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Product Detailed Parameters
- Description：BUZZER PIEZO 12V 43MM PNL MNT
- Series：AI
- Mfr：PUI Audio, Inc.
- Package：Tray
- Driver Circuitry：Indicator, Internally Driven
- Input Type：DC
- Frequency：2.9kHz
- Technology：Piezo
- Operating Mode：-
- Duration：-
- Sound Pressure Level (SPL)：-
- Current - Supply：-
- Port Location：-
- Operating Temperature：-
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Panel Mount
- Termination：Screw Terminal, Quick Connect Tab - 0.256" (6.50mm)
- Height - Seated (Max)：1.299" (33.00mm)
- Voltage - Rated：12 V
- Voltage Range：-
- Size / Dimension：1.693" Dia (43.00mm)
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Overview
The PUI Audio AI-381 is an analog MEMS microphone designed for surface-mount assembly. It features a rectangular SMD-5 package with dimensions of 3.5 mm x 2.65 mm x 1 mm. The device operates on a supply voltage range of 2.4 V to 3.6 V, drawing a typical current of 250 uA. Key electrical specifications include a sensitivity of -38 dB, a signal-to-noise ratio of 65 dB, and an impedance of 300 Ohms. It supports a frequency range from 20 Hz to 20 kHz and withstands sound pressure levels up to 160 dB.
Feature Summary
- Omnidirectional acoustic pickup pattern for uniform sound capture
- Low power consumption suitable for battery-operated devices
- Compact rectangular form factor optimized for space-constrained PCB layouts
Applications
- Smartphones and mobile communication devices
- Wearable technology and smartwatches
- Bluetooth headsets and audio accessories
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging options such as Reel or Cut Tape. Confirm RoHS compliance status through the provided datasheet before finalizing procurement orders. Ensure the selected variant matches the required operating temperature range for your specific application environment.
Selection Notes
Select this component when a low-profile, omnidirectional microphone is required for portable electronics. The 300 Ohm impedance and -38 dB sensitivity are suitable for standard audio interfaces. Consider the 2.7 V nominal operating voltage when designing the power supply circuitry for optimal performance and noise floor management.
Part Context
This part belongs to the PUI Audio MEMS microphone family, which focuses on providing high-fidelity audio solutions in miniature packages. These components are engineered to replace traditional electret microphones in modern consumer electronics, offering improved consistency and reliability for voice recognition and recording applications.
Replacement Considerations
Consult the official cross-reference list for verified substitutes. Ensure replacement parts match the SMD-5 footprint and pin configuration to maintain board compatibility without redesigning the layout.
