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Product Detailed Parameters
- Description：BUZZER PIEZO 9V 23X23MM SMD
- Series：AST
- Mfr：Mallory Sonalert Products Inc.
- Package：Tape & Reel (TR)
- Driver Circuitry：Transducer, Externally Driven
- Input Type：Peak-Peak Signal
- Frequency：4kHz
- Technology：Piezo
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：100dB @ 9V, 10cm
- Current - Supply：8mA
- Port Location：Top
- Operating Temperature：-30°C ~ 70°C
- Approval Agency：-
- Ratings：Washable
- Ingress Protection：-
- Mounting Type：Surface Mount
- Termination：Solder Pads
- Height - Seated (Max)：0.437" (11.10mm)
- Voltage - Rated：9 V
- Voltage Range：1 ~ 30V
- Size / Dimension：0.906" L x 0.906" W (23.00mm x 23.00mm)
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Overview
The AST2311MATRQ is a surface-mount piezoelectric audio transducer manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 1 to 30 VDC and typically functions at 9 VDC with an 8 mA current draw. The device produces a sound pressure level of 100 dB when driven at 9 VDC. Its resonant frequency is specified at 4 kHz. The component utilizes a surface mount design for integration into printed circuit boards.
Feature Summary
- Surface mount construction for automated PCB assembly
- Externally driven piezoelectric transducer technology
- Wide operating voltage compatibility from 1 to 30 VDC
Applications
- Electronic equipment status indicators
- Consumer appliance alert systems
- Industrial control panel signaling
Procurement Notes
Verify the specific datasheet revision and RoHS compliance status directly with Mallory Sonalert or authorized distributors before procurement. Confirm that the surface mount footprint dimensions match the target PCB layout. Ensure the driving circuit can supply the required peak current without exceeding the maximum voltage rating of 30 VDC.
Selection Notes
Select this component when a compact, high-output audible signal is required for surface mount applications. The 100 dB output at 9 VDC provides significant audibility in moderate noise environments. Consider the 4 kHz frequency response for optimal human hearing perception. Verify that the external driver circuitry supports the necessary voltage swing for reliable actuation.
Part Context
This part belongs to the Mallory Sonalert AST series of piezoelectric transducers. These devices are designed as externally driven buzzers rather than self-oscillating units. They are commonly used in applications requiring precise control over tone and duration through external logic or microcontroller signals.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching the 23x23 mm package size, 4 kHz resonant frequency, and 100 dB SPL specifications.
