# MODEL: CMEJ-0733-42-L050 - Electret Condenser Microphone

## Features

· Omnidirectional
· 7 mm diameter
· 50 mm lead wires
· RoHS compliant

## Electrical Characteristics

· Sensitivity: -45 to -39 dB (at 1 kHz)
· Supply Voltage: 1.0 to 2.0 V (up to 10 V max)
· Current Consumption: 0.5 mA (at 2.0 V, 2.2 kΩ load)
· Frequency Response: 100 to 20,000 Hz
· Signal-to-Noise Ratio: 60 dBA (at 1 kHz)
· Total Harmonic Distortion: 1% (at 94 dB SPL, 1 kHz) / 3% (at 115 dB SPL, 1 kHz)
· Acoustic Overload Point: 115 dB SPL
· Output Impedance: 2.2 kΩ

## Environmental Conditions

· Operating Temperature: -40 to 70°C
· Storage Temperature: -40 to 85°C
· Operating Humidity: 30 to 85% (non-condensing)
· Storage Humidