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SM712

Semtech
Part Number SM712
Manufacturer Semtech
Description Asymmerical TVS Diode
Published Mar 8, 2021
Detailed Description SM712 Asymmerical TVS Diode for Extended Common-Mode RS-485 PROTECTION PRODUCTS Description The SM712 transient voltage...
Datasheet PDF File SM712 PDF File

SM712
SM712

Overview
SM712 Asymmerical TVS Diode for Extended Common-Mode RS-485 PROTECTION PRODUCTS Description 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), eletrical fast transients (EFT), and lightning.
The SM712 features more than 500 Watts (tp = 8/20 μs) of power handling capability to accommodate the higher transient voltage levels which may be expected in extended commom 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 SM712 replaces four discrete components by integrating two 12V and two 7V TVS diodes in a single package.
The integrated design aids in reducing voltage over-shoot associated with trace inductance.
The low clamping voltage of SM712 minimizes the stress on the protected transceiver.
Features • Transient Protection to s IEC 61000-4-2 (ESD): ±30kV (Air), ±30kV (Contact) s IEC 61000-4-4 (EFT): 40A (5/50ns) s IEC 61000-4-5 (Lightning): 21A for 12V TVS & 38A for 7V TVS (tp = 8/20µs) • Protects two +12V to -7V lines • Peak pulse power (tp = 8/20μs): 500-700W • Low capacitance • Low clamping voltage • Solid-State Silicon-Avalanche Technology Mechanical Characteristics • JEDEC SOT23 Package • Molding Compound Flammability Rating: UL 94V-0 • Pb-Free, Halogen Free, RoHS/WEEE compliant • Marking: 712 • Packaging: Tape and Reel Applications • RS-485 tranceivers with extended common mode range • Security systems • Automatic Teller Machines • HFC systems • Networks Circuit Diagram I/O 1 1 12V I/O 2 2 12V 7V 7V SM712 GND 3 SM712 Final Datasheet 10/17/2017 Rev 6.
0 Schematic and Pin Con guration 3 www.
semtech.
com 1 2 SOT23 (Top View) Page 1 Semtech Absolute Maximum Ratings Rating Peak Pulse Power (tp...


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