Electrolytic Decoupling Capacitors – 100µF/25V (5 Pieces)

The 100µF/25V Electrolytic Decoupling Capacitor (5 Pieces) is a polarized passive electronic component used for power supply filtering, voltage stabilization, and noise reduction in electronic circuits. This pack contains five electrolytic capacitors, each having a capacitance value of 100 microfarads (µF) and a maximum voltage rating of 25 volts.

These capacitors are commonly used as decoupling capacitors, which means they help maintain a stable power supply voltage for electronic components by reducing unwanted voltage fluctuations and electrical noise caused by sudden changes in current demand.

Working Principle

An electrolytic capacitor stores electrical energy in an electric field between its internal conductive layers. When connected to a power supply line, it charges and releases energy whenever required. During sudden current changes in a circuit, the capacitor provides additional current temporarily, helping keep the supply voltage stable.

As a decoupling capacitor, it acts as a local energy reservoir near electronic components such as microcontrollers, ICs, sensors, and digital circuits. It absorbs voltage spikes and suppresses unwanted noise generated by switching operations.

Specifications

• Capacitance: 100µF (Microfarads)

• Voltage Rating: 25V DC

• Type: Electrolytic Capacitor

• Polarity: Polarized (+ and - terminals)

• Quantity: 5 Pieces

• Mounting Type: Through-Hole PCB Mount

Important Features

• Provides effective power supply filtering

• Reduces electrical noise and voltage ripple

• Improves circuit stability

• High capacitance in a compact size

• Suitable for low-voltage electronic circuits

• Easy PCB installation

• Reliable performance for general electronics applications

Common Applications

The 100µF/25V Electrolytic Decoupling Capacitor is widely used in:

• Microcontroller circuits (Arduino, Raspberry Pi, ESP modules)

• Power supply filtering circuits

• Audio amplifier circuits

• Motor driver circuits

• Sensor and control circuits

• PCB power stabilization

• Embedded system projects

• Robotics and automation projects

• Electronic repair and replacement applications

Polarity Information

Electrolytic capacitors are polarized components, meaning they must be connected correctly:

• Positive (+) terminal → Higher voltage side

• Negative (-) terminal → Ground or lower voltage side

Connecting the capacitor in reverse polarity can cause overheating, leakage, or permanent damage.

Advantages

• Excellent filtering capability

• Low cost and widely available

• Suitable for smoothing DC voltage

• Helps protect sensitive electronic components

• Improves reliability of electronic circuits

The Electrolytic Decoupling Capacitor – 100µF/25V (5 Pieces) is an essential component for electronics engineers, students, technicians, and hobbyists. Its high capacitance value and reliable voltage rating make it ideal for improving power stability, reducing noise, and enhancing the performance of various electronic circuits and DIY projects.