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Manufacturer Part #


SM Series 12 V 400 W Asymmetrical TVS Diode for Extended Common-Mode - SOT-23

ECAD Model:
Mfr. Name: Semtech
Standard Pkg:
Date Code: 1949
Product Specification Section
Technical Attributes
Attributes Table
Breakdown Voltage-Min: 7.5V
Clamping Voltage-Max: 12V
Directional: Bi-Directional
Power Dissipation: 400W
Peak Output Current: 17A
Reverse Leakage Current: 1µA
Peak Power: 400W
Standoff Voltage: 12V
Operating Temp Range: -55°C to +125°C
Storage Temperature Range: -55°C to +150°C
Capacitance: 75pF
Package Style:  SOT-23 (SC-59,TO-236)
Mounting Method: Surface Mount
Features & Applications
The SM712.TCT is a transient voltage suppressor (TVS) diode which is designed for asymmetrical (12V to -7V ) protection in multi-point data transmission standard RS-485 applications. Available in a SOT-23 package.

The SOT23 package allows flexibility in the design of “crowded” 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 clamping voltage
  • Solid-state silicon avalanche technology


  • Protection of RS-485 transceivers with extended common-mode range
  • Security systems
  • Automatic Teller Machines
  • HFC systems
  • Networks
Pricing Section
Global Stock:
Cost Per Unit
Web Price:
$0.77 USD Each

$7.00 reeling fee is amortized over the number of components for each reel.
Mini-Reels are a custom product and are non-cancelable and non-returnable.