TMOV34S391MP Encyclopedia Entry

Product Overview

The TMOV34S391MP belongs to the category of metal oxide varistors (MOVs) and is commonly used for surge protection in electronic circuits. Its characteristics include high energy absorption capability, fast response time, and low leakage current. The package typically consists of a disc-shaped component with lead wires for connection. The essence of the TMOV34S391MP lies in its ability to protect sensitive electronic components from voltage surges. It is usually packaged in quantities suitable for industrial or commercial applications.

Specifications

• Maximum Allowable Voltage: 340V AC
• Varistor Voltage: 390V ±10%
• Peak Current (8/20μs): 6kA
• Energy (2ms): 60J
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TMOV34S391MP typically has two lead wires for connection. The pin configuration includes one input terminal and one output terminal, allowing for easy integration into circuit designs.

Functional Features

• Surge Protection: The TMOV34S391MP provides effective surge protection by clamping excessive voltage levels and diverting surge currents away from sensitive components.
• Fast Response Time: With its quick reaction to voltage spikes, this varistor helps prevent damage to connected equipment.
• Low Leakage Current: The varistor maintains low leakage current during normal operation, minimizing power consumption.

Advantages and Disadvantages

Advantages

• High Energy Absorption: Capable of handling high-energy surges, protecting downstream components.
• Compact Design: The small form factor allows for easy integration into various electronic devices.
• Wide Operating Temperature Range: Suitable for use in diverse environmental conditions.

Disadvantages

• Limited Lifespan: Over repeated surges, the varistor may degrade over time, necessitating replacement.
• Voltage Limitation: The maximum allowable voltage restricts its application in higher voltage environments.

Working Principles

The TMOV34S391MP operates based on the principle of nonlinear voltage-dependent resistance. When subjected to a surge, the varistor's resistance decreases, allowing it to absorb excess energy and limit the voltage across the protected circuit.

Detailed Application Field Plans

The TMOV34S391MP finds extensive application in various industries, including: - Industrial Automation: Protecting PLCs, motor drives, and control systems from voltage transients. - Telecommunications: Safeguarding communication equipment and network infrastructure from lightning-induced surges. - Consumer Electronics: Providing surge protection for home appliances and electronic gadgets.

Detailed and Complete Alternative Models

• TMOV20S431MP: A similar MOV with a lower varistor voltage but comparable surge protection capabilities.
• TMOV25S361MP: Offers a different balance of varistor voltage and peak current for specific application requirements.
• TMOV30S381MP: Suitable for applications requiring a slightly higher varistor voltage and energy absorption capacity.

In conclusion, the TMOV34S391MP serves as a reliable surge protection solution for a wide range of electronic applications, offering high energy absorption, fast response, and low leakage current. Its compact design and functional features make it a valuable component in safeguarding electronic circuits from damaging voltage surges.

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