CMEJ-4618-38-L046

Overview

The CMEJ-4618-38-L046 is an omnidirectional electret condenser microphone manufactured by Same Sky. It features a compact cylindrical design with dimensions of 4.6 mm in diameter and 1.8 mm in depth. The component operates on a DC supply voltage of 2.0 VDC with a current rating of 500 uA. It exhibits a sensitivity of -38 dB and an impedance of 2.2 kOhms. The frequency response spans from 100 Hz to 10 kHz. Termination is achieved via wire leads, facilitating direct integration into circuit boards without additional connectors.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture from all directions
• Electret condenser technology providing consistent audio signal output
• Low-profile cylindrical housing suitable for space-constrained electronic assemblies
• Direct wire lead termination for simplified PCB mounting and wiring

Applications

• Consumer electronics audio input modules
• Voice recognition system microphones
• Intercom and communication device arrays
• Portable recording equipment

Procurement Notes

Verify the specific suffix L046 to confirm wire lead configuration and length requirements. Ensure the 2.0 VDC operating voltage aligns with the target circuit design. Confirm RoHS compliance status through official manufacturer documentation prior to final procurement decisions.

Selection Notes

Select this component when an omnidirectional response is required within a minimal footprint. The 2.0 VDC bias requirement distinguishes it from higher voltage alternatives. Wire lead termination is preferred over surface mount options for specific mechanical strain relief needs or existing harness designs.

Part Context

This part belongs to the Same Sky CMEJ series of electret condenser microphones. The series offers various diameters and sensitivity levels. The CMEJ-4618 variant specifically denotes the 4.6 mm diameter form factor. This series is designed for general-purpose audio sensing applications requiring reliable performance.

Replacement Considerations

Cross-reference with other CMEJ-4618 variants if different sensitivity or impedance values are needed. Verify that substitute parts maintain the same 4.6 mm diameter and 1.8 mm depth constraints. Ensure replacement components support the 2.0 VDC operating voltage and wire lead termination style.