Bourns Inc.
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MF-R055/90U-0
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MF-R055/90U-0

Product Overview

Category

The MF-R055/90U-0 belongs to the category of resettable fuses, commonly known as PTC (positive temperature coefficient) thermistors.

Use

It is used to protect electronic circuits from overcurrent and short-circuit conditions by limiting the flow of current in the event of a fault.

Characteristics

  • Resettable fuse
  • Polymer-based PTC thermistor
  • Low resistance in normal operating conditions
  • High resistance when exposed to overcurrent or short-circuit conditions

Package

The MF-R055/90U-0 is typically available in surface mount packages.

Essence

The essence of the MF-R055/90U-0 lies in its ability to provide overcurrent protection while being resettable, unlike traditional fuses.

Packaging/Quantity

The product is usually packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

  • Hold Current: 0.55A
  • Trip Current: 1.1A
  • Maximum Voltage: 90V
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The MF-R055/90U-0 typically has two pins for surface mount installation. The pinout configuration may vary based on the manufacturer's specifications.

Functional Features

  • Overcurrent protection
  • Self-resetting capability
  • Fast response time
  • Compact design

Advantages

  • Eliminates the need for replacement fuses
  • Provides reliable overcurrent protection
  • Suitable for automated assembly processes
  • Long operational life

Disadvantages

  • Limited voltage and current ratings compared to traditional fuses
  • Sensitive to ambient temperature variations

Working Principles

When the current flowing through the MF-R055/90U-0 exceeds the hold current, the device heats up and undergoes a transition from a low-resistance state to a high-resistance state, limiting the current flow. Once the fault condition is removed, the device cools down and returns to its low-resistance state, effectively resetting itself.

Detailed Application Field Plans

The MF-R055/90U-0 is commonly used in various electronic devices and systems, including: - Power supplies - Battery packs - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • MF-R020/240U-2
  • MF-R110/72U-0
  • MF-R500/48U-0
  • MF-R900/24U-0

In conclusion, the MF-R055/90U-0 is a resettable fuse with specific hold and trip currents, designed to provide overcurrent protection in a wide range of electronic applications. Its self-resetting capability and compact design make it a preferred choice for modern electronic circuit protection needs.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MF-R055/90U-0 en soluciones técnicas

  1. What is the MF-R055/90U-0 used for in technical solutions?

    • The MF-R055/90U-0 is a resettable fuse designed to protect electronic circuits from overcurrent and short circuit conditions.

  2. What is the maximum voltage and current rating of the MF-R055/90U-0?

    • The MF-R055/90U-0 has a maximum voltage rating of 60V and a maximum current rating of 40A.

  3. How does the MF-R055/90U-0 compare to traditional fuses?

    • Unlike traditional fuses, the MF-R055/90U-0 is resettable, which means it can be reused after tripping once the fault condition is removed.

  4. Can the MF-R055/90U-0 be used in automotive applications?

    • Yes, the MF-R055/90U-0 is suitable for use in automotive electronics to protect against overcurrent events.

  5. What is the typical response time of the MF-R055/90U-0?

    • The MF-R055/90U-0 has a fast response time, typically tripping within milliseconds of detecting an overcurrent or short circuit.

  6. Is the MF-R055/90U-0 suitable for use in high-temperature environments?

    • Yes, the MF-R055/90U-0 is designed to operate reliably in high-temperature environments, making it suitable for various technical solutions.

  7. Can the MF-R055/90U-0 be used in conjunction with other protective devices?

    • Yes, the MF-R055/90U-0 can be used in combination with other protective devices such as circuit breakers and surge protectors for comprehensive protection.

  8. What are the typical applications of the MF-R055/90U-0 in technical solutions?

    • The MF-R055/90U-0 is commonly used in power supplies, battery packs, motor drives, and other electronic systems requiring overcurrent protection.

  9. Does the MF-R055/90U-0 require any special maintenance?

    • No, the MF-R055/90U-0 is maintenance-free and does not require periodic replacement like traditional fuses.

  10. Where can I find detailed specifications and application guidelines for the MF-R055/90U-0?

    • Detailed specifications and application guidelines for the MF-R055/90U-0 can be found in the product datasheet provided by the manufacturer.