AS02504AR

Overview

The AS02504AR is a general-purpose electromagnetic speaker manufactured by PUI Audio, Inc. It features a round shape with a diameter of 25 mm and a depth of 9.4 mm. The unit has an impedance of 4 Ohms and a power rating of 3 W. Its frequency range extends from 320 Hz to 20 kHz, with a self-resonant frequency of 320 Hz. The speaker utilizes a neodymium magnet (NdFeB) and an aluminum cone. It achieves a sound pressure level of 81 dBA at 1W/500mm.

Feature Summary

• Designed for robust low-frequency response in compact designs
• Utilizes neodymium iron boron magnetic material for efficient performance
• Features an aluminum cone for durability and acoustic clarity
• Supports board mount installation via solder pads

Applications

• Appliances requiring audible feedback
• Industrial control panels
• Security and fire alarm systems
• Consumer electronics devices

Procurement Notes

Verify the specific datasheet version when ordering, as component specifications may vary between revisions. Confirm that the 4-ohm impedance and 3-watt power rating align with your circuit design requirements. Ensure mechanical clearance allows for the 25 mm diameter and 9.4 mm height dimensions. Check for RoHS compliance status if required by your manufacturing standards. Validate that the solder pad termination type matches your PCB layout.

Selection Notes

Select this component when a compact form factor is critical but low-frequency output is still required. The 4-ohm impedance suits standard audio driver circuits. The aluminum cone offers a different acoustic profile compared to Mylar alternatives. Consider the 81 dBA efficiency for applications where moderate volume is sufficient without excessive power consumption. The round shape facilitates standard mounting hole patterns.

Part Context

This part belongs to the AS series of speakers from PUI Audio, Inc., a manufacturer specializing in audio components since 1973. The company provides standard and custom audio solutions for medical, industrial, and consumer markets. The AS series typically includes various sizes and impedances to suit different enclosure constraints and acoustic needs.

Replacement Considerations

Direct substitutes must match the 4-ohm impedance, 25 mm diameter, and similar resonant frequency. Verify cone material compatibility if acoustic characteristics are critical. Ensure the replacement supports the same 3-watt power handling capability.