5V Active Mini Buzzer

The 5V Active Mini Buzzer is a compact self-driven piezoelectric buzzer that produces a sound when a 5V DC supply is applied. Unlike a passive buzzer, it has a built-in oscillator, so it does not require an external signal generator. It is widely used in Arduino projects, ESP32 applications, alarm systems, timers, security devices, and DIY electronics.

Features

• Full Name: 5V Active Mini Piezo Buzzer
• Built-in oscillator (self-driven)
• Operates directly from 5V DC
• Loud and clear sound output
• Low power consumption
• Compact through-hole package
• Easy to interface with microcontrollers
• Long operating life

Specifications

Pin Configuration

Note: The positive (+) terminal is usually marked on the buzzer body. Apply 3V–5V DC across the terminals to generate sound.

Applications

• Arduino projects
• ESP32 and Raspberry Pi projects
• Alarm systems
• Security devices
• Doorbell circuits
• Timer circuits
• Battery level indicators
• Educational electronics
• DIY electronics projects

Advantages

• No external oscillator required
• Easy to use
• Loud and clear sound
• Low power consumption
• Compact size
• Reliable operation
• Cost-effective

Size

Package Includes

• 1 × 5V Active Mini Buzzer

Note: This is an active buzzer with a built-in oscillator, so it will sound when powered with 3V–5V DC. Do not use it as a passive buzzer for tone generation, as its frequency cannot be controlled externally. Ensure the polarity is correct during installation to prevent damage.