SM712 LUGUANG | Alldatasheet
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Asymmetrical TVS Diode for Extended Common-Mode RS-485 DESCRIPTION FEAT URES The SM712 transient voltage suppressor (TVS) diode is designed for asymmetrical (12V to -7V) protection in multi-point data transmission standard RS-485 applications. The SM712 may be used to protect devices from transient voltages resulting from electrostatic discharge (ESD), electrical fast transients (EFT), and lightning. The SM712 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 SM712 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 (EFT) 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 Flammability Rating: UL 94V-0 Terminal: Matte tin plated. Packaging: Tape and Reel High temperature soldering guaranteed: 260℃/10s Reel size: 7 inch ORDERING INFORMATION APPL ICATIONS Device: SM712 Package: SOT-23 Marking: 712 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 http://www.lgesemi .com mail:lge@lgesemi.comRevision:20170701-P1
Asymmetrical TVS Diode for Extended Common-Mode RS-485 ABSOLUTE MAXIMUM RATING Symbol Parameter V alue 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=25C) Symbol Parameter Test Condition Pin 1 to 3 and Pin 2 to 3 (12V) TVS Pin 3 to 1 and Pin 3 to 2 (7V TVS) Units Min Typ Max Min Typ Max VRWM Reverse Working Voltage Pin 3 to 1 or Pin 2 to 1 12 7 V VBR Reverse Breakdown Voltage IT = 1mA 13.3 7.5 V IR Reverse Leakage Current VR = VRWM 1 20 μA VC1 Clamping Voltage 1 IPP = 5A, tp = 8/20μs 20 12 V VC2 Clamping Voltage 2 IPP = 17A, tp = 8/20μs 16 V CJ1 Junction Capacitance 1 VR = 0V, f = 1MHz 75 75 pF CJ2 Junction Capacitance 2 VR = VRWM, f = 1MHz 45 45 pF http://www.lgesemi .com mail:lge@lgesemi.comRevision:20170701-P2
Asymmetrical T VS Diode for Extended Common-Mode RS-485 ELECT RICAL CHARACTERISTICS CURVE http://www.lgesemi .com mail:lge@lgesemi.comRevision:20170701-P3
Asymmetrical TVS Diode for Extended Common-Mode RS-485 SOT-23 PACKAGE OUTLINE DIMENSIONS http://www.lgesemi .com mail:lge@lgesemi.comRevision:20170701-P4 Device Package Shipping SM712 SOT-23 3000/Tape&Reel