PK-21A36PQ

Overview

The PK-21A36PQ is a piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates on a continuous tone at a frequency of 3.5 kHz with an acoustic output of 85 dB measured at 12V. The device is rated for 12 VDC input and draws 18 mA of current. It features through-hole solder pin termination and measures 24 mm in diameter by 14 mm in height.

Feature Summary

• Internally driven piezoelectric design for direct voltage application
• Through-hole mounting configuration with solder pins
• Compact cylindrical form factor suitable for panel integration

Applications

• Industrial equipment status indication
• Consumer appliance audio alerts
• Transportation system signaling

Procurement Notes

Verify the specific operating voltage and frequency requirements against the datasheet before procurement. Confirm that the through-hole package dimensions align with the target PCB layout. Ensure the ambient temperature range meets the operational environment specifications to maintain acoustic performance integrity.

Selection Notes

Select this component when a compact, internally driven piezoelectric indicator is required. The 12 VDC rating suits low-voltage control circuits. Consider the 85 dB output level for audible notification needs in moderate noise environments. Verify compatibility with existing panel cutouts due to the 24 mm diameter constraint.

Part Context

This part belongs to the Mallory Sonalert product line, which specializes in audio indicators and alarms. The manufacturer has a history dating back to 1916, focusing on electronic components including capacitors and sound devices. The PK series represents their standard piezoelectric buzzer offerings for general-purpose indication tasks.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.