PT-1550WQ

Overview

The PT-1550WQ is an externally driven piezoelectric transducer manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 1 to 25 V peak-to-peak, with a rated voltage of 5 V. The device features a resonant frequency of 5 kHz and produces a sound pressure level of 80 dB at 5 V measured at 10 cm. Electrical consumption is approximately 1.5 mA. Physically, it measures 16.5 mm in diameter and 4 mm in height, utilizing custom wire leads for connection.

Feature Summary

• Externally driven piezoelectric technology
• High sound pressure level output
• Compact flange mount design

Applications

• Industrial equipment status indication
• Control panel audio alerts
• Portable device signaling

Procurement Notes

Verify the specific lead length and termination style of the custom wire leads against your assembly requirements before ordering. Confirm that the driving circuit can supply the necessary peak-to-peak voltage without exceeding the maximum rating. Ensure the mounting hole dimensions align with the 16.5 mm diameter specification for proper installation.

Selection Notes

Select this component when a compact, high-output indicator is required for space-constrained enclosures. It is suitable for applications needing a distinct audible alert at close range. Consider the external drive requirement; if internal oscillation is needed, a different buzzer type must be chosen. Verify compatibility with the available control signal voltage levels.

Part Context

This part belongs to the Mallory Sonalert transducer series, designed for integration into various electronic systems requiring reliable audio feedback. Unlike self-excited buzzers, this unit requires an external oscillator or microcontroller to generate the drive signal. It serves as a fundamental acoustic output component in industrial and commercial electronics.

Replacement Considerations

Direct replacements are limited due to the specific combination of size, voltage, and custom wiring. When substituting, ensure the new component matches the 16.5 mm diameter for mechanical fit and maintains similar SPL characteristics. Verify that the replacement supports the same 1-25 Vp-p operating range.