Littelfuse Inc.
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V420LC20APX2855

V420LC20APX2855 Product Overview

Introduction

The V420LC20APX2855 belongs to the category of transient voltage suppressor (TVS) diodes, which are used to protect sensitive electronic components from voltage spikes and transients. These diodes are characterized by their high surge capability and fast response time, making them essential for safeguarding electronic circuits from overvoltage events.

Basic Information Overview

  • Category: Transient Voltage Suppressor (TVS) Diode
  • Use: Protection against voltage spikes and transients
  • Characteristics: High surge capability, fast response time
  • Package: SMC (DO-214AB)
  • Essence: Safeguarding electronic circuits
  • Packaging/Quantity: Typically available in reels or tubes with varying quantities

Specifications

  • Part Number: V420LC20APX2855
  • Peak Pulse Power: 420W
  • Standoff Voltage: 20V
  • Breakdown Voltage: 22.2V
  • Clamping Voltage: 32.4V
  • Peak Pulse Current: 17A
  • Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The V420LC20APX2855 TVS diode typically features a standard SMC (DO-214AB) package with two pins for connection. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient overvoltages to protect downstream components.
  • Fast Response Time: Rapid reaction to voltage spikes ensures minimal impact on the protected circuitry.
  • High Surge Capability: Capable of handling large surge currents without degradation.

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time
  • High surge capability

Disadvantages

  • Limited to specific voltage ranges
  • May require additional circuitry for comprehensive protection

Working Principles

The V420LC20APX2855 operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds its breakdown voltage. This effectively diverts the transient energy away from the protected circuit, preventing damage.

Detailed Application Field Plans

The V420LC20APX2855 is commonly utilized in various applications, including: - Telecommunications: Protecting communication equipment from lightning-induced surges. - Automotive Electronics: Safeguarding vehicle electronics from voltage transients. - Industrial Control Systems: Ensuring the reliability of control circuitry in industrial environments.

Detailed and Complete Alternative Models

  • Alternative Model 1: V480LC20APX2855
  • Alternative Model 2: V430LC20APX2855
  • Alternative Model 3: V440LC20APX2855

In summary, the V420LC20APX2855 transient voltage suppressor diode offers robust protection against voltage spikes and transients, making it an essential component in various electronic systems.

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10 سوال و پاسخ رایج مربوط به کاربرد V420LC20APX2855 در راه حل های فنی را فهرست کنید

  1. What is V420LC20APX2855?

    • V420LC20APX2855 is a type of varistor, also known as a voltage-dependent resistor, that is commonly used for surge protection in electronic circuits.

  2. What are the key specifications of V420LC20APX2855?

    • V420LC20APX2855 has a maximum AC voltage of 340V, a maximum DC voltage of 430V, and a peak current of 10kA.

  3. How does V420LC20APX2855 provide surge protection?

    • V420LC20APX2855 operates by rapidly changing its resistance in response to changes in voltage, effectively diverting excess current away from sensitive components during a surge event.

  4. In what applications is V420LC20APX2855 commonly used?

    • V420LC20APX2855 is often employed in power supplies, telecommunications equipment, industrial controls, and consumer electronics to safeguard against transient voltage spikes.

  5. What is the operating temperature range of V420LC20APX2855?

    • V420LC20APX2855 typically operates within a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.

  6. How should V420LC20APX2855 be mounted in a circuit?

    • V420LC20APX2855 can be surface-mounted or through-hole mounted on a printed circuit board, following the manufacturer's recommended layout and soldering guidelines.

  7. What is the expected lifespan of V420LC20APX2855 in typical usage scenarios?

    • V420LC20APX2855 has a long operational life expectancy when used within its specified parameters, providing reliable surge protection over an extended period.

  8. Does V420LC20APX2855 require any additional protective measures in a circuit?

    • It is advisable to incorporate proper grounding and shielding techniques along with V420LC20APX2855 to enhance overall surge protection effectiveness in complex systems.

  9. Are there any potential drawbacks or limitations of using V420LC20APX2855?

    • While highly effective at mitigating transient voltage events, V420LC20APX2855 may exhibit some leakage current and could experience degradation over time if subjected to repeated surges beyond its ratings.

  10. Where can I find detailed technical documentation and application notes for V420LC20APX2855?

    • Comprehensive technical datasheets, application guides, and reference designs for V420LC20APX2855 can be obtained from the manufacturer's website or authorized distributors.