QSD123A4R0 Product Overview

Introduction

The QSD123A4R0 is a versatile electronic component that belongs to the category of surface mount resistors. This entry provides an in-depth overview of the product, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Surface Mount Resistor
• Use: The QSD123A4R0 is commonly used to limit current, divide voltages, and terminate transmission lines in various electronic circuits.
• Characteristics: It exhibits high precision, stability, and reliability in diverse applications.
• Package: The resistor is typically packaged in a small, rectangular form factor suitable for surface mounting on printed circuit boards (PCBs).
• Essence: Its essence lies in providing precise resistance values in a compact package for modern electronic designs.
• Packaging/Quantity: The QSD123A4R0 is usually available in reels containing a specific quantity, typically 1000 pieces per reel.

Specifications

• Resistance Value: 4.0 Ohms
• Power Rating: 1/8 Watt
• Tolerance: ±0.5%
• Temperature Coefficient: ±100 ppm/°C
• Operating Temperature Range: -55°C to +155°C

Detailed Pin Configuration

The QSD123A4R0 features a standard surface mount package with two terminals for easy integration into PCB designs. The pin configuration follows industry-standard guidelines, ensuring compatibility with various circuit layouts.

Functional Features

• Precision: The resistor offers high precision in maintaining the specified resistance value under varying operating conditions.
• Stability: It demonstrates excellent stability over time and temperature, ensuring consistent performance in electronic circuits.
• Reliability: The QSD123A4R0 is highly reliable, making it suitable for critical applications where consistent performance is essential.

Advantages and Disadvantages

Advantages

• High precision and stability
• Compact form factor for space-constrained designs
• Reliable performance in diverse operating conditions

Disadvantages

• Limited power handling capability compared to larger through-hole resistors
• Sensitive to excessive heat due to its small size

Working Principles

The QSD123A4R0 operates based on the fundamental principle of resisting the flow of electric current. When integrated into a circuit, it effectively limits the current or divides voltages as per the design requirements, contributing to the overall functionality of the electronic system.

Detailed Application Field Plans

The QSD123A4R0 finds extensive use in various electronic applications, including but not limited to: - Precision measurement equipment - Audio amplifiers and signal processing circuits - Communication systems and RF modules - Industrial control and automation systems - Consumer electronics and portable devices

Detailed and Complete Alternative Models

For applications requiring different resistance values or power ratings, alternative models such as QSD123A2R2 (2.2 Ohms) and QSD123A10R0 (10.0 Ohms) are available. These alternatives provide flexibility in selecting the most suitable resistor for specific design requirements.

In conclusion, the QSD123A4R0 surface mount resistor offers high precision, stability, and reliability in a compact package, making it an ideal choice for a wide range of electronic applications.

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