Bourns Inc.
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MF-R090-2-99
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MF-R090-2-99

Product Overview

Category

The MF-R090-2-99 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Use

It is primarily used for overcurrent protection in electronic circuits and devices.

Characteristics

  • Resettable: The fuse resets itself after the fault condition is removed.
  • Fast-acting: Provides quick protection against overcurrent conditions.
  • Compact: Small form factor suitable for various electronic applications.

Package

The MF-R090-2-99 is typically packaged in tape and reel for automated assembly processes.

Essence

The essence of the MF-R090-2-99 lies in its ability to protect electronic circuits from overcurrent events without requiring replacement after each fault occurrence.

Packaging/Quantity

It is commonly available in reels containing a specific quantity based on the manufacturer's specifications.

Specifications

  • Hold Current: 0.9A
  • Trip Current: 1.8A
  • Maximum Voltage: 30V
  • Operating Temperature Range: -40°C to 85°C
  • Resistance: <0.3Ω

Detailed Pin Configuration

The MF-R090-2-99 features two terminals for connection within the circuit. The pin configuration is as follows: - Pin 1: Input/Anode - Pin 2: Output/Cathode

Functional Features

  • Overcurrent Protection: Automatically limits current flow during overcurrent conditions.
  • Self-Recovery: Resets automatically once the fault is cleared, eliminating the need for replacement.

Advantages

  • Cost-Effective: Eliminates the need for frequent fuse replacements.
  • Space-Saving: Compact design suitable for space-constrained applications.
  • Reliable Protection: Offers consistent overcurrent protection for electronic circuits.

Disadvantages

  • Limited Voltage Rating: Suitable for low-voltage applications up to 30V.
  • Temperature Sensitivity: Performance may vary under extreme temperature conditions.

Working Principles

The MF-R090-2-99 operates based on the PTC effect, where its resistance increases significantly when subjected to overcurrent, limiting the current flow through the circuit. Once the fault is removed, the device cools down and returns to its low-resistance state.

Detailed Application Field Plans

The MF-R090-2-99 is widely used in various electronic applications, including: - Consumer Electronics: Such as smartphones, tablets, and portable electronic devices. - Automotive Electronics: For overcurrent protection in vehicle electronics. - Industrial Control Systems: Providing protection for control circuitry in industrial equipment.

Detailed and Complete Alternative Models

  • MF-R050-0-99: Lower hold current variant suitable for more sensitive electronics.
  • MF-R110-2-99: Higher hold current variant for applications with increased current requirements.

In conclusion, the MF-R090-2-99 resettable fuse offers reliable overcurrent protection with its self-recovery feature, making it a valuable component in a wide range of electronic applications.

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Перечислите 10 распространенных вопросов и ответов, связанных с применением MF-R090-2-99 в технических решениях.

  1. What is MF-R090-2-99?

    • MF-R090-2-99 is a resettable fuse designed to protect against overcurrent and overtemperature conditions in electronic circuits.

  2. What are the typical applications of MF-R090-2-99?

    • MF-R090-2-99 is commonly used in battery packs, power supplies, and other electronic devices to provide overcurrent protection.

  3. What is the operating voltage and current of MF-R090-2-99?

    • The operating voltage of MF-R090-2-99 is typically 30V, and the hold current is 0.9A.

  4. How does MF-R090-2-99 compare to traditional fuses?

    • MF-R090-2-99 is a resettable fuse, meaning it can automatically return to its normal state after the fault condition is removed, unlike traditional fuses that need to be replaced.

  5. Can MF-R090-2-99 be used in automotive applications?

    • Yes, MF-R090-2-99 is suitable for automotive applications where overcurrent protection is required.

  6. What is the temperature range for MF-R090-2-99?

    • MF-R090-2-99 has an operating temperature range of -40°C to 85°C, making it suitable for a wide range of environments.

  7. Is MF-R090-2-99 RoHS compliant?

    • Yes, MF-R090-2-99 is compliant with the Restriction of Hazardous Substances (RoHS) directive.

  8. Can MF-R090-2-99 be used in high-power applications?

    • MF-R090-2-99 is designed for low to moderate power applications, so it may not be suitable for high-power circuits.

  9. What is the typical response time of MF-R090-2-99?

    • The typical response time of MF-R090-2-99 is less than 0.1 seconds, providing fast protection against overcurrent events.

  10. Are there any specific soldering or mounting requirements for MF-R090-2-99?

    • MF-R090-2-99 can be soldered using standard reflow or wave soldering processes, and it can be mounted on PCBs using standard surface mount techniques.