TAT BPC4020-0930 Piezoelectric Ceramic Buzzer 40*20mm 9VDC 3000Hz Piezo Buzzer

The piezo buzzer is an electro‑acoustic component that generates sound by utilizing the piezoelectric effect of piezo ceramic sheet. When voltage is applied to the piezo ceramic element, it produces mechanical deformation and vibration, driving the vibration plate to emit clear prompt tones. Featuring low power consumption, small size and low electromagnetic interference, piezo buzzers are widely used in various electronic devices requiring audio reminder signals.

Product Advantages

1.Ultra-low Power Consumption

Piezo buzzers draw tiny operating current, greatly saving power for battery-operated portable products. No electromagnetic coil inside, so power consumption is far lower than electromagnetic buzzers. They are perfect for battery-powered handheld devices and low-power IoT products.

Keywords: low power buzzer, energy saving piezo buzzer, battery operated buzzer

2. Compact & Thin Profile Design

Piezo buzzers adopt thin ceramic chip structure, with ultra-thin thickness and small footprint. It saves PCB space and fits slim, miniaturized electronic equipment. With simple internal structure, high shock resistance and long service life.

Keywords: thin piezo buzzer, small size buzzer, micro piezo buzzer, slim buzzer

3. Low EMI & High Stability

Without coil and magnetic parts, piezo buzzers produce little electromagnetic interference, and will not disturb nearby sensitive circuits. Stable acoustic performance, sound output will not decay easily during long continuous working time.

Keywords: low EMI buzzer, high stability buzzer, anti-interference buzzer

4. Wide Voltage & Flexible Sound Tuning

Piezo buzzers support wide working voltage range. Sound tone can be adjusted by changing drive frequency. Available with or without driving circuit. Easy integration for home appliances, smart devices and alarm systems.

Keywords: piezo buzzer, wide voltage buzzer, sound adjustable buzzer

Technical Parameters

Product Applications

1.Consumer Electronics & Smart Devices

Piezo buzzers are widely used in smart home panels, remote controls, wearable devices, smart locks and small consumer electronics, for key tone, status reminder and warning alerts. Thin size is ideal for slim portable products.

2.Home Appliances

Applied in induction cookers, refrigerators, water heaters, range hoods, disinfection cabinets and other household appliances. Used for operation beep, timing reminder and fault warning. Provide stable audio feedback for household equipment.

3.Alarm & Security Systems

Suitable for smoke detectors, gas sensors, burglar alarms and emergency warning devices. It can generate sharp alert sound to remind users of abnormal events.

Note: For high decibel alarm requirement, choose piezo buzzer with housing.

4.Medical Electronic Devices

Commonly adopted in portable medical instruments, blood glucose meters, sphygmomanometers and health monitoring equipment. Low EMI feature ensures no interference to precision medical circuits.

5.Industrial Control & Instrumentation

Used in testing instruments, sensors, controllers and automation equipment for operation prompts and fault alarms. It works reliably under wide temperature range for industrial scenarios.

Product Selection Guide

When selecting a piezo buzzer, first confirm drive type: active built-in drive circuit type or passive type (need external square wave signal).

Select outline dimension and mounting method according to product installation space, match PCB pad size or assembly holes.

Confirm sound pressure requirement based on usage environment: 60~85dB for normal gentle reminder; 85~100dB for alarm and noisy environment.

Check operating temperature range, resonant frequency and reliability standards to ensure long-term stable working.