PTCCL21H172DBE

Introduction

PTCCL21H172DBE is a component belonging to the category of PTC thermistors. This entry provides an overview of its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

• Category: PTC Thermistors
• Use: Overcurrent protection, inrush current suppression
• Characteristics: Self-regulating, non-linear resistance with temperature, high stability
• Package: Radial leaded disc
• Essence: Ceramic material with barium titanate composition
• Packaging/Quantity: Typically available in reels or bulk packaging

Specifications

• Resistance: 1.7 ohms
• Maximum Voltage: 30V
• Maximum Current: 5A
• Operating Temperature Range: -40°C to 125°C
• Tolerance: ±10%

Detailed Pin Configuration

The PTCCL21H172DBE has two radial leads for easy integration into circuit designs. The pinout configuration is as follows: - Pin 1: Positive lead - Pin 2: Negative lead

Functional Features

• Self-Regulating: Exhibits a positive temperature coefficient, leading to increased resistance with temperature rise
• Overcurrent Protection: Acts as a self-resetting fuse, limiting excessive current flow
• Inrush Current Suppression: Effectively reduces the initial surge of current during power-on

Advantages and Disadvantages

Advantages

• Self-regulating nature provides inherent protection against overcurrent conditions
• Non-linear resistance characteristic allows for precise current limiting
• High stability ensures consistent performance over a wide temperature range

Disadvantages

• Limited precision compared to precision resistors
• Sensitivity to ambient temperature variations may affect performance in extreme environments

Working Principles

The PTCCL21H172DBE operates based on the principle of positive temperature coefficient (PTC) behavior. As the temperature increases, the resistance of the thermistor rises, effectively limiting the current flow through the circuit. This self-regulating property makes it suitable for applications requiring overcurrent protection and inrush current suppression.

Detailed Application Field Plans

Overcurrent Protection

In circuits where sensitive components need protection from excessive current, the PTCCL21H172DBE can be used to limit the current flow and prevent damage to the components.

Inrush Current Limiting

During power-on, electronic devices often experience a surge of current that can stress the components. By incorporating the PTCCL21H172DBE, the inrush current can be suppressed, reducing stress on the system.

Detailed and Complete Alternative Models

• PTCCL21H102DBE: Similar characteristics with a lower resistance value
• PTCCL21H202DBE: Higher resistance variant for specific current limiting requirements
• PTCCL21H152DBE: Lower tolerance version for applications demanding tighter resistance control

In conclusion, the PTCCL21H172DBE PTC thermistor offers effective overcurrent protection and inrush current suppression in various electronic circuits. Its self-regulating nature, high stability, and compact package make it a versatile choice for diverse applications.

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