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The AST1028MK-03TRQ is a surface-mount electromagnetic buzzer manufactured by Mallory Sonalert Products Inc. It operates on a DC voltage range of 2 to 4V with a rated voltage of 3V. The device produces a sound pressure level of 90dB at 3V measured at 10cm distance, with a frequency of 2.83kHz. It draws a current of 100mA and utilizes an externally driven magnetic transducer mechanism. The component is packaged in a compact 10x10mm form factor with solder pad termination for PCB mounting.
Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required voltage and acoustic specifications. Confirm that the external drive circuitry matches the component's 100mA current requirement. Check for RoHS compliance documentation if environmental regulations apply to the final assembly. Ensure the surface mount process parameters align with the solder pad design.
Select this component when a high-volume surface mount solution is required for audible alerts. The externally driven nature allows for flexible waveform generation but requires additional driver circuitry compared to internally driven alternatives. Consider the 90dB output level suitability for the intended acoustic environment. Evaluate the 100mA current draw against the power budget of the host system.
This part belongs to the Mallory Sonalert family of audio indicators. It differs from piezoelectric models by using an electromagnetic coil and diaphragm. The TRQ suffix typically indicates a tape and reel packaging format suitable for automated pick-and-place assembly processes in high-volume manufacturing environments.
It is an externally driven magnetic buzzer, requiring an external oscillator circuit to generate the driving signal.
The component operates within a voltage range of 2 to 4V DC, with a rated voltage of 3V.