 O Operating Temperature T -55 to +85 C J O Storage Temperature T -55 to +150 C STG O Electrical Characteristics (T=25 C unless otherwise speci ed) Parameter Symbol Conditions Min. Typ. Max. Units Reverse Stand-Off Voltage V 3.3 V RWM Punch-Through Voltage V I = 2A 3.5 5.3 V PT PT Snap-Back Voltage V I = 50mA 2.8 V SB SB Reverse Leakage Current I V = 3.3V, T=25C 0.5 A R RWM I = 1A, tp = 8/20s PP 5.5 Any I/O to Ground I = 10A, tp = 8/20s PP Clamping Voltage V 10 V C Any I/O to Ground I = 25A, tp = 8/20s PP 16 Any I/O to Ground Between I/O pins and Ground 3.8 5 V = 0V, f = 1MHz R Junction Capacitance C pF J Between I/O pins 2.0 V = 0V, f = 1MHz R www.semtech.com 2013 Semtech Corporation. 2