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Product Detailed Parameters
- Description：BUZZER PIEZO 3V 9X9MM W SMD
- Series：AST
- Mfr：Mallory Sonalert Products Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Driver Circuitry：Transducer, Externally Driven
- Input Type：Peak-Peak Signal
- Frequency：4kHz
- Technology：Piezo
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：78dB @ 12V, 10cm
- Current - Supply：5mA
- Port Location：Side
- Operating Temperature：-40°C ~ 85°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Surface Mount
- Termination：Solder Pads
- Height - Seated (Max)：0.075" (1.90mm)
- Voltage - Rated：3 V
- Voltage Range：1 ~ 25V
- Size / Dimension：0.354" L x 0.354" W (9.00mm x 9.00mm)
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Overview
The AST0940MCTRQ is a surface-mount piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 1V to 25V with a typical drive voltage of 3V. The device draws a supply current of 5mA and produces a sound pressure level of 78dB at 12V measured from a distance of 10cm. It generates a single-tone signal at a frequency of 4kHz. The component features side port location for acoustic output.
Feature Summary
- Surface-mount construction for automated PCB assembly
- Piezoelectric transducer technology for reliable alert generation
- Internal driver circuitry for simplified integration
Applications
- Consumer electronics notification systems
- Medical device audio alerts
- Industrial control panel indicators
Procurement Notes
Verify the specific suffix MCTRQ against official Mallory documentation to confirm tape-and-reel packaging and moisture sensitivity class. Ensure the ordering part number matches the required surface-mount footprint and terminal configuration. Cross-reference the datasheet for any recent design changes or environmental compliance updates prior to final procurement.
Selection Notes
Select this component when a low-profile, surface-mount solution is required for compact electronic designs. The wide input voltage range allows flexibility in power supply design. Verify that the 78dB SPL meets the auditory requirements of the target application environment. Confirm compatibility with standard reflow soldering profiles during the design phase.
Part Context
This component belongs to the AST series of miniature piezo buzzers designed for space-constrained applications. Mallory Sonalert utilizes this series for high-volume consumer and industrial markets where consistent acoustic performance and small form factors are critical. The product line emphasizes reliability and ease of integration into modern printed circuit board assemblies.
FAQ
What is the operating voltage range for the AST0940MCTRQ?
The device supports an input voltage range of 1V to 25V.
Is the AST0940MCTRQ internally driven?
Yes, the component includes internal driving circuitry for direct connection to logic-level signals.
