RXEF185 Product Overview

Introduction

RXEF185 is a resettable polymeric positive temperature coefficient (PPTC) device that belongs to the category of electronic components. This entry provides an overview of the basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of RXEF185.

Basic Information Overview

• Category: Electronic Components
• Use: Overcurrent Protection
• Characteristics: Resettable, Polymeric, Positive Temperature Coefficient
• Package: Radial Leaded
• Essence: Provides overcurrent protection by increasing resistance when current exceeds a certain threshold
• Packaging/Quantity: Available in reels with varying quantities

Specifications

• Maximum Voltage: 60V
• Hold Current: 1.85A
• Trip Current: 3.7A
• Operating Temperature Range: -40°C to 85°C
• Resistance at Max Current: <0.1Ω
• Resistance at Trip Current: >2Ω

Detailed Pin Configuration

The RXEF185 has a radial leaded package with two pins. Pin 1 is the positive terminal, and pin 2 is the negative terminal.

Functional Features

• Resettable: The device resets automatically once the fault condition is removed.
• Overcurrent Protection: Increases resistance when the current exceeds the trip current, limiting the flow of current through the circuit.
• Reliable Operation: Provides consistent protection against overcurrent events.

Advantages and Disadvantages

Advantages

• Resettable nature allows for reuse after fault conditions are resolved.
• Provides effective overcurrent protection in various electronic circuits.
• Reliable performance across a wide operating temperature range.

Disadvantages

• May have a higher initial cost compared to traditional fuses.
• Limited to specific voltage and current ratings.

Working Principles

When the current flowing through the RXEF185 exceeds the trip current, the device heats up and undergoes a transition from a low-resistance state to a high-resistance state. This increase in resistance limits the current flow, providing overcurrent protection. Once the fault condition is removed, the device cools down and returns to its low-resistance state, allowing normal operation to resume.

Detailed Application Field Plans

RXEF185 is commonly used in various electronic circuits and devices requiring overcurrent protection, including: - Power Supplies - Battery Management Systems - Automotive Electronics - Consumer Electronics

Detailed and Complete Alternative Models

Some alternative models to RXEF185 include: - RXEF110: Lower hold and trip currents for applications with lower power requirements. - RXEF250: Higher hold and trip currents for applications with higher power requirements. - RXEF185H: A variant with enhanced environmental durability for harsh operating conditions.

In conclusion, RXEF185 is a resettable PPTC device designed to provide reliable overcurrent protection in electronic circuits. Its unique characteristics, functional features, and application versatility make it a valuable component in various industries.

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