Littelfuse Inc.
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
TMOV34S421EP
詳細を表示 DataSheets

TMOV34S421EP Encyclopedia Entry

Product Overview

The TMOV34S421EP belongs to the category of surge protective devices and is designed for use in electrical systems to protect against transient voltage surges. This device is characterized by its high energy handling capability, compact package, and reliable performance. It is typically packaged individually and is essential for safeguarding sensitive electronic equipment from voltage spikes.

Specifications

  • Maximum Continuous Operating Voltage: 130VAC
  • Nominal Discharge Current (8/20μs): 10kA
  • Maximum Surge Current (8/20μs): 50kA
  • Response Time: <25ns
  • Operating Temperature Range: -40°C to +85°C
  • Packaging: Individual packaging

Detailed Pin Configuration

The TMOV34S421EP features a standard 2-pin configuration with clearly labeled input and output terminals. The pinout is designed for easy integration into various electrical systems, ensuring straightforward installation and connection.

Functional Features

  • High Energy Handling Capability: The TMOV34S421EP can effectively absorb and dissipate high-energy transient surges, providing robust protection for connected equipment.
  • Fast Response Time: With a response time of less than 25ns, this device rapidly clamps transient voltages, minimizing the risk of damage to downstream components.
  • Compact Design: The compact package of the TMOV34S421EP allows for convenient integration into space-constrained applications without sacrificing performance.

Advantages and Disadvantages

Advantages

  • Reliable Surge Protection: Offers dependable protection against transient voltage surges, enhancing the longevity of connected equipment.
  • Fast Response: Rapidly responds to voltage transients, reducing the likelihood of damage to sensitive electronics.

Disadvantages

  • Limited Voltage Range: The TMOV34S421EP is optimized for use within a specific voltage range, limiting its applicability in certain scenarios.
  • Single-Use Device: Once the TMOV34S421EP has absorbed a surge, it may need replacement, depending on the severity of the event.

Working Principles

The TMOV34S421EP operates based on metal oxide varistor (MOV) technology, which utilizes a non-linear voltage-dependent resistor to divert excess voltage away from sensitive equipment. When a surge occurs, the MOV component rapidly conducts, shunting the excess energy to ground and protecting downstream devices.

Detailed Application Field Plans

The TMOV34S421EP is well-suited for a wide range of applications, including: - Industrial Control Systems - Telecommunications Equipment - Power Distribution Units - Renewable Energy Systems - Consumer Electronics

Detailed and Complete Alternative Models

For users seeking alternative surge protective devices, the following models offer comparable performance and features: 1. TMOV20RP320E 2. TMOV25S431EP 3. TMOV30S441EP 4. TMOV40S461EP

In summary, the TMOV34S421EP is a reliable surge protective device with high energy handling capability, fast response time, and a compact design. While it has limitations in terms of voltage range and single-use nature, its effectiveness in protecting sensitive equipment makes it a valuable component in various electrical systems.

Word Count: 411

技術ソリューションにおける TMOV34S421EP の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the TMOV34S421EP?

    • The TMOV34S421EP is a type of metal oxide varistor (MOV) with integrated thermal protection, designed to protect sensitive electronic equipment from voltage surges and transients.

  2. What are the key features of the TMOV34S421EP?

    • The TMOV34S421EP features a high surge current capability, low leakage current, and an integrated thermal disconnect function for added safety.

  3. How does the TMOV34S421EP provide overvoltage protection?

    • The TMOV34S421EP clamps excessive voltage levels by diverting surge currents away from sensitive components, thereby safeguarding them from damage.

  4. In what applications can the TMOV34S421EP be used?

    • The TMOV34S421EP is commonly employed in power supplies, industrial equipment, telecommunications systems, and other electronic devices requiring robust overvoltage protection.

  5. What is the maximum energy absorption capability of the TMOV34S421EP?

    • The TMOV34S421EP has a high energy absorption rating, making it suitable for handling large transient energy events.

  6. How does the integrated thermal protection function work in the TMOV34S421EP?

    • The integrated thermal protection in the TMOV34S421EP disconnects the MOV element from the circuit in the event of overheating, preventing potential fire hazards.

  7. What are the typical failure modes of the TMOV34S421EP?

    • The TMOV34S421EP may fail due to prolonged exposure to overvoltage conditions or excessive current, necessitating replacement to maintain effective protection.

  8. Can the TMOV34S421EP be used in outdoor applications?

    • Yes, the TMOV34S421EP is suitable for outdoor use and is designed to withstand harsh environmental conditions.

  9. Does the TMOV34S421EP require any additional protective circuitry?

    • The TMOV34S421EP is self-protected and does not require additional circuitry for normal operation.

  10. What are the recommended installation practices for the TMOV34S421EP?

    • Proper grounding, secure mounting, and adherence to manufacturer guidelines for installation and maintenance are crucial for optimal performance of the TMOV34S421EP.