PF-27N25WQ

Overview

The PF-27N25WQ is a piezoelectric audio indicator manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 3 to 28 VDC, with a rated voltage of 12 VDC. The device produces a fast pulsed tone at an oscillation frequency of 2500 Hz, with a tolerance of ±500 Hz. Maximum current consumption is specified in the datasheet. The unit features wire lead termination and is designed for chassis or panel mounting.

Feature Summary

• Generates a fast pulsed acoustic signal using internal piezoelectric drive circuitry
• Operates on a wide DC voltage input range suitable for various industrial power supplies
• Constructed for durable chassis or panel installation environments

Applications

• Industrial machinery status indication
• Equipment alarm signaling
• Control panel audio alerts

Procurement Notes

Verify the specific datasheet version for exact maximum current consumption values, as general descriptions may omit precise electrical limits. Confirm that the 2500 Hz frequency aligns with acoustic requirements. Ensure mounting hardware compatibility with the chassis design. Check RoHS compliance documentation if required for your assembly process. Validate terminal connection methods against existing wiring harnesses.

Selection Notes

Select this component when a continuous audible alert with a pulsing characteristic is required. The wide operating voltage range simplifies integration into systems with varying supply rails. Consider the physical dimensions and mounting style during enclosure design. Compare sound pressure levels against ambient noise conditions to ensure audibility. Verify that the piezoelectric technology meets environmental durability standards.

Part Context

This part belongs to the PF series of audio indicators from Mallory Sonalert. The series typically includes piezoelectric buzzers designed for industrial applications. Similar parts in the lineup may offer different frequencies, tones, or mounting configurations. The PK series represents a related family of flange-mount indicators. Cross-reference specifications carefully when substituting components within the same manufacturer portfolio.

Replacement Considerations

The PK-27N25WQ is a similar flange-mount piezoelectric indicator from the same manufacturer. It shares comparable voltage ranges and frequency characteristics. Verify mechanical fitment differences between chassis and flange mounting styles before substitution.