PK-21A29PQ

Overview

The PK-21A29PQ is a piezoelectric buzzer and sound indicator manufactured by Mallory Sonalert Products Inc. It operates on a continuous tone at a frequency of 3 kHz with a sound pressure level of 85 dB. The device is rated for a voltage range of 3 to 24 VDC and features through-hole solder pin termination. Its physical dimensions are 24 mm in diameter and 14 mm in height, designed for panel or board mounting applications.

Feature Summary

• Piezoelectric technology for reliable acoustic output
• Continuous tone operation at 3 kHz
• Wide DC voltage operating range
• Through-hole solder pin termination

Applications

• Industrial equipment status indication
• Control panel audio alerts
• Appliance signaling systems

Procurement Notes

Verify the specific voltage rating and acoustic specifications against the official Mallory Sonalert datasheet before procurement. Confirm that the through-hole solder pin configuration matches the target PCB layout. Ensure environmental compliance requirements align with RoHS standards as indicated in manufacturer documentation.

Selection Notes

Select this component when a compact, low-voltage piezoelectric indicator is required. The 3 kHz continuous tone provides clear auditory feedback. Consider the 24x14 mm form factor for space-constrained enclosures. Verify compatibility with the system's DC power supply range of 3 to 24 VDC.

Part Context

This part belongs to the Mallory Sonalert line of audio indicators and buzzers. It is categorized under piezoelectric transducers designed for visual and auditory signaling. The product series emphasizes durability and consistent performance in industrial and commercial environments requiring reliable alert mechanisms.

Replacement Considerations

The PF-21A29PQ is a comparable alternative within the same manufacturer portfolio. Verify functional equivalence regarding voltage range, acoustic output, and mechanical mounting dimensions before substitution.