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Product Detailed Parameters
- Description：BUZZER PIEZO 20V 45.4MM TH
- Series：AT
- Mfr：PUI Audio, Inc.
- Package：Tray
- Driver Circuitry：Transducer, Externally Driven
- Input Type：Peak-Peak Signal
- Frequency：2.5kHz
- Technology：Piezo
- Operating Mode：-
- Duration：-
- Sound Pressure Level (SPL)：120dB @ 20V, 10cm
- Current - Supply：80mA
- Port Location：Top
- Operating Temperature：-40°C ~ 105°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：PC Pins
- Height - Seated (Max)：0.555" (14.10mm)
- Voltage - Rated：20 V
- Voltage Range：3 ~ 30V
- Size / Dimension：1.787" Dia (45.40mm)
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Overview
The AT-4625-TT-HT-R is an externally driven piezoelectric transducer manufactured by PUI Audio, Inc. It features a through-hole mounting style with PC pins and includes attached 10cm leads for flexible integration. The component operates at a rated voltage of 20 V peak-to-peak and draws a current of 80 mA. It delivers a sound pressure level of 120 dBA at the rated voltage with a resonant frequency of 2.5 kHz. The unit incorporates a 0.14 µF capacitor and is designed for high-output audio alerting applications.
Feature Summary
- Externally driven piezoelectric design for high acoustic output
- Integrated 10 cm lead wires for simplified circuit connection
- Through-hole mounting configuration with PC pins
- Built-in 0.14 µF capacitor for operational stability
Applications
- Industrial alarm systems requiring high-decibel alerts
- Security sirens and warning devices
- Medical equipment audible indicators
- Heavy-duty consumer electronics feedback
Procurement Notes
Verify the specific datasheet version to confirm RoHS compliance status and REACH SVHC declarations prior to procurement. Ensure the driving circuit can supply the required 80 mA current at 20 V peak-to-peak without exceeding thermal limits. Confirm that the 10 cm lead length and through-hole pin spacing align with the target PCB layout constraints. Cross-reference the manufacturer's latest documentation for any updates regarding material composition or environmental certifications.
Selection Notes
Select this component when a high-intensity 120 dBA audio signal is necessary in environments with significant background noise. The external drive requirement allows for precise control over the waveform and duty cycle via the host circuitry. The integrated capacitor simplifies the driver design by reducing external component count. Consider the physical dimensions and lead length during mechanical assembly planning to ensure adequate clearance within the enclosure.
Part Context
This transducer belongs to PUI Audio's line of externally driven piezoelectric buzzers, which are engineered for robust performance in demanding industrial and commercial settings. Unlike self-excited buzzers, these components require an external oscillator or microcontroller to generate the drive signal, offering greater flexibility in tone and modulation. The series is characterized by high sound pressure levels and durable construction suitable for continuous operation.
Replacement Considerations
Direct substitutes include other externally driven piezo transducers from PUI Audio with similar 2.5 kHz resonance and 120 dBA output, such as the AT-3046-TT-R if lower volume is acceptable. Verify that any replacement maintains the through-hole mounting style and compatible operating voltage range of 20 V peak-to-peak.
