MR-23333-000

Speakers Overview

The Knowles MR-23333-000 is a subminiature balanced armature receiver speaker designed for compact audio applications. It features a top port configuration with a round shape and an impedance of 21 Ohms. The device operates within a frequency range of 300 Hz to 3.5 kHz, with a self-resonant frequency at 300 Hz. It delivers a sound pressure level of 117 dB and has a diameter of 12.7 mm.

Speakers Feature Summary

• Balanced armature transducer technology for high-fidelity audio reproduction in small form factors
• Top port design allowing for flexible acoustic integration in constrained spaces
• Non-magnetic construction suitable for sensitive electronic environments

Speakers Applications

• Hearing aids and assistive listening devices
• Medical diagnostic equipment requiring precise audio feedback
• Compact consumer electronics with space constraints

Speakers Procurement Notes

Verify the specific datasheet version for the MR-23333-000 to confirm RoHS compliance status and exact acoustic tolerances. Ensure that the application environment does not exceed the maximum operating temperature limits specified by Knowles. Cross-reference the pinout and mounting dimensions with the mechanical drawing before finalizing PCB layout or enclosure design to prevent integration errors.

Speakers Selection Notes

Select this component when a high-output, low-profile speaker is required for hearing aid or medical device applications. The 21 Ohm impedance matches standard driver circuits, while the 117 dB sensitivity ensures adequate volume in small enclosures. Consider the top port orientation for acoustic path planning and verify compatibility with existing housing designs due to the 12.7 mm diameter constraint.

Speakers Part Context

This part belongs to Knowles' subminiature speaker portfolio, specifically engineered for hearing aid and medical markets. It utilizes balanced armature technology to deliver clear audio in extremely limited spaces. The series is known for reliability and consistent performance in critical audio applications where size and weight are primary constraints.

Speakers Replacement Considerations

Consult official Knowles documentation for direct cross-references. Verify impedance, sensitivity, and physical dimensions against potential substitutes to ensure acoustic and mechanical compatibility without redesigning the host device.