PK-27A25WQ

Overview

The PK-27A25WQ is a piezoelectric buzzer from the Mallory Sonalert PK series, designed for industrial audio indication. It operates on a continuous tone at a frequency of 2.5 kHz with a sound pressure level of 95 dBA. The device accepts a wide input voltage range of 3 to 24 VDC and draws 8 mA of current. It features wire lead termination and flange mount installation. Physical dimensions are 30 mm in diameter and 16 mm in height.

Feature Summary

• Piezoelectric construction for reliable acoustic output
• Wide operating voltage range for flexible power integration
• Flange mount design for secure panel attachment
• Continuous tone generation for steady state alerts

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Equipment fault detection units
• General purpose audible signaling devices

Procurement Notes

Verify the specific voltage rating and current consumption against the official datasheet before integration. Confirm that the flange mount dimensions match the enclosure cutout requirements. Ensure the operating environment temperature falls within the specified limits for long-term reliability. Cross-reference the terminal type with existing wiring harnesses.

Selection Notes

Select this component when a high-decibel continuous alert is required for panel-mounted applications. The wide voltage tolerance simplifies power supply design across various DC systems. Consider the physical size constraints and mounting method compatibility during the mechanical design phase. Evaluate acoustic requirements against the 95 dBA specification.

Part Context

This part belongs to the Mallory Sonalert PK series, which specializes in piezoelectric indicators. The series is known for robust performance in industrial environments. The manufacturer has a long history in producing audio warning devices. This specific model represents a standard configuration for general-purpose alarming tasks.

Replacement Considerations

Check for direct substitutes within the PK series with similar voltage and acoustic specifications. Verify pinout and mounting hole patterns if considering alternative brands. Ensure any replacement maintains the same continuous tone characteristic and flange mount style.