120K Ohm Resistor 1/4 Watt (Pack of 10)

The 120K Ohm 1/4 Watt Resistor is a fixed-value passive electronic component used to control current flow, divide voltage, bias transistors, and stabilize signals in electrical and electronic circuits. With a resistance value of 120,000 ohms (120KΩ) and a power rating of 0.25 watts (1/4W), it is widely used in low-current applications, embedded systems, Arduino projects, sensor circuits, and educational electronics experiments.

Resistors are essential components in electronic circuit design and help maintain proper voltage and current levels for reliable operation. The 120KΩ resistor is commonly used in voltage divider networks, pull-up and pull-down resistor configurations, transistor biasing circuits, signal conditioning applications, RC timing circuits, and sensor interface designs. Its high resistance value makes it particularly suitable for low-current and high-impedance applications.

Manufactured using high-quality carbon film or metal film technology, these resistors offer stable resistance values, low electrical noise, and dependable long-term performance. Their standard through-hole axial-lead design enables easy installation on breadboards, prototype boards, and printed circuit boards (PCBs), making them suitable for both prototyping and permanent circuit assembly.

As a non-polarized component, the resistor can be connected in either direction without affecting circuit functionality, allowing simple and convenient installation.

Key Features

• Resistance Value: 120K Ohms (120,000Ω)

• Power Rating: 1/4 Watt (0.25W)

• Fixed resistor type

• Non-polarized component

• Stable and accurate resistance value

• Low noise characteristics

• Durable and reliable construction

• Easy installation on breadboards and PCBs

• Suitable for low-current electronic circuits

Technical Specifications

• Resistance: 120KΩ

• Power Rating: 0.25W (1/4 Watt)

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

• Type: Carbon Film or Metal Film

• Mounting Type: Through-hole

• Lead Type: Axial leads

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. The 120KΩ resistor is commonly used where high resistance is required for voltage division, timing circuits, signal conditioning, and low-current control applications.

Applications

• Arduino and microcontroller projects

• Pull-up and pull-down resistor circuits

• Voltage divider networks

• Transistor biasing circuits

• Sensor interface circuits

• Signal conditioning applications

• RC timing circuits

• Embedded system development

• Electronics prototyping

• Educational and laboratory experiments

• Consumer electronics repair

• Industrial control systems

Advantages

• Reliable current and voltage regulation

• Stable electrical performance

• Long service life

• Easy installation and replacement

• Compact and lightweight design

• Cost-effective electronic component

• Suitable for students, hobbyists, and professionals

• Compatible with breadboards and PCBs

Package Contents

• 10 × 120K Ohm 1/4 Watt Resistors

The 120K Ohm 1/4 Watt Resistor (Pack of 10) is a reliable and versatile electronic component that provides effective voltage division, signal conditioning, current regulation, and circuit protection, making it an essential part of electronics learning, prototyping, repair, and embedded system development.