14mm Piezo Passive Buzzer – Low-Power Variable Tone Buzzer (1–10kHz)

Product Description:

The 14mm Piezo Passive Buzzer is a compact, high-efficiency audio transducer designed for generating tones, beeps, and alerts in a wide range of electronic devices. Unlike electromagnetic buzzers that include an internal oscillator, this piezo buzzer requires an external square-wave signal (optimal around 4kHz) to produce sound. Simply power it with a microcontroller’s PWM or a signal generator to create tones like those used in microwaves, washing machines, and appliance notifications.

This buzzer is extremely power-efficient, drawing only 2–3mA, making it ideal for battery-powered devices. Designed with a protective black resonance chamber, it provides clear sound output while being moisture-resistant and EMI-safe. Piezo technology offers long operational life, high temperature endurance, and stable performance compared to coil-based buzzers.

Key Specifications:

• Type: Piezo Passive Buzzer

• Diameter: 14mm

• Operating Voltage: 3V–30V (Vp-p)

• Rated Voltage: 12V square wave

• Rated Current (Max): 2mA

• Sound Output: ≥ 80 dB @ 10 cm

• Resonant Frequency: 4000 ± 500 Hz

• Frequency Range: 1 kHz – 10 kHz

• Operating Temperature: -50°C to +100°C

• Weight: 1g

Features:

• Passive piezo buzzer – requires external square-wave input

• Very low current consumption (2–3mA)

• High temperature tolerance up to 100°C

• Long operational life, no moving parts

• Moisture-resistant and durable

• Produces variable tones (1–10kHz) via PWM

• Extremely low EMI compared to electromagnetic buzzers

• Ideal for battery-powered and sensitive electronic applications

Advantages Over Electromagnetic Buzzers:

Applications:

• Consumer appliances (microwave, washing machine, timers)

• Battery-powered devices

• Alarm and alert modules

• Arduino, STM32, ESP32 tone generation

• Industrial and automotive indicators

• Low-EMI electronic systems

Package Includes:

1 × 14mm Piezo Passive Buzzer

Note: Image is for representation purpose only.