AT-42

Overview

The AT-42 is a top-port speaker manufactured by PUI Audio, Inc. It features a nominal impedance of 32 ohms and a power handling capacity of 100 mW. The device delivers a sound pressure level of 70 dB to 81 dB at 1 kHz measured at 10 cm. It utilizes a 1-inch diameter driver with a compact form factor suitable for space-constrained applications.

Feature Summary

• Top-port acoustic design for directed sound output
• Compact 1-inch driver size for small enclosures
• Low power consumption with 100 mW rating

Applications

• Consumer electronics audio output
• Portable device speakers
• Industrial control panel indicators

Procurement Notes

Verify the specific sensitivity rating (70 dB or 81 dB) as sources vary. Confirm the datasheet version matches your acoustic requirements. Ensure mechanical mounting holes align with your PCB layout. Check RoHS compliance status if required by your region.

Selection Notes

Select this component when a low-profile, top-firing speaker is needed. Compare sensitivity ratings against ambient noise levels. Verify impedance matching with the driving circuit. Consider the 100 mW power limit for continuous operation.

Part Context

This part belongs to PUI Audio's general-purpose speaker lineup. It is designed for cost-sensitive applications requiring reliable audio reproduction. The top-port configuration distinguishes it from bottom-port alternatives in the same series.

Replacement Considerations

Check for direct substitutes with identical 32-ohm impedance and 1-inch diameter. Verify that replacement parts support top-port mounting. Ensure equivalent power handling capabilities are maintained.