RAI-33651-000

Speakers Overview

The Knowles RAI-33651-000 is a receiver transducer belonging to the MM20 series. It is designed for audio signal reproduction in compact electronic devices. The component features a bottom port configuration and operates within a temperature range of -17°C to +63°C. Key electrical specifications include a sensitivity of -55 dB, a signal-to-noise ratio (SNR) of 70.5 dBA, an impedance of 5.1 kΩ, and a operating supply current of 38 µA at 900 mV. The physical dimensions are 3.35 mm in length, 2.5 mm in width, and 1.3 mm in depth.

Speakers Feature Summary

• Integrated MEMS microphone technology adapted for receiver applications
• Compact form factor suitable for space-constrained mobile designs
• High signal-to-noise ratio for clear audio reproduction

Speakers Applications

• Mobile phone handsets
• Smart wearable devices
• Voice-controlled IoT modules

Speakers Procurement Notes

Verify the specific datasheet version when sourcing, as manufacturer revisions may update mechanical tolerances or electrical parameters. Confirm that the bottom port orientation matches your PCB layout requirements. Ensure compatibility with the target device's acoustic chamber design to maintain specified SNR performance. Cross-reference ordering suffixes if alternative packaging is required.

Speakers Selection Notes

Select this component when high fidelity audio output is required in ultra-thin enclosures. The low power consumption makes it suitable for battery-operated devices. Consider the 5.1 kΩ impedance when designing the amplifier interface circuitry. The narrow operating temperature range should be evaluated against the environmental conditions of the final product deployment.

Speakers Part Context

This part is part of the Knowles MM20 series, which focuses on miniaturized acoustic components. The series utilizes MEMS fabrication techniques to achieve consistent performance across units. It serves as a direct replacement for legacy receivers in modern smartphone and tablet architectures where size reduction is critical.

Speakers Replacement Considerations

Check for pin-compatible alternatives within the same MM20 family if supply constraints exist. Verify that substitute parts maintain the same 70.5 dBA SNR and -55 dB sensitivity levels to ensure no degradation in audio quality.