AI-221

Overview

The AI-221 is an internally driven electromechanical buzzer manufactured by PUI Audio, Inc. It operates at a rated voltage of 4.5V and produces sound at a frequency of 400Hz. The component features a flange design with wire leads for panel mounting. Its physical dimensions are specified as 32x17mm. This device functions as an audio magnetic indicator designed for embedded applications requiring audible alerts.

Feature Summary

• Internally driven electromechanical operation
• Audio magnetic indicator functionality
• Panel mount configuration with flange
• Wire lead termination

Applications

• Embedded system audible alerts
• Panel mounted equipment indicators
• General purpose alarm signaling

Procurement Notes

Verify RoHS compliance status carefully, as sources indicate non-compliance. Confirm the specific package variant matches the 32x17mm flange dimension. Ensure the 4.5V rating aligns with the target circuit supply. Check for updated datasheets regarding lead-free status changes.

Selection Notes

Select this component when an internally driven solution is required to simplify driver circuitry. The 4.5V rating suits low-voltage systems. The flange mount facilitates secure installation in enclosures. Verify that the 400Hz frequency meets acoustic requirements for the intended application environment.

Part Context

PUI Audio, Inc. specializes in audio components including buzzers and transducers. The AI-221 belongs to their line of alarms, buzzers, and sirens. It serves as a standard indicator component for industrial and consumer electronics needing reliable audible feedback without complex driving logic.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other internally driven 4.5V electromechanical buzzers if substitution is necessary.