AST0440MFD-03TRQ

$3.23

Description：BUZZER MAGN 3V 4X4MM W SMD
Series：AST
Mfr：Mallory Sonalert Products Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:ee1efa5a6411 Category: Alarms, Buzzers, and Sirens Brand: Mallory Sonalert Products Inc.

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Product introduction

Product Detailed Parameters

Description：BUZZER MAGN 3V 4X4MM 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：Magnetic
Operating Mode：-
Duration：-
Sound Pressure Level (SPL)：70dB @ 3V, 10cm
Current - Supply：100mA
Port Location：Top
Operating Temperature：-30°C ~ 70°C
Approval Agency：-
Ratings：-
Ingress Protection：-
Mounting Type：Surface Mount
Termination：Solder Pads
Height - Seated (Max)：0.091" (2.30mm)
Voltage - Rated：3 V
Voltage Range：2 ~ 4V
Size / Dimension：0.157" L x 0.157" W (4.00mm x 4.00mm)

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AST0440MFD-03TRQ

Overview

The AST0440MFD-03TRQ is an externally driven electromagnetic buzzer transducer manufactured by Mallory Sonalert Products Inc. It operates at a nominal voltage of 3V with a current rating of 100mA. The device produces a sound pressure level of 70dB at 3V measured at a distance of 10cm. Its resonant frequency is 4kHz. The component features surface mount solder pads for PCB integration and has compact physical dimensions of 4mm x 4mm x 2mm.

Feature Summary

Externally driven electromagnetic transducer design
Surface mount solder pad termination for automated assembly
Compact low-profile form factor suitable for space-constrained applications

Applications

Electronic equipment status indication
Consumer appliance audio alerts
Portable device signaling systems

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, as variations may exist within the AST series. Confirm that the external drive circuitry matches the 3V nominal voltage and 100mA current requirements specified in the official datasheet. Ensure compatibility with standard surface mount reflow soldering profiles for reliable attachment to the printed circuit board.

Selection Notes

Select this component when a low-cost, externally driven acoustic indicator is required for simple on/off signaling. The electromagnetic type offers consistent performance across temperature ranges compared to piezoelectric alternatives. Consider the 70dB output level relative to ambient noise conditions and the 4kHz frequency for audibility characteristics in the target application environment.

Part Context

This part belongs to the AST series of audio indicators from Mallory Sonalert. The series includes various electromagnetic and piezoelectric transducers designed for different mounting styles and acoustic outputs. The AST0440MFD-03TRQ specifically represents the smaller footprint electromagnetic option within the product line, distinct from larger industrial-grade alarms or higher-output models.