Part Number: SM712.TCT

Manufacturer: Semtech Corporation

Description: TVS DIODE 12V/7V 26V/12V SOT23-3

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

Technical Specifications of SM712.TCT

Datasheet  SM712.TCT datasheet
Product Photos SOT-23-3
Standard Package 3,000
Category Circuit Protection
Family TVS – Diodes
Packaging Tape & Reel (TR)
Type Zener
Unidirectional Channels
Bidirectional Channels 2
Voltage – Reverse Standoff (Typ) 12V (Max), 7V (Max)
Voltage – Breakdown (Min) 13.3V, 7.5V
Voltage – Clamping (Max) @ Ipp 26V, 12V
Current – Peak Pulse (10/1000μs) 17A (8/20μs)
Power – Peak Pulse 400W
Power Line Protection No
Applications General Purpose
Capacitance @ Frequency 75pF @ 1MHz
Operating Temperature -55°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Supplier Device Package SOT-23-3
Online Catalog SM712 Series
Other Names SM712TCT SM712TR


It is critical in the realm of electronics and data transfer to safeguard sensitive components and devices against transient voltages. The SM712 Transient Voltage Suppressor (TVS) diode is an important component in this regard. In this comprehensive study, we will look at the SM712 TVS diode, its features, applications, and how it may effectively protect your electrical equipment.

Understanding the SM712 TVS Diode

The SM712 TVS diode is intended for asymmetrical protection in RS-485 multi-point data transmission applications. It is designed to shield devices against transient voltages caused by a variety of causes such as electrostatic discharge (ESD), electrical fast transients (EFT), and even lightning strikes.

Key Features of the SM712 TVS diode

  • High Power Handling: The SM712 is capable of handling more than 500 Watts of power (tp = 8/20 s), making it suited for applications requiring greater transient voltage levels. This large power capacity increases equipment reliability and removes the requirement for unsuitable Zener diodes.
  • Integrated Design: By combining two 12V and two 7V TVS diodes into a single package, four separate components are replaced. This integration lowers voltage overshoot caused by trace inductance, hence increasing overall protection efficiency.
  • Low Clamping Voltage: The low clamping voltage of the diode reduces stress on the shielded transceiver, ensuring the safety of sensitive electronic equipment.
  • Compliance with IEC Standards: The SM712 meets worldwide transient protection standards such as IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Lightning). It can withstand ESD at 30kV (Air) and 30kV (Contact), EFT at 40A (5/50ns), and lightning at 21A (tp = 8/20s).
  • Low Capacitance: Because the diode has a low capacitance, it is more effective at suppressing transient voltage occurrences.
  • Solid-State Silicon-Avalanche Technology: The use of solid-state silicon-avalanche technology assures that the diode is reliable and durable, even in adverse environmental circumstances.

These characteristics combine to make the SM712 TVS diode a strong and dependable choice for protecting electronic equipment from transient voltage spikes and surges.

Mechanical Characteristics of the SM712 TVS diode

  • Package: The JEDEC SOT23 package houses the SM712 TVS diode, which is a standardized surface-mount package commonly used in electrical components.
  • Flammability Rating: It has a UL 94V-0 molding compound flammability rating. This rating indicates that the diode’s housing material is highly resistant to combustion, assuring fire safety in electronic applications.
  • Environmental Compliance: The SM712 TVS diode is safe for the environment. It is Pb-Free (lead-free), Halogen-Free (no halogenated materials), and RoHS (Restriction of Hazardous Substances) and WEEE (Waste Electrical and Electronic Equipment) compliant. This implies it passes stringent standards for eliminating hazardous chemicals and supporting responsible electronic component disposal and recycling.
  • Marking: Look for the “712” label to quickly identify the SM712 TVS diode. This label allows consumers and manufacturers to immediately identify this particular diode in their electrical assemblies.
  • Packaging: The SM712 TVS diode is offered in tape and reel packaging for your convenience. This packing type is often utilized in high-volume manufacturing operations, making automated assembly machines more efficient at handling diodes.

These mechanical qualities increase the SM712 TVS diode’s practicality and convenience of use in a variety of electronic applications, while also displaying its dedication to safety and environmental responsibility.

Applications of SM712 TVS Diode

The SM712 TVS diode provides versatile transient voltage protection, making it suited for a wide range of applications in diverse sectors. Here are some of the most typical applications for the SM712 TVS diode:

● Transceivers for RS-485 communication

RS-485 communication is widely used in industrial and automation applications. The SM712 TVS diode is a great choice for protecting RS-485 transceivers, particularly in situations requiring a wide common mode range. It contributes to the protection of these key components against transient voltage occurrences, ensuring reliable data transfer.

Security systems rely on sensitive electronics, such as surveillance cameras, access control panels, and alarm systems. The SM712 TVS diode provides reliable protection against transient voltages, allowing these systems to operate continuously. It ensures that security gadgets continue to function even when there are electrical interruptions.

● ATMs (Automated Teller Machines)

ATMs are essential components of our banking infrastructure. It is critical to ensure that ATMs operate continuously in order to provide access to financial services. The SM712 TVS diode is critical in protecting ATMs from transient voltage occurrences, reducing the risk of downtime and possibly machine damage.

● Hybrid Fiber-Coaxial (HFC) Systems

HFC systems are used to connect homes and businesses to cable television and high-speed internet. For signal transmission, these systems rely on sensitive electronic equipment. By protecting against transient voltage occurrences, the SM712 TVS diode protects network infrastructure, guaranteeing that users enjoy uninterrupted and high-quality services.

● Networks

Whether in data centers or telecommunications networks, the SM712 TVS diode is a critical component for maintaining data transmission equipment integrity. Reliable network infrastructure is crucial for communication, data transport, and internet access in today’s interconnected world. The SM712 aids in the prevention of network device damage, lowering the danger of network disruptions and data loss.

The SM712 TVS diode is critical in all of these applications for safeguarding electronic equipment from transient voltage spikes generated by phenomena such as lightning strikes, electrostatic discharge, and electrical rapid transients. Because of its excellent power handling, low clamping voltage, and conformity with international standards, it is a reliable solution for maintaining the lifetime and reliability of sensitive electronic equipment.


In conclusion, the SM712 Transient Voltage Suppressor (TVS) diode stands as a formidable and dependable solution for safeguarding your electronic equipment against transient voltage events. Its exceptional attributes, including high power handling, low clamping voltage, and strict adherence to international standards, make it an essential component in contemporary electronics.

For access to the benefits of the SM712.TCT TVS diode, we encourage you to get in touch with ICRFQ, China’s leading electronic component wholesaler. Make the smart choice for your electronics by investing in the SM712 TVS diode and fortify your equipment against the unpredictable nature of transient voltage events.

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