Littelfuse Inc.
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RXEF300-AP
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RXEF300-AP

Product Overview

Category

The RXEF300-AP belongs to the category of electronic components, specifically in the field of resettable fuses.

Use

It is used to protect circuits from overcurrent and short-circuit conditions by providing a resettable mechanism for temporary disconnection.

Characteristics

  • Resettable fuse
  • Protects against overcurrent and short-circuit conditions
  • Automatic reset feature
  • Compact size

Package

The RXEF300-AP is typically available in tape and reel packaging for automated assembly processes.

Essence

The essence of the RXEF300-AP lies in its ability to provide reliable overcurrent protection while offering the convenience of automatic reset functionality.

Packaging/Quantity

It is commonly packaged in reels containing a specific quantity, such as 1000 pieces per reel.

Specifications

  • Voltage Rating: 30V
  • Current Rating: 3A
  • Operating Temperature Range: -40°C to 85°C
  • Hold Current: 3A
  • Trip Current: 6A

Detailed Pin Configuration

The RXEF300-AP features a standard two-pin configuration, with one pin serving as the input and the other as the output.

Functional Features

  • Overcurrent protection
  • Automatic reset after fault clearance
  • Fast response time
  • Compact design for space-constrained applications

Advantages and Disadvantages

Advantages

  • Resettable functionality reduces maintenance and replacement costs
  • Fast response time helps prevent damage to sensitive components
  • Compact size allows for integration into small form factor designs

Disadvantages

  • Limited hold current compared to traditional fuses
  • May not be suitable for high-power applications

Working Principles

The RXEF300-AP operates based on the principle of positive temperature coefficient (PTC) behavior. When an overcurrent condition occurs, the resistance of the PTC material increases, leading to a temporary interruption of the circuit. Once the fault is cleared, the PTC material cools down and returns to a low-resistance state, allowing the circuit to reset.

Detailed Application Field Plans

The RXEF300-AP is commonly used in various electronic devices and systems, including: - Consumer electronics - Automotive electronics - Industrial control systems - Power supplies - Battery management systems

Detailed and Complete Alternative Models

  • RXEF110-AP: 1.1A hold current, 2.2A trip current
  • RXEF250-AP: 2.5A hold current, 5A trip current
  • RXEF500-AP: 5A hold current, 10A trip current

In conclusion, the RXEF300-AP offers reliable overcurrent protection with the added benefit of automatic reset functionality, making it a valuable component in a wide range of electronic applications.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan RXEF300-AP dalam solusi teknis

  1. What is the RXEF300-AP?

    • The RXEF300-AP is a resettable polymeric positive temperature coefficient (PPTC) device used for overcurrent protection in various electronic circuits.

  2. What is the maximum voltage and current rating of the RXEF300-AP?

    • The RXEF300-AP has a maximum voltage rating of 30V and a maximum current rating of 3A.

  3. How does the RXEF300-AP work?

    • The RXEF300-AP operates by increasing its resistance when the current exceeds its rated threshold, effectively limiting the current flow to protect the circuit.

  4. What are the typical applications of the RXEF300-AP?

    • The RXEF300-AP is commonly used in battery packs, power supplies, USB ports, and other electronic devices requiring overcurrent protection.

  5. What is the operating temperature range of the RXEF300-AP?

    • The RXEF300-AP typically operates within a temperature range of -40°C to 85°C.

  6. Can the RXEF300-AP be used in automotive applications?

    • Yes, the RXEF300-AP is suitable for automotive applications, providing overcurrent protection in various vehicle electronics.

  7. Is the RXEF300-AP a one-time use device?

    • No, the RXEF300-AP is resettable, meaning it returns to its low-resistance state once the fault condition is removed.

  8. What are the physical dimensions of the RXEF300-AP?

    • The RXEF300-AP typically measures Xmm in length, Ymm in width, and Zmm in height.

  9. Does the RXEF300-AP require any special handling during installation?

    • It is recommended to follow standard ESD precautions and soldering guidelines when installing the RXEF300-AP to ensure proper functionality.

  10. Where can I find detailed specifications and datasheets for the RXEF300-AP?

    • Detailed specifications and datasheets for the RXEF300-AP can be found on the manufacturer's website or by contacting their technical support team.