ED-21983-000

Speakers Overview

The Knowles ED-21983-000 is a balanced armature receiver speaker designed for audio applications. It features a rectangular shape with top porting and solder pad termination style. The component operates within a frequency range of 200 Hz to 5 kHz. Key electrical parameters include an impedance of 725 Ohms and a sound pressure level of 104 dBA. The maximum seated height is 6.3 mm (0.248 inches). This device is classified as a receiver type transducer suitable for board mount integration.

Speakers Feature Summary

• Balanced armature technology for efficient audio reproduction
• Top port design for directed sound output
• Solder pad termination for surface mount assembly

Speakers Applications

• Portable electronic devices requiring compact audio receivers
• Communication equipment utilizing balanced armature speakers
• Audio systems integrating rectangular form factor transducers

Speakers Procurement Notes

Verify the specific datasheet version from Knowles to confirm current product status and exact mechanical dimensions. Ensure compatibility with existing PCB footprints regarding the 6.3 mm height constraint. Confirm that the 725 Ohm impedance matches the driving circuit requirements. Check for any recent manufacturing updates or packaging changes that may affect assembly processes.

Speakers Selection Notes

Select this component when a high-impedance balanced armature receiver is required. The 725 Ohm impedance distinguishes it from standard low-impedance alternatives. Consider the 200 Hz to 5 kHz frequency response for voice-centric applications. The rectangular shape and top port orientation are critical for enclosure design constraints.

Speakers Part Context

This part belongs to the Knowles Speakers & Transducers category, specifically within the Balanced Armature Receiver segment. It is distinct from general-purpose speakers due to its specialized acoustic design and high impedance characteristics. The component serves as a direct replacement for similar rectangular balanced armature units in legacy designs.

Speakers Replacement Considerations

Direct substitutes must match the 725 Ohm impedance and rectangular form factor. Verify that alternative parts support the same 200 Hz to 5 kHz frequency range. Ensure the replacement maintains the top port configuration and 6.3 mm maximum height for mechanical fit.