Passive Buzzer Module 5v

The Passive Buzzer Module 5V is an electronic sound module widely used in Arduino, ESP32, STM32, Raspberry Pi, and other embedded system projects for generating tones, alarms, and musical sounds. Unlike active buzzers that generate sound automatically when powered, this passive buzzer requires an external square wave signal for operation, allowing users to control both frequency and sound patterns.

The module operates within a voltage range of 3.3V to 5V, making it compatible with most popular microcontroller platforms. It is driven by a built-in 9012 transistor, ensuring stable and reliable sound output while protecting the control circuitry.

By adjusting the signal frequency between approximately 2KHz and 5KHz, users can create different tones and even simple melodies such as musical notes. The module includes a compact PCB with mounting holes for easy installation and comes with connection wires for convenient interfacing.

Its low power consumption and simple design make it ideal for alarms, warning systems, educational projects, and sound feedback applications.

Specifications

• Product Type: Passive Buzzer Module
• Operating Voltage: 3.3V – 5V
• Driver Component: 9012 Transistor
• Control Method: External Square Wave Signal
• Recommended Frequency Range: 2KHz – 5KHz
• PCB Dimensions: 3.3 × 1.3 cm
• DuPont Cable Length: 21 cm
• Mounting Type: Bolt Hole Mounting
• Interface Pins:
  • VCC
  • GND
  • I/O Signal

Pin Definitions

• VCC: 3.3V – 5V Power Supply
• GND: Ground Connection
• I/O: Microcontroller Signal Input

Applications

• Arduino sound projects
• Alarm and warning systems
• Musical tone generation
• Notification systems
• Interactive electronics
• Embedded system feedback
• DIY electronics projects
• Educational learning kits
• Smart home alerts
• Robotics sound indicators