1.2K Ohms (1/4 Watt) Resistor

Introduction

The 1.2K Ohms (1/4 Watt) resistor is a crucial component in electronic circuits, known for its precise resistance value and dependable power rating. With a resistance of 1,200 Ohms and a power rating of 1/4 Watt, this resistor is widely used in various applications to manage current and voltage effectively. Its compact size and reliable performance make it a preferred choice for both professional and hobbyist circuit designs.

Key Specifications

• Resistance Value: 1,200 Ohms (1.2K Ohms)
• Power Rating: 1/4 Watt (250 mW)
• Tolerance: Typically ±5% or ±1%, depending on the model
• Temperature Coefficient: ±200 to ±400 ppm/°C, ensuring consistent resistance across different temperatures

Construction and Design

The 1.2K Ohms resistor is usually made from materials like carbon film, metal film, or metal oxide. It features a cylindrical body with color bands indicating its resistance value and tolerance. The resistor has axial leads, which are suitable for through-hole mounting on printed circuit boards (PCBs) or breadboards. Its compact and lightweight design allows for easy integration into various circuit configurations, from densely packed boards to more spacious layouts.

Applications

The 1.2K Ohms resistor is employed in a range of electronic circuits and applications, including:

• Voltage Dividers: Ideal for use in voltage divider circuits to adjust and scale down voltage levels for components such as sensors, microcontrollers, and analog-to-digital converters.
• Current Limiting: Protects sensitive components like LEDs by limiting the current flow, preventing damage, and extending the component’s lifespan.
• Signal Conditioning: Helps in filtering and stabilizing signals in communication and audio circuits, ensuring clean and accurate signal transmission with minimal interference.
• Transistor Biasing: Assists in setting the correct bias point for transistors in amplifier circuits, allowing for optimal performance and reducing signal distortion.
• 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 that can lead to unreliable operation.

Advantages

• Precision: Provides accurate and stable resistance values, ensuring reliable performance and consistent operation in various electronic applications.
• Durability: Designed to endure temperature fluctuations, voltage variations, and other environmental factors, making it suitable for long-term use.
• Versatility: The 1.2K Ohms resistance value is adaptable for numerous applications, including voltage regulation, current limiting, signal conditioning, and biasing, offering flexibility in circuit design.
• Compact Size: Its small and lightweight design allows for easy integration into both densely packed and more open circuit layouts, fitting well into diverse PCB designs.

Conclusion

The 1.2K Ohms (1/4 Watt) resistor is an essential component for managing current and voltage 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, current limiting circuits, signal conditioning, or transistor biasing, this resistor ensures stable and efficient performance, contributing to effective and reliable circuit design.

22 Ohms (1/4 Watt) (Pack of 10)