CMEJ-0706-42-P

Overview

The CMEJ-0706-42-P is an omnidirectional electret condenser microphone manufactured by Same Sky. It features a 7 mm diameter housing with a depth of approximately 2.7 mm and utilizes solder pin termination for PCB mounting. The device operates at a DC voltage of 2 Vdc with a current rating of 500 uA. Key electrical specifications include a nominal impedance of 2.2 kohms and a sensitivity of -42 dB ±3 dB referenced to 94 dB SPL at 1 kHz. The frequency response range extends from 100 Hz to 10 kHz, supporting standard audio capture applications.

Feature Summary

• Omnidirectional acoustic design for uniform sound pickup from all directions
• Electret condenser transducer technology for reliable analog signal output
• Solder pin termination style facilitating direct printed circuit board integration

Applications

• Consumer electronic audio input devices
• Portable communication equipment
• General purpose sound detection circuits

Procurement Notes

Verify the manufacturer designation as Same Sky, formerly known as CUI Devices, to ensure accurate sourcing and documentation alignment. Confirm that the specific suffix P denotes the solder pin termination variant distinct from wire lead options within the series. Cross-reference the Mouser part number 490-cmej-0706-42-p for supply chain tracking. Ensure compliance with RoHS directives if required by the target assembly standards. Validate the operating voltage requirements against the system power budget before final procurement.

Selection Notes

Select this component when a compact 7 mm form factor is required for space-constrained designs. The 2 Vdc operating voltage suits low-power battery-driven systems compared to higher voltage alternatives. The -42 dB sensitivity provides adequate gain for many consumer audio interfaces without excessive amplification needs. Consider the solder pin termination if surface mount or through-hole wave soldering processes are utilized in the manufacturing workflow.

Part Context

This microphone belongs to the CMEJ series of electret condenser microphones produced by Same Sky. The series offers various diameters and termination styles to accommodate different mechanical and electrical design constraints. The CMEJ-0706-42-P specifically addresses applications requiring a balance between size, sensitivity, and standard PCB mounting compatibility.

Replacement Considerations

Direct substitutes may include other 7 mm omnidirectional electret microphones with similar -42 dB sensitivity and 2 Vdc operation. Verify mechanical footprint compatibility, particularly the pin spacing and hole dimensions for solder pins. Electrical parameters such as impedance and current consumption must match to ensure circuit stability.