PL-27N26PSQ

Overview

The PL-27N26PSQ is a piezoelectric sounder manufactured by Mallory Sonalert Products Inc. This component operates at a frequency of 2700 Hz and produces a sound pressure level of 85 dB when driven by a DC voltage of 12 V. It features a plastic case with a square form factor, measuring approximately 27 mm on each side. The device utilizes a piezoelectric element to generate acoustic signals and is designed for through-hole mounting via two leads. Electrical characteristics include a maximum current consumption of 30 mA under rated conditions.

Feature Summary

• Piezoelectric transduction mechanism for reliable acoustic signal generation
• Plastic housing providing environmental protection for internal components
• Through-hole lead termination for standard PCB integration

Applications

• General purpose audible alarms in consumer electronics
• Status indication in industrial control panels
• Security system sirens and warning devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure compatibility with required voltage and frequency specifications. Confirm mechanical dimensions and terminal configuration match the target design constraints. Check for any recent updates to RoHS compliance status or material composition declarations before finalizing procurement decisions.

Selection Notes

Select this component based on its fixed electrical parameters including 12 VDC operation and 2700 Hz output frequency. Ensure the application environment supports the specified sound pressure level of 85 dB. Consider the physical size and mounting requirements relative to the available space on the printed circuit board. Evaluate thermal stability if operating in extreme temperature ranges.

Part Context

This part belongs to the PL series of piezoelectric sounders from Mallory Sonalert Products Inc. The series is characterized by compact plastic housings and standardized mounting configurations. These sounders are engineered for cost-effective audible signaling solutions across various electronic industries requiring reliable acoustic output without complex driver circuits.

Replacement Considerations

Consult official substitution guides for equivalent models with matching voltage, frequency, and mechanical footprint. Verify that alternative parts meet the same acoustic performance standards and regulatory certifications. Cross-reference pinouts and polarity requirements to ensure direct interchangeability without circuit modification.