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TMOV20R300E
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TMOV20R300E Encyclopedia Entry

Product Overview

Category

The TMOV20R300E belongs to the category of varistors, which are electronic components used to protect circuits from overvoltage conditions.

Use

It is used to suppress transient voltage spikes and protect sensitive electronic equipment from damage.

Characteristics

  • Voltage Rating: 300V
  • Maximum Continuous Voltage: 175V
  • Peak Current Surge: 10kA
  • Operating Temperature Range: -40°C to +85°C

Package

The TMOV20R300E comes in a compact disc-shaped package with lead wires for easy integration into circuit designs.

Essence

The essence of the TMOV20R300E lies in its ability to rapidly absorb and dissipate high-energy transient surges, safeguarding connected devices.

Packaging/Quantity

Typically packaged in reels or trays, the TMOV20R300E is available in quantities suitable for both prototyping and production runs.

Specifications

  • Voltage Rating: 300V
  • Maximum Continuous Voltage: 175V
  • Peak Current Surge: 10kA
  • Response Time: <25ns
  • Leakage Current: <1µA
  • Capacitance: <1000pF

Detailed Pin Configuration

The TMOV20R300E features a standard two-pin configuration, with one pin for connection to the circuit's ground and the other for connection to the protected line.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltage spikes to safe levels.
  • Fast Response Time: Responds to voltage surges in nanoseconds, providing rapid protection.
  • Low Leakage Current: Ensures minimal power dissipation during normal operation.

Advantages and Disadvantages

Advantages

  • High surge current capability
  • Fast response time
  • Low leakage current
  • Wide operating temperature range

Disadvantages

  • Limited to specific voltage ratings
  • Requires periodic testing for continued reliability

Working Principles

The TMOV20R300E operates based on the principle of varistor action, where its resistance decreases as the voltage across it increases, effectively shunting excess energy away from the protected circuit.

Detailed Application Field Plans

The TMOV20R300E is commonly used in: - Power supply units - Telecommunication equipment - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • TMOV14R300E: Lower voltage rating variant suitable for more sensitive applications.
  • TMOV34R300E: Higher voltage rating variant for industrial and high-power applications.

In conclusion, the TMOV20R300E varistor offers reliable overvoltage protection for a wide range of electronic devices and systems, making it an essential component in modern circuit design.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av TMOV20R300E i tekniska lösningar

  1. What is the TMOV20R300E?

    • The TMOV20R300E is a type of varistor component that combines the functions of a metal oxide varistor (MOV) and a thermal fuse in a single package.

  2. What are the key features of TMOV20R300E?

    • The TMOV20R300E offers overvoltage protection, thermal protection, and fault indication in a compact and reliable design.

  3. How does TMOV20R300E provide overvoltage protection?

    • The TMOV20R300E responds to voltage surges by diverting excess current away from sensitive components, thereby protecting them from damage.

  4. What is the thermal protection function of TMOV20R300E?

    • The TMOV20R300E incorporates a built-in thermal fuse that disconnects the varistor element in case of overheating, preventing catastrophic failure.

  5. In what technical solutions can TMOV20R300E be used?

    • TMOV20R300E is commonly used in power supplies, industrial equipment, home appliances, and other electronic devices requiring robust overvoltage and thermal protection.

  6. What is the maximum operating voltage of TMOV20R300E?

    • The TMOV20R300E has a maximum operating voltage of 300V AC.

  7. How does TMOV20R300E indicate faults?

    • The TMOV20R300E features an integrated mechanical flag that pops up when the varistor has disconnected due to thermal overload, providing a visual indication of a fault condition.

  8. Is TMOV20R300E suitable for surge protection in outdoor applications?

    • Yes, TMOV20R300E is designed to withstand outdoor conditions and is suitable for surge protection in outdoor applications such as outdoor lighting systems and solar inverters.

  9. Can TMOV20R300E be used in conjunction with other protective devices?

    • Yes, TMOV20R300E can be used in combination with fuses, circuit breakers, and other protective devices to create a comprehensive protection scheme.

  10. What are the recommended storage and operating temperature ranges for TMOV20R300E?

    • The recommended storage temperature range for TMOV20R300E is -40°C to +85°C, and the recommended operating temperature range is -40°C to +85°C.