EA-21843-C36

Microphones Overview

The Knowles EA-21843-C36 is an omnidirectional electret condenser microphone with dimensions of 5.56 mm x 3.98 mm x 2.21 mm. It operates at a supply voltage of 1.3 VDC and draws a current rating of 50 uA. The device features a sensitivity of -59 dBA and an impedance of 3.5 kOhms. It utilizes a screw termination style and includes a 3S port configuration.

Microphones Feature Summary

• Omnidirectional acoustic response for uniform sound capture
• Improved RFI/EMI suppression capabilities
• Screen damped internal structure

Microphones Applications

• Portable audio recording devices
• Voice recognition systems
• Consumer electronics audio input modules

Microphones Procurement Notes

Verify the specific suffix C36 against official Knowles documentation to confirm the exact sensitivity and port configuration. Ensure compatibility with existing PCB layouts regarding the screw termination style and physical footprint dimensions. Cross-reference the operating voltage requirements with the target system power supply.

Microphones Selection Notes

Select this component when a compact, omnidirectional microphone with improved electromagnetic interference rejection is required. The low operating voltage and current consumption make it suitable for battery-powered applications. Verify that the screw termination method aligns with the assembly process and mechanical constraints of the final product design.

Microphones Part Context

This model belongs to the Knowles TO/BTO series of omni-directional microphones. These components are characterized by their small size and enhanced radio frequency interference suppression. The series offers various damping responses, including undamped, screen damped, and internally damped options to suit different acoustic environments.

Microphones Replacement Considerations

Consult official Knowles substitution guides for verified equivalents. Generic replacements may not match the specific sensitivity or EMI suppression characteristics.