TDK PiezoListen™ Series Piezoelectric Speaker, Model PHUA2010-049B-00-000

 Key Specifications (Electrical / Mechanical / Environmental)

1.1 Dimensions & Structure

Outline: Rectangular ultra-thin SMD type, no magnet and coil.Dimensions (L × W × T): 20.0mm × 10.0mm × 0.49mm (Tolerance: ±0.2mm / ±0.05mm)Weight: Approx. 0.8g. Ultra-thin and lightweight to save installation space.

1.2 Electrical Characteristics

Maximum Operating Voltage: 24Vp-p (±12V); Recommended driving voltage: 12Vp-p (±6V)Capacitance: 1.0μF ±30% (Test condition: 1kHz / 1Vrms)Operating Frequency Range: 100Hz ~ 20kHz, covering full frequency band for human voice, prompt tones and alarm sounds.Typical Power Consumption: 0.6Wrms @ 1kHz, featuring low power consumption.Sound Pressure Level (SPL): 85 ~ 90dB (Typical) @ 1kHz, 12Vp-p, 10cm distance.

1.3 Environmental & Compliance

Operating Temperature Range: −40℃ ~ +85℃, industrial wide temperature range.Environmental Compliance: RoHS compliant, lead-free and halogen-free, meeting REACH standards.Packaging: Supplied in trays, 80 pieces per tray. Minimum order quantity: 400 pieces.Product Status: Mass production, long-term stable supply.

2. Product Features & Working Principle

2.1 Core Advantages (vs. Traditional Dynamic Speakers)

• Ultra-thin profile: Thickness of only 0.49mm. It can be mounted on PCB or inner housing without occupying vertical space.

• Low power consumption & high efficiency: Generates sound based on inverse piezoelectric effect. Without coil and magnet, its power consumption is much lower than dynamic speakers.

• Wide frequency response: 100Hz ~ 20kHz. It delivers clear human voice and loud high-frequency sound, ideal for voice playback and alarm application.

• High reliability: No moving parts. Excellent vibration and shock resistance with service life over 100,000 hours.

• Easy integration: Compatible with SMD mounting, supporting automatic soldering for mass production.

2.2 Working Principle

This component adopts the inverse piezoelectric effect of piezoelectric ceramics. When alternating voltage is applied to the ceramic sheet, it will produce high-frequency mechanical vibration and drive air to generate sound. Different from dynamic speakers which work via electro-magneto-mechanical conversion, piezoelectric elements realize direct electro-mechanical conversion, with simpler structure and higher efficiency.

3. Application Scope

3.1 Consumer Electronics

• Smart remote controls: Key prompt tones and low battery alarms.

• Bluetooth headsets & speakers: Ultra-thin sound units and voice broadcast.

• Smart home devices: Status prompts and alarm sounds for gateways, cameras and sensors.

• Wearable devices: Message reminders and alarms for smart watches and bracelets.

3.2 Industrial & IoT Devices

• Industrial control panels: Device status tones, fault alarms and operation feedback.

• IoT modules: Voice prompts and alarms for NB-IoT, Cat.1 and Bluetooth modules.

• Sensor equipment: Over-limit alarms for temperature, humidity, pressure and gas sensors.

• Testing instruments: Prompt tones and buzzer sounds for multimeters, oscilloscopes and other testers.

3.3 Medical & Security Products

• Portable medical devices: Operation prompts and result broadcast for blood glucose meters and electrocardiograph monitors.

• Security equipment: Alarm sounds and doorbell tones for access control systems, cameras and alarms.

• Automotive accessories: Prompt tones for parking sensors and tire pressure monitoring systems (General grade, not for automotive specification).

3.4 Other Applications

• White goods: Operation prompts and fault alarms for refrigerators, washing machines and rice cookers.

• Toys & game consoles: Sound effects and voice prompts.

• Ultra-thin terminals: Sound output for card-style and slim electronic products.

4. Function Summary

PHUA2010-049B-00-000 is an ultra-thin, low-power piezoelectric sound element with wide frequency response. It mainly outputs clear voice, prompt tones and alarm sounds in limited space. As an ideal replacement for traditional dynamic speakers, it is widely used in consumer electronics, industrial equipment, IoT products and other fields requiring slim design, low power consumption and high reliability.