SM712-02HTG Asymmetrical TVS Diode: System, Pinout, and Datasheet
ESD Suppressor TVS 12V Automotive 3-Pin SOT-23 T/R
The SM712-02HTG TVS Diode Array is designed to safeguard RS-485 applications with asymmetrical working voltages. This article mainly introduces system, pinout, datasheet and other detailed information about Littelfuse Inc. SM712-02HTG.

{486} TVS Diode Test, What is, & How To Test TVS Transient Voltage Suppressor, Transil or Thyrector
- SM712-02HTG Description
- SM712-02HTG Pinout
- SM712-02HTG CAD Model
- SM712-02HTG Features
- Specifications
- Parts with Similar Specs
- SM712-02HTG Functional Block Diagram
- SM712-02HTG Part Marking System
- SM712-02HTG Part Numbering System
- SM712-02HTG Application Circuit
- SM712-02HTG Applications
- SM712-02HTG Package
- SM712-02HTG Manufacturer
- Trend Analysis
- Datasheet PDF
SM712-02HTG Description
The SM712-02HTG TVS Diode Array is designed to safeguard RS-485 applications with asymmetrical working voltages (-7V to 12V) from electrostatic discharge (ESD), electrical fast transients (EFT), and surges caused by lightning.
The SM712 can safely dissipate up to 19A of 8/20us induced surge current ( IEC- 61000-4-5 2nd edition) with very low clamping voltages and can absorb repetitive ESD strikes over the maximum level stipulated in the IEC 61000-4-2 international standard without performance deterioration.
SM712-02HTG Pinout
SM712-02HTG CAD Model
SM712-02HTG Features
Specifications
- TypeParameter
- Factory Lead Time13 Weeks
- Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
TO-236-3, SC-59, SOT-23-3 - Number of Pins3
- Diode Element Material
The parameter "Diode Element Material" refers to the specific semiconductor material used in the construction of a diode. This material determines the electrical characteristics and performance of the diode, including its forward voltage drop, reverse breakdown voltage, and switching speed. Common diode element materials include silicon, germanium, and gallium arsenide, each offering different advantages for various applications. The choice of material impacts the diode's efficiency, thermal stability, and overall suitability for specific electronic circuits.
SILICON - Breakdown Voltage / V13.3V
- Number of Elements2
- Reverse Stand-off Voltage12V
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~125°C TJ - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Cut Tape (CT) - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
Automotive, AEC-Q101, SM712, SPA® - Published2014
- JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e4 - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations3
- Termination
Termination in electronic components refers to the practice of matching the impedance of a circuit to prevent signal reflections and ensure maximum power transfer. It involves the use of resistors or other components at the end of transmission lines or connections. Proper termination is crucial in high-frequency applications to maintain signal integrity and reduce noise.
SMD/SMT - ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - TypeZener
- Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
Nickel/Palladium/Gold (Ni/Pd/Au) - Applications
The parameter "Applications" in electronic components refers to the specific uses or functions for which a component is designed. It encompasses various fields such as consumer electronics, industrial automation, telecommunications, automotive, and medical devices. Understanding the applications helps in selecting the right components for a particular design based on performance, reliability, and compatibility requirements. This parameter also guides manufacturers in targeting their products to relevant markets and customer needs.
Automotive - Additional Feature
Any Feature, including a modified Existing Feature, that is not an Existing Feature.
LOW LEAKAGE CURRENT - HTS Code
HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.
8541.10.00.50 - Capacitance
Capacitance is a fundamental electrical property of electronic components that describes their ability to store electrical energy in the form of an electric field. It is measured in farads (F) and represents the ratio of the amount of electric charge stored on a component to the voltage across it. Capacitors are passive components that exhibit capacitance and are commonly used in electronic circuits for various purposes such as filtering, energy storage, timing, and coupling. Capacitance plays a crucial role in determining the behavior and performance of electronic systems by influencing factors like signal propagation, frequency response, and power consumption.
75pF - Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
600W - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Depth
In electronic components, "Depth" typically refers to the measurement of the distance from the front to the back of the component. It is an important parameter to consider when designing or selecting components for a project, as it determines how much space the component will occupy within a circuit or device. The depth of a component can impact the overall size and layout of the circuit board or enclosure in which it will be installed. It is usually specified in millimeters or inches and is crucial for ensuring proper fit and functionality within the intended application.
