PKM22EPPH4001-B0

Overview

The Murata PKM22EPPH4001-B0 is a through-hole piezoelectric buzzer component designed for external drive applications. It operates with a maximum supply voltage of 25V and produces a continuous tone at a fixed frequency of 4 kHz. The device delivers an acoustic output level of 75 dB and features a compact cylindrical form factor with a diameter of 22 mm and a height of 7 mm. It is rated for operation up to a maximum temperature of 70°C and complies with RoHS standards.

Feature Summary

• Piezoelectric transduction mechanism for reliable audio signaling
• External drive capability allowing flexible circuit integration
• Through-hole mounting style for secure PCB attachment

Applications

• General purpose audio indication in electronic devices
• Alarm systems requiring continuous tone alerts
• Industrial control panel status indicators

Procurement Notes

Verify the specific suffix B0 against manufacturer documentation to confirm exact acoustic and electrical tolerances. Ensure the driving circuit supports the required 25V maximum rating and 4 kHz frequency. Confirm that the 70°C maximum operating temperature aligns with the target environment conditions before finalizing procurement specifications.

Selection Notes

Select this component when a continuous tone alert is required rather than a single pulse. The 22 mm diameter provides a balance between acoustic output and board space. Consider the external drive requirement, which necessitates an additional oscillator or microcontroller interface compared to self-oscillating alternatives.

Part Context

This part belongs to the Murata PIEZORINGER series, which specializes in piezoelectric buzzers for various audio indication needs. The PKM series typically utilizes robust ceramic elements housed in durable casings suitable for industrial and consumer electronics environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.