PF-27N26PSQ

Overview

The PF-27N26PSQ is a piezoelectric buzzer from Mallory Sonalert Products Inc., designed for through-hole mounting. It operates within a voltage range of 3 to 28V DC and draws current consistent with its internal drive circuitry. The device emits a continuous tone at a frequency of 2.5kHz with a sound pressure level of 90dB. Its physical dimensions are 30mm in diameter and 10mm in height, featuring solder pin terminations for PCB integration.

Feature Summary

• Integrates an internal driver circuit for direct connection to DC power sources without external oscillators.
• Produces a constant continuous tone audible alert suitable for industrial and commercial signaling applications.
• Utilizes piezoelectric technology for reliable acoustic output across the specified operating voltage range.

Applications

• Industrial machinery status indicators
• Commercial appliance operational alerts
• Electronic equipment fault signaling

Procurement Notes

Verify the specific voltage rating and termination style against your design requirements before ordering. Confirm RoHS compliance status with the supplier as environmental regulations vary by region. Ensure the through-hole footprint matches your PCB layout specifications. Check for any recent product change notifications that might affect form or function.

Selection Notes

Select this component when a high-decibel, continuous audio alert is required for panel or board-mounted applications. The wide input voltage range allows flexibility in system design. Consider the 30mm diameter for adequate space allocation on the printed circuit board. Evaluate the 90dB output against ambient noise levels to ensure audibility.

Part Context

This part belongs to the PF series of piezoelectric buzzers manufactured by Mallory Sonalert Products Inc. The series is characterized by through-hole construction and integrated driving electronics. It serves as a standalone audio indicator solution for systems requiring robust, self-exciting alarm signals.

Replacement Considerations

The PK-27N26PSQ is a related variant within the same manufacturer's portfolio. Verify if the alternative offers identical acoustic performance and electrical characteristics before substitution.