SM712.TCT

SM712.TCT Asymmetrical TVS Diode for Extended Common-Mode RS-485 DESCRIPTION FEATURES The transient voltage suppressor (TVS) diode is designed for asymmetrical (12V to -7V) protection in multi-point data transmission standard RS-485 applications. be used to protect devices from transient voltages resulting from electrostatic discharge (ESD), electrical fast transients (FET), and lightning. The features 400 Watts (tp=8/20μs) of power handling capability to accommodate the higher transient voltage levels which may be expected in extended common mode applications. This provides higher equipment reliability and eliminates the “ guess work” required when using zener diodes that are not rated to handle such transient conditions. The integrated design aids in reducing voltage over-shoot associated with trace inductance. The low clamping voltage of the minimizes the stress on the protected transceiver. The SOT-23 package allows flexibility in the design of “crowed” circuit boards. — 400 watts peak pulse power (tp=8/20μs) — Transient protection for asymmetrical data lines to IEC 61000-4-2 (ESD) ±15kV(air), ±8kV(contact) IEC 61000-4-4 (FET) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20μs) — Protects two +12V to -7V lines — Low capacitance — Low leakage current — Low clamping voltage — Solid-state silicon avalanche technology — RoHS compliant MACHANICAL DATA — SOT-23 package — Terminal: Matte tin plated. — Packaging: Tape and Reel — High temperature soldering guaranted:260℃/10s — Reel size: 7 inch ORDERING INFORMATION APPLICATIONS — Package: SOT-23 — Marking: 712 or C72 — Material: Halogen free — Packing: Tape & Reel Quantity per reel: 3,000pcs — Protection of RS-485 transceivers with extended common-mode range — Security systems — Automatic Teller Machines — HFC systems — Networks PIN CONFIGURATION & SCHEMATIC CIRCUIT DIAGRAM 1/4 SM712.TCT Asymmetrical TVS Diode for Extended Common-Mode RS-485 ABSOLUTE MAXIMUM RATING Symbol Parameter Value Units PPP Peak Pulse Power (8/20μs) 400 W IPP Peak Pulse Current (8/20μs) 17 A VESD ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) ±15 ±8 kV TOPT Operating Temperature -55/+150 °C TSTG Storage Temperature -55/+150 °C ELECTRICAL CHARACTERISTICS (Tamb=25°C) Symbol Parameter Pin 1 to 3 and Pin 2 to 3 Test Condition Min VRWM VBR IR Reverse Working Voltage Reverse Breakdown Voltage Reverse Leakage Current Typ Pin 3 to 1 or Pin 2 to 1 IT = 1mA Max Pin 3 to 1 and Pin 3 to 2 Min Typ 12 13.3 Units Max 7 7.5 V V VR = VRWM 1 20 μA VC1 Clamping Voltage 1 IPP = 5A, tp = 8/20μs 20 10 V VC2 Clamping Voltage 2 IPP = 17A, tp = 8/20μs 26 12 V Junction Capacitance 1 Junction Capacitance 2 VR = 0V, f = 1MHz VR = VRWM, f = 1MHz 75 75 pF CJ1 CJ2 45 2/4 45 pF SM712.TCT Asymmetrical TVS Diode for Extended Common-Mode RS-485 ELECTRICAL CHARACTERISTICS CURVE 3/4 SM712.TCT Asymmetrical TVS Diode for Extended Common-Mode RS-485 SOT-23 PACKAGE OUTLINE DIMENSIONS 4/4