PKM22EPPH4005-B0

Overview

The Murata PKM22EPPH4005-B0 is a piezoelectric buzzer designed for audible signaling applications. It operates at a resonant frequency of 4000 Hz with a nominal voltage of 5 VDC. The device features a built-in oscillator circuit, allowing it to generate sound when supplied with a DC voltage without requiring external drive signals. Key electrical parameters include an operating current of approximately 15 mA and a sound pressure level of 85 dB or higher at 10 cm distance. The component utilizes a plastic housing suitable for surface mount technology.

Feature Summary

• Integrated oscillator circuit enables direct DC drive operation
• Piezoelectric element provides high reliability and long service life
• Compact surface mount package facilitates automated assembly

Applications

• Consumer electronics audio alerts
• Home appliance status indicators
• Office equipment warning signals

Procurement Notes

Verify the specific suffix B0 against the manufacturer's latest datasheet to confirm pinout orientation and mounting specifications. Ensure that the operating voltage and current ratings align with the target system's power supply capabilities. Check for RoHS compliance documentation if required by regional regulations. Confirm mechanical dimensions match the PCB footprint design to avoid assembly issues.

Selection Notes

Select this component when a simple, low-power audible alert is required without complex driver circuits. Consider the acoustic output requirements and available space on the printed circuit board. Evaluate the environmental conditions such as temperature range and humidity to ensure reliable operation throughout the product's lifecycle. Compare alternative packages if different mounting styles are preferred.

Part Context

This part belongs to Murata's line of piezoelectric buzzers, which are widely used in various electronic devices for providing audible feedback. The series offers different frequencies and mounting options to suit diverse application needs. These components are known for their robustness and consistent performance in mass-produced consumer goods.

Replacement Considerations

Consult official substitution lists for compatible parts with similar form factors and electrical characteristics. Verify that any replacement maintains the same resonant frequency and sound pressure level to ensure consistent user experience. Check for equivalent mounting configurations to simplify inventory management.