400 Ohm 1/4 Watt Resistor (Pack of 10)

The 400 Ohm 1/4 Watt Resistor is a fixed-value passive electronic component used to control current flow, divide voltage, and protect sensitive electronic components in electrical and electronic circuits. With a resistance value of 400 ohms (400Ω) and a power rating of 0.25 watts (1/4W), it is suitable for a wide range of low-power applications in electronics, embedded systems, and educational projects.

Resistors are fundamental components in circuit design and are used to regulate current, create voltage drops, bias transistors, and ensure the safe operation of LEDs, sensors, integrated circuits, and microcontrollers. The 400Ω resistor is commonly used in LED current-limiting circuits, voltage divider networks, signal conditioning applications, and general-purpose electronic circuits.

Manufactured using high-quality carbon film or metal film technology, these resistors provide stable resistance values, low noise characteristics, and reliable long-term performance. Their standard axial-lead design allows easy installation on breadboards, prototype boards, and printed circuit boards (PCBs).

As a non-polarized component, the resistor can be connected in either direction, simplifying circuit assembly and making it suitable for beginners, students, hobbyists, and professionals.

Key Features

• Resistance Value: 400 Ohms (400Ω)

• Power Rating: 1/4 Watt (0.25W)

• Fixed resistor type

• Non-polarized component

• Stable electrical performance

• Low noise characteristics

• Durable and reliable construction

• Easy PCB and breadboard mounting

Technical Specifications

• Resistance: 400Ω

• Power Rating: 0.25W (1/4 Watt)

• Tolerance: Typically ±5% (may vary by manufacturer)

• Type: Carbon Film or Metal Film

• Mounting Type: Through-hole

• Axial lead configuration

Working Principle

A resistor opposes the flow of electrical current within a circuit. According to Ohm’s Law (V = IR), it creates a voltage drop proportional to the current passing through it. This helps regulate current, protect components from excessive current, and maintain stable circuit operation.

Applications

• LED current limiting circuits

• Arduino and microcontroller projects

• Voltage divider networks

• Transistor biasing circuits

• Sensor interface circuits

• Signal conditioning applications

• Embedded system projects

• Electronics prototyping

• Educational and laboratory experiments

• Consumer electronics repair

Advantages

• Reliable current control and voltage regulation

• Stable resistance value

• Easy to install and use

• Long operational lifespan

• Cost-effective electronic component

• Suitable for students, hobbyists, and professionals

• Compatible with breadboards and PCBs

Package Contents

• 10 × 400 Ohm 1/4 Watt Resistors

Overall, the 400 Ohm 1/4 Watt Resistor (Pack of 10) is a dependable electronic component that provides effective current limiting, voltage control, and circuit protection, making it an essential part of electronics prototyping, learning, repair, and embedded system development.