PB-4218NL

Overview

The PB-4218NL is an internally driven piezoelectric audio buzzer manufactured by Soberton Inc. It operates at a nominal voltage of 9V with a current draw of 50mA. The device produces a sound pressure level of 95dB and generates a tone frequency of 3.8kHz (also cited as 2800Hz in some documentation). Key physical dimensions include a maximum seated height of 0.709 inches and a diameter of 41.8mm. It features wire leads for panel or flange mounting and functions within an operating temperature range of -20°C to 60°C.

Feature Summary

• Internally driven piezoelectric design eliminates the need for external oscillators
• Flange and panel mount configuration with wire lead termination
• RoHS compliant construction ensuring environmental safety standards

Applications

• Industrial equipment status indication
• Consumer appliance audible alerts
• Security system sirens and alarms

Procurement Notes

Verify the specific datasheet version for exact acoustic parameters, as source data shows variation between 3.8kHz and 2800Hz frequencies. Confirm mounting hole patterns match the 41.8mm diameter specification. Ensure the 9V nominal voltage aligns with the target circuit supply rails. Check RoHS compliance certificates if required for specific regional regulations.

Selection Notes

Select this component when a self-contained, high-volume sound source is required without complex driver circuits. The 9V rating suits battery-powered or standard logic-supplied systems. Consider the 95dB output sufficient for moderate noise environments. Verify that the 50mA current consumption fits within the power budget constraints of the application design.

Part Context

This part belongs to the PB series of piezo buzzers from Soberton Inc., designed for general-purpose audio signaling. The series typically offers various voltage and frequency options. The PB-4218NL specifically targets applications requiring a robust, internally driven solution with straightforward wiring connections for easy integration into enclosures.

Replacement Considerations

Direct substitutes must match the 9V operating voltage, 41.8mm diameter, and internally driven piezo architecture. Verify that alternative parts provide comparable 95dB sound pressure levels and similar mounting configurations. Cross-reference pinout and lead lengths if space constraints are critical.