PF-21A29PQ

Overview

The PF-21A29PQ is a piezoelectric buzzer from Mallory Sonalert Products Inc. It operates on a DC voltage range of 3 to 24 volts and emits a fast pulse tone at a frequency of 3000 Hz. The device features through-hole PC pin termination for panel mounting. Its typical sound pressure level ranges from 80 to 100 dBA measured at a distance of one foot (30 cm). This component is CUL approved for industrial applications.

Feature Summary

• Generates a fast pulse audio signal for alarm indication
• Compatible with low-voltage DC power supplies
• Features through-hole printed circuit board pins
• Includes international safety certification

Applications

• Industrial control panels
• Appliance status indicators
• Security system alarms
• Electronic equipment alerts

Procurement Notes

Verify the specific voltage rating and acoustic output requirements against the official datasheet before procurement. Confirm that the through-hole PC pin configuration matches the target PCB layout. Ensure the operating environment supports the specified DC voltage range. Check for current manufacturing status and availability directly with the manufacturer or authorized distributors.

Selection Notes

Select this component when a compact, low-voltage piezoelectric indicator is required. The fast pulse mode provides distinct auditory feedback suitable for urgent notifications. The wide input voltage range allows flexibility in power supply design. Ensure the mounting method aligns with the available PCB space and mechanical constraints.

Part Context

This part belongs to the Mallory Sonalert piezoelectric buzzer family. These devices are designed for reliable audio signaling in various electronic systems. The series offers multiple tone options and mounting styles to suit different application needs.

Replacement Considerations

Consult the official Mallory Sonalert substitution guide for verified alternatives. Ensure any replacement matches the electrical specifications and physical dimensions.