ZT028LDCTB

Overview

The ZT028LDCTB is a piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. This component operates on a direct current voltage and is designed for audible signaling applications. It features a built-in oscillator circuit that generates sound when powered, eliminating the need for external drive signals. The device utilizes a piezoelectric element to convert electrical energy into acoustic output. Key specifications include its operating voltage range, frequency of operation, and sound pressure level at a specified distance. The unit is housed in a compact package suitable for surface mount or through-hole integration depending on the specific variant configuration.

Feature Summary

• Integrated oscillator circuit for direct DC drive capability
• Piezoelectric transducer technology for reliable acoustic generation
• Compact form factor designed for space-constrained electronic assemblies

Applications

• Consumer electronics audio alerts
• Industrial control panel signaling
• Medical device status indication

Procurement Notes

Verify the exact operating voltage and polarity requirements against the specific datasheet revision before procurement. Confirm the mounting style and terminal configuration match the target PCB layout. Ensure environmental ratings such as temperature range and humidity resistance meet the application's operational conditions. Cross-reference the part number suffixes to confirm material composition and lead finish specifications required for compliance standards.

Selection Notes

Select this component based on the required sound pressure level and operating frequency for the intended environment. Evaluate the physical dimensions to ensure compatibility with the enclosure design. Consider the power consumption constraints of the system to ensure the buzzer does not exceed available current limits. Verify that the acoustic performance meets regulatory noise emission standards for the final product deployment region.

Part Context

This part belongs to the Mallory Sonalert line of piezoelectric buzzers, which are widely used for audible notification in various electronic systems. The brand is known for producing reliable acoustic components that integrate oscillators directly into the package. These devices are commonly found in appliances, automotive systems, and office equipment where simple, robust signaling is required without complex driver circuits.

Replacement Considerations

Consult official substitution guides from Mallory Sonalert for verified equivalent parts. Ensure any replacement matches the original pinout, voltage rating, and acoustic output characteristics. Generic substitutes may differ in frequency response or durability under thermal stress.