PFD-20A35EWQ

Overview

The PFD-20A35EWQ is an industrial-grade piezoelectric buzzer manufactured by Mallory Sonalert. It operates on a constant/fast pulse drive mode within a voltage range of 3 to 24 VDC. The device produces a sound pressure level of 95 dB and emits a tone frequency of 3.5 kHz. Its physical dimensions are 28 mm by 25 mm, designed for compact integration into electronic systems requiring reliable audible signaling.

Feature Summary

• Industrial-grade construction suitable for demanding environments
• Constant fast pulse operation mode for distinct auditory alerts
• Wide DC voltage compatibility ranging from 3 to 24 volts

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Electronic equipment audio feedback

Procurement Notes

Verify the specific suffix EWQ against official Mallory Sonalert documentation to confirm exact acoustic and electrical characteristics. Ensure the application circuit supports the required constant fast pulse drive mode. Confirm that the operating voltage remains within the specified 3 to 24 VDC range to maintain performance integrity.

Selection Notes

Select this component when a high-intensity 95 dB alert is required in a compact 28x25 mm form factor. It is appropriate for designs needing wide DC voltage tolerance without external regulation. Consider the constant fast pulse requirement for the driving logic before implementation.

Part Context

This part belongs to the Mallory Sonalert PFD series of piezoelectric buzzers. The series is characterized by robust industrial specifications and consistent acoustic output. The PFD variant specifically denotes the constant fast pulse operational mode, distinguishing it from continuous or slow pulse alternatives.

Replacement Considerations

Consult official Mallory Sonalert substitution guides for verified equivalents. Cross-reference dimensions and mounting configurations to ensure mechanical compatibility with existing assemblies.