390 Ohms (1/4 Watt) Resistor

Introduction

The 390 Ohms (1/4 Watt) resistor is a versatile and essential component in electronics, known for its reliability and efficiency in various applications. As a standard resistor, it plays a crucial role in regulating current, providing accurate resistance values, and ensuring the proper functioning of electronic circuits.

Key Specifications

• Resistance Value: 390 Ohms
• Power Rating: 1/4 Watt (250 mW)
• Tolerance: Typically ±5% or ±1% (depending on the specific model)

Construction and Design

This resistor is made from high-quality materials that ensure durability and stable performance. It is typically constructed using a metal oxide film or carbon film, which contributes to its precise resistance value and reliable operation. The resistor’s small, cylindrical body and leads are designed to fit into standard electronic circuit boards and connectors, making it suitable for both through-hole and surface-mount applications.

Applications

The 390 Ohms resistor is widely used in electronic circuits for various purposes:

• Current Limiting: It helps limit the current flow in LEDs, protecting them from excessive current and extending their lifespan.
• Voltage Dividers: It is used in voltage divider circuits to achieve desired voltage levels.
• Signal Processing: The resistor plays a role in filtering and stabilizing signals in audio and communication systems.
• Pull-Up/Pull-Down Resistors: It is employed in digital circuits to ensure proper logic levels and prevent floating inputs.

Advantages

• Precision: With a resistance value of 390 Ohms and a power rating of 1/4 Watt, this resistor provides accurate and consistent performance.
• Reliability: Its robust construction ensures long-term reliability and resistance to environmental factors.
• Versatility: It is suitable for a wide range of electronic applications, making it a staple component for hobbyists and professionals alike.

Conclusion

The 390 Ohms (1/4 Watt) resistor is an indispensable component in electronics, offering precise resistance values and reliable performance. Its versatility makes it suitable for a variety of applications, from current limiting and voltage dividing to signal processing and digital logic circuits. Whether you’re a beginner or an experienced electronics enthusiast, this resistor is a valuable addition to any toolkit.

270 Ohms (1/2 Watt) Resistor: Compact and Effective (Pack of 5)