The 100uF 16V Radial Electrolytic Capacitor is a fundamental component used for energy storage, power filtering, and signal coupling in electronic circuits. At Electrapac, we recommend this high-quality polarized capacitor for hobbyists and repair technicians in Bangladesh who need to stabilize voltage rails in DIY projects or repair consumer electronics.

Product Overview

This is a Polarized electrolytic capacitor, meaning it has a specific positive and negative terminal. With a capacitance of 100uF and a voltage rating of 16V, it is perfectly suited for low-voltage DC circuits, such as those powered by USB (5V), 9V batteries, or 12V power adapters. Its "Radial" design means both leads exit from the bottom, making it easy to mount vertically on breadboards or PCBs.

Key Features for Electrapac Customers

• Voltage Smoothing: Effectively filters out "ripple" or noise from power supplies, ensuring your microcontrollers (like Arduino or ESP32) receive a clean, steady voltage.

• Compact Footprint: The small cylinder shape fits into tight spaces on prototype boards, making it ideal for portable gadgets and miniature robotics.

• High Temperature Rating: Rated for up to 105°C, ensuring long-term reliability even in the warm, humid environment of a local workshop or enclosed casing.

• Low ESR Characteristics: Designed to handle rapid charging and discharging cycles with minimal energy loss and heat buildup.

• Pack of 5 Value: We provide these in a 5-piece set so you always have spares for multiple filter stages or upcoming projects.

Installation & Safety Guide

Because this is a Polarized component, correct orientation is critical for safety:

[Image showing the negative stripe on a capacitor and the longer positive lead]

1. Identify Polarity: Look for the Light-colored stripe on the side of the capacitor; this indicates the Negative (-) pin. Additionally, the Longer lead is the Positive (+) terminal.

2. Voltage Margin: Always use a capacitor with a voltage rating higher than your actual circuit voltage. For a 12V circuit, this 16V capacitor is a safe fit.

3. Correct Placement: Connect the positive lead to your VCC rail and the negative lead to your Ground (GND).

Safety Warning: Never connect an electrolytic capacitor backwards. If the polarity is reversed, the internal pressure will build up, causing the capacitor to "pop" or leak electrolyte fluid. Always double-check your connections before powering on your circuit.

Primary Applications

• Power Supply Filtering: Smoothing out the output of a 7805 voltage regulator.

• Audio Coupling: Allowing AC audio signals to pass while blocking DC offsets in amplifiers.

• Decoupling: Placing near an integrated circuit (IC) to prevent sudden power dips when the IC switches states.

• Timing Circuits: Working with a resistor to create simple time-delay functions (RC time constants).

• Repair Work: Replacing "bulging" or dried-out capacitors in old radios, routers, or chargers.

Why Shop at Electrapac?

We source our 100uF Capacitors with high-purity aluminum and durable seals to prevent premature drying and capacity loss. Visit us at for the passive components that keep your electronics running smoothly and noise-free.