ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：MIC COND ANLG OMNI -38DB 0.181"D
- Series：CMEJ
- Mfr：Same Sky (Formerly CUI Devices)
- Package：Bag
- Type：Electret Condenser
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-38dB ±3dB @ 94dB SPL
- S/N Ratio：60dB
- Impedance：-
- Voltage Range：-
- Current - Supply：500 µA
- Port Location：Top
- Ratings：-
- Termination：Wire Leads
- Size / Dimension：0.181" Dia (4.60mm)
- Height (Max)：0.079" (2.00mm)
- Shape：Circular
- Grade：-
- Qualification：-
- Voltage - Rated：2 V
Download product information
Overview
The CMEJ-4618-38-L040 is an omnidirectional electret condenser microphone manufactured by Same Sky. It features a 4.6 mm diameter and 1.8 mm depth, designed for compact audio applications. The component operates at a voltage of 2 VDC with a current rating of 500 uA. It exhibits a sensitivity of -38 dB and an impedance of 2.2 kOhms. The frequency range spans from 100 Hz to 10 kHz, with a typical signal-to-noise ratio of 60 dB. Termination is provided via wire leads.
Feature Summary
- Omnidirectional acoustic design for uniform sound capture
- Electret condenser technology for reliable audio performance
- Low power consumption suitable for battery-operated devices
Applications
- Consumer electronics audio input
- Portable communication devices
- Medical equipment microphones
Procurement Notes
Verify the manufacturer part number CMEJ-4618-38-L040 against official Same Sky documentation to ensure authenticity. Confirm that the specific wire lead length matches project requirements, as variations exist within the series. Check RoHS compliance status through certified datasheets prior to integration into final assemblies.
Selection Notes
Select this component when a low-profile, omnidirectional microphone is required for space-constrained designs. The 2 VDC operating voltage and 500 uA current draw make it suitable for energy-efficient systems. Ensure the 2.2 kOhm impedance aligns with the preamplifier input stage specifications for optimal signal transfer.
Part Context
This microphone belongs to the CMEJ series of electret condenser microphones from Same Sky. The series offers various sensitivity levels and lead lengths to accommodate different acoustic and mechanical design needs. The CMEJ-4618-38-L040 specifically provides a standard sensitivity profile with a 40 mm wire lead option.
Replacement Considerations
Direct substitutes include other models in the CMEJ-4618-38-LX series, such as CMEJ-4618-38-L046 or CMEJ-4618-38-L120, which share identical electrical characteristics but differ in wire lead length. Verify mechanical footprint compatibility before substitution.
