5V Active Buzzer 🔊

The 5V Active Buzzer is a compact audio output component that generates a clear, continuous tone as soon as a DC voltage is applied. Unlike passive buzzers, it integrates an internal oscillating circuit, eliminating the need for an external signal source or waveform generator. This makes it ideal for simple, reliable audible alerts in electronics projects, including Arduino, Raspberry Pi, and other microcontroller-based systems.{IMG_TAG_0}

⭐ Key Features

• Built-in oscillator — no external driver or waveform required
• Continuous tone output at a preset frequency when powered
• 5 V DC operation for easy integration with common development boards
• 12 mm compact form factor for dense PCB layouts and modules
• Perfect for audible alerts, alarms, and status indicators in electronic circuits

📐 Technical Specifications

• Type: Active buzzer with internal oscillating circuit
• Supply Voltage: 5 V DC (nominal)
• Diameter: 12 mm
• Sound Output: Continuous tone at a predetermined frequency
• Polarity: Marked leads or housing (+ / −) for correct connection

🧰 Typical Applications

• Alarm and fault indication 🔔
• System status beeps for Arduino and Raspberry Pi projects
• Robotics and automation alerts 🤖
• Test fixtures, timers, and DIY electronics modules

⚙️ Integration Guide

• Connect + to 5 V and − to GND to produce a continuous tone.
• When driving from a microcontroller GPIO (Arduino, Raspberry Pi, ESP32, STM32), switch the buzzer via a small transistor or MOSFET if the pin’s current limit may be exceeded.
• Note: As an active buzzer, the pitch is fixed. For variable tones via PWM or frequency control, use a passive buzzer.

✅ Why Choose This Component?

• Minimal circuitry required — rapid prototyping for electronics components and modules
• Reliable operation at common 5 V system voltage
• Engineer- and hobbyist-friendly for alarms, alerts, and notifications