A small, efficient sound-producing
component that generates audible tones when powered. Ideal for alert systems,
notifications, and audio feedback in electronics projects.
Description
The Piezo
Buzzer is a widely used component in embedded systems, consumer
electronics, alarms, and other applications requiring sound signaling. It
operates on low power, making it ideal for portable and battery-powered
devices. Piezo buzzers are available in various forms, including through-hole
and surface-mount options, with different frequencies and voltages depending on
the application.
Piezoelectric
materials like quartz or ceramics are used in the buzzer's internal component,
which vibrates when voltage is applied. This vibration produces audible sound,
often in the form of a beeping or buzzing noise.
Specifications
Voltage:
Operating Voltage: Typically 3V to 24V DC (varies by
model).
Peak Voltage: Some models support higher peak
voltages for louder output.
Sound Output:
Sound Pressure Level: 85 dB to 100 dB (at 10 cm distance,
varies by model).
Frequency Range: Typically 2,000 Hz to 4,000 Hz,
depending on the design.
Current Consumption:
Low current draw, typically between 5mA
and 30mA, depending on the operating voltage.
Operating Temperature:
Typically ranges from -20°C to
+70°C (varies by manufacturer).
Shape and Size:
Available in various shapes, such as
round, square, or rectangular.
Common Sizes: 12mm, 20mm, and 30mm diameter, with
thickness ranging from 5mm to 12mm.
Output Type:
Continuous Tone: Emits a steady sound when powered.
Intermittent Tone: Generates pulses or beeps when driven
with a square wave.
Housing:
Usually made of plastic (often ABS or
PVC) for durability and lightweight construction.
Waterproof versions are available for
outdoor or industrial applications.
Mounting Type:
Through-Hole: For PCB mounting, generally has leads
for soldering.
Surface Mount: For use in compact and automated
systems.
Key Features
Low Power Consumption: Ideal for battery-powered devices and
energy-efficient designs.
Wide Voltage Range: Compatible with a range of voltages,
from low to high.
Compact Size: Small and lightweight, making it
suitable for tight spaces in embedded systems and consumer electronics.
Durable: Resistant to vibration and shock, making it reliable in harsh
conditions.
Easy to Use: Simple drive circuitry, typically
requires just a square wave or DC voltage for operation.
Applications
Alarms and Security Systems: Emits sound alerts for security
breaches, fire alarms, and other emergency notifications.
Consumer Electronics: Used in microwaves, washing machines,
timers, and other appliances to signal operational status or completion.
Embedded Systems: Common in microcontroller-based projects
for sound feedback or notification.
Automotive Applications: Used in cars for beeping signals in
safety systems, like seatbelt reminders or parking sensors.
Toys and Gadgets: Provides sound feedback in toys or
electronic games.
