680K Ohms (1/4 Watt) Resistor

Introduction

The 680K Ohms (1/4 Watt) resistor is a high-value resistor used extensively in electronic circuits for precise resistance needs. With a resistance of 680,000 Ohms and a power rating of 1/4 Watt, this resistor is essential for applications where accurate control of current and voltage is required. Its reliability and performance make it a popular choice for both professionals and hobbyists.

Key Specifications

• Resistance Value: 680,000 Ohms (680K Ohms)
• Power Rating: 1/4 Watt (250 mW)
• Tolerance: Typically ±5% or ±1%, depending on the specific model
• Temperature Coefficient: ±100 to ±200 ppm/°C, ensuring stable resistance performance across different temperatures

Construction and Design

The 680K Ohms resistor is generally manufactured from materials such as metal film, carbon film, or metal oxide. It features a cylindrical body with color bands indicating its resistance value and tolerance. The resistor comes with axial leads, which are suitable for through-hole mounting on printed circuit boards (PCBs) or breadboards. Its compact and lightweight design facilitates easy integration into various circuit layouts.

Applications

The 680K Ohms resistor is employed in a range of electronic applications, including:

• High-Value Voltage Dividers: Perfect for use in voltage divider circuits where high resistance values are needed to scale down voltage levels for components like sensors, microcontrollers, and analog-to-digital converters.
• Pull-Up/Pull-Down Resistors: Functions as pull-up or pull-down resistors in digital circuits to maintain stable logic levels and prevent floating states, ensuring reliable operation.
• Signal Conditioning: Assists in filtering and stabilizing signals in communication and audio circuits, providing clean and accurate signal transmission with minimal interference.
• Biasing Circuits: Used to set appropriate bias points for transistors and other active components, optimizing performance and minimizing signal distortion.
• Leakage Current Limiting: Helps limit leakage current in circuits, protecting sensitive components and ensuring stable and reliable operation.

Advantages

• Precision: Offers accurate and stable resistance values, crucial for maintaining consistent performance in various electronic applications.
• Durability: Designed to endure temperature variations, voltage changes, and other environmental factors, making it suitable for long-term use.
• High Resistance: With a resistance value of 680K Ohms, it is ideal for applications requiring high resistance levels, such as voltage dividers and signal conditioning.
• Compact Size: Its small and lightweight design allows for easy integration into both densely packed and more open circuit layouts, fitting well into various PCB designs.

Conclusion

The 680K Ohms (1/4 Watt) resistor is a key component for managing high resistance levels in electronic circuits. Its precise resistance value, durability, and versatility make it a valuable tool for engineers, hobbyists, and professionals. Whether used in voltage dividers, pull-up/pull-down configurations, signal conditioning, or biasing circuits, this resistor ensures reliable and stable performance, contributing to effective and efficient circuit design.

680K Ohms (1 Watt) Resistor: High-Value Precision Component (Pack of 5)