140 Ohm Resistor

The 140 Ohm (140Ω) Resistor is a fixed passive electronic component used to control the flow of electric current, divide voltage, and protect sensitive electronic components in electrical and electronic circuits. It provides a resistance of 140 ohms (Ω), which limits current according to the circuit requirements and helps ensure safe and reliable operation.

A resistor works by opposing the flow of electrical current and converting a small amount of electrical energy into heat. The 140Ω resistance value is suitable for applications such as current limiting, transistor biasing, voltage division, signal conditioning, and protection of LEDs and integrated circuits.

Specifications

• Resistance Value: 140 Ohm (140Ω)

• Type: Fixed Resistor

• Power Rating: Depends on the model (commonly 1/4W, 1/2W, or 1W)

• Tolerance: Typically ±1% or ±5%

• Construction: Carbon Film or Metal Film (depending on the model)

• Mounting Type: Through-Hole PCB Mount or Surface Mount (SMD)

Working Principle

A resistor limits the amount of current flowing through a circuit by providing electrical resistance. According to Ohm's Law, the current depends on the applied voltage and the resistance value.

The 140Ω resistor helps:

• Limit current to protect LEDs and other sensitive components.

• Divide voltage in resistor network circuits.

• Control transistor base current.

• Stabilize signal levels in analog and digital circuits.

Features

• Fixed 140Ω resistance value

• Stable electrical performance

• Reliable current limiting

• Compact and lightweight design

• Easy to install on PCBs and breadboards

• Suitable for low-power electronic circuits

• Long operational life

Applications

The 140 Ohm Resistor is commonly used in:

• LED current limiting circuits

• Arduino and microcontroller projects

• Transistor biasing circuits

• Voltage divider networks

• Signal conditioning circuits

• Sensor interface circuits

• Audio electronics

• Robotics and automation projects

• PCB assembly and prototyping

• Electronic repair and maintenance

Advantages

• Protects electronic components from excessive current

• Improves circuit stability and reliability

• Low cost and widely used in electronics

• Compatible with a wide range of electronic devices

• Ideal for educational, DIY, and professional projects

The 140 Ohm Resistor is an essential electronic component for engineers, students, technicians, and hobbyists. Its reliable current control and voltage management capabilities make it suitable for a wide range of electronic applications, including circuit protection, signal processing, prototyping, and embedded system development.