1.4mm - Operating Supply Voltage
The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.
12V - Working Voltage
The "Working Voltage" parameter in electronic components refers to the maximum voltage that the component can safely handle while operating within its specified parameters. It is a crucial specification to consider when designing or selecting components for a circuit to prevent damage or failure. Exceeding the working voltage can lead to breakdown or insulation failure, potentially causing the component to malfunction or even become permanently damaged. It is important to always operate electronic components within their specified working voltage range to ensure reliable and safe operation of the circuit.
12V - Polarity
In electronic components, polarity refers to the orientation or direction in which the component must be connected in a circuit to function properly. Components such as diodes, capacitors, and LEDs have polarity markings to indicate which terminal should be connected to the positive or negative side of the circuit. Connecting a component with incorrect polarity can lead to malfunction or damage. It is important to pay attention to polarity markings and follow the manufacturer's instructions to ensure proper operation of electronic components.
UNIDIRECTIONAL - Number of Channels2
- Leakage Current
Leakage current is a term used in electronics to describe the small amount of current that flows through a component when it is supposed to be in a non-conductive state. This current can occur due to imperfections in the materials used to manufacture the component, as well as other factors such as temperature and voltage. Leakage current can lead to power loss, reduced efficiency, and potential reliability issues in electronic devices. It is important to consider and minimize leakage current in electronic components to ensure proper functionality and performance.
20μA - Element Configuration
The distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.
Dual - Power Line Protection
During fault, the only circuit breaker closest to the fault point should be tripped. The operating time of relay associated with protection of line should be as minimum as possible in order to prevent unnecessary tripping of circuit breakers associated with other healthy parts of power system.
No - Voltage - Breakdown (Min)
Voltage - Breakdown (Min) is a parameter used to specify the minimum voltage level at which an electronic component, such as a diode or capacitor, will break down and allow current to flow through it uncontrollably. This breakdown voltage is a critical characteristic that determines the maximum voltage the component can withstand before failing. It is important to ensure that the applied voltage does not exceed this minimum breakdown voltage to prevent damage to the component and maintain proper functionality. Manufacturers provide this specification to help engineers and designers select components that are suitable for their intended applications and operating conditions.
13.3V 7.5V - Current - Peak Pulse (10/1000μs)
The parameter "Current - Peak Pulse (10/1000μs)" in electronic components refers to the maximum current that a device can handle during a transient overvoltage event with a specific waveform, typically a 10/1000μs pulse. This parameter is important for surge protection devices such as transient voltage suppressors (TVS) and varistors, as it indicates the device's ability to divert excess current away from sensitive components and protect them from damage. A higher peak pulse current rating signifies better surge protection capability, making the component more suitable for applications exposed to high-voltage transients or lightning strikes. Designers should carefully consider this parameter when selecting surge protection components to ensure reliable operation and protection of their electronic circuits.
19A 8/20μs - Voltage - Clamping (Max) @ Ipp
Voltage - Clamping (Max) @ Ipp refers to the maximum voltage that a component, such as a transient voltage suppressor or diode, can clamp when subjected to a specific peak current (Ipp). It indicates the upper limit of voltage that the component will allow to pass through, effectively protecting sensitive circuits from overvoltage conditions. This parameter is crucial for ensuring that devices are safeguarded against voltage spikes without being damaged. Designers use this specification to select appropriate components for overvoltage protection in their applications.
31V 19V - Clamping Voltage
Clamping voltage is a term used in electronic components, particularly in devices like diodes and transient voltage suppressors. It refers to the maximum voltage level at which the component can effectively limit or clamp the voltage across its terminals. When the voltage across the component exceeds the clamping voltage, the component conducts and effectively limits the voltage to that level, protecting the circuit from overvoltage conditions. Clamping voltage is an important parameter to consider when selecting components for applications where voltage spikes or surges may occur, as it determines the level at which the component will start to protect the circuit.
31V - Voltage - Reverse Standoff (Typ)
Voltage - Reverse Standoff (Typ) refers to the maximum reverse voltage that a semiconductor device, such as a diode or a transient voltage suppressor, can withstand without entering into breakdown. It is typically specified as a nominal value and indicates the voltage level at which the device transitions from its non-conducting state to a conducting state when reverse-biased. Exceeding this voltage can lead to permanent damage or failure of the component. This parameter is crucial for ensuring the safe operating limits of electronic circuits, particularly in protecting sensitive components from voltage spikes.
12V Max 7V Max - Peak Pulse Current
The peak pulse power rating of a TVS diode is defined as the instantaneous power dissipated by a device for a given pulse condition, and is a measure of the power that is dissipated in the TVS junction during a given transient event.
19A - Max Surge Current
Surge current is a peak non repetitive current. Maximum (peak or surge) forward current = IFSM or if(surge), the maximum peak amount of current the diode is able to conduct in forward bias mode.
19A - Peak Pulse Power
Peak Pulse Power is a parameter used to specify the maximum amount of power that an electronic component can handle during a transient event, such as a surge or spike in voltage or current. It indicates the maximum power dissipation capability of the component for a short duration. This parameter is important for protecting electronic circuits from damage caused by sudden high-energy events. Peak Pulse Power is typically expressed in watts and is crucial for selecting components that can withstand transient overloads without failing. It helps ensure the reliability and longevity of electronic systems in various applications.
600W - Direction
In electronic components, the parameter "Direction" refers to the orientation or alignment in which the component is designed to operate effectively. This parameter is particularly important for components such as diodes, transistors, and capacitors, which have specific polarity or orientation requirements for proper functionality. For example, diodes allow current flow in one direction only, so their direction parameter indicates the correct orientation for current flow. Similarly, polarized capacitors have a positive and negative terminal, requiring proper alignment for correct operation. Understanding and adhering to the direction parameter is crucial for ensuring the reliable and efficient performance of electronic components in a circuit.
Bidirectional - Capacitance @ Frequency
Capacitance @ Frequency refers to the value of capacitance that a capacitor exhibits when subjected to an alternating current (AC) signal at a specific frequency. This parameter highlights how the capacitor's behavior changes with frequency, as capacitance can vary due to effects like equivalent series resistance (ESR) and loss factors. Typically measured in microfarads (µF) or picofarads (pF), this value is crucial for applications involving signal coupling, filtering, and timing where AC signals are prevalent. Understanding capacitance at different frequencies helps in selecting the right capacitor for specific circuit functions.
75pF @ 1MHz - Height1.12mm
- Length3.04mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
Parts with Similar Specs
- ImagePart NumberManufacturerPolarityBreakdown VoltageClamping VoltagePeak Pulse PowerPeak Pulse CurrentRoHS StatusNumber of ChannelsHTS CodeView Compare
SM712-02HTG
UNIDIRECTIONAL
13.3 V
31 V
600 W
19 A
ROHS3 Compliant
2
8541.10.00.50
Bidirectional
26.7 V
50 V
500 W
10 A
ROHS3 Compliant
2
8541.10.00.50
Bidirectional
26.2 V
40 V
-
6 A
ROHS3 Compliant
2
8541.10.00.50
Bidirectional
14 V
20 V
500 W
35 A
ROHS3 Compliant
2
8541.10.00.50
Bidirectional
26 V
40 V
500 W
15 A
ROHS3 Compliant
2
8541.10.00.50
SM712-02HTG Functional Block Diagram
SM712-02HTG Part Marking System
SM712-02HTG Part Numbering System
SM712-02HTG Application Circuit
SM712-02HTG Applications
• RS-485
• Fieldbus
• Modbus
• Profibus
• DMX512
• Security Systems
• AutomatedT eller Machines (ATMs)
• Lighting Control - DALI
• Communication Equipments
SM712-02HTG Package
SM712-02HTG Manufacturer
Littelfuse products are used in a wide range of electrical energy-related applications, from consumer gadgets to cars and industrial buildings. With rising platforms in power regulation and sense, they have the industry's broadest and deepest array of circuit protection devices. As part of their corporate strategy of accelerated organic expansion and strategic acquisitions, they are growing into complimentary markets. Power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors, as well as equipment for the safe regulation and distribution of electrical power, are among these markets.
Trend Analysis
Datasheet PDF
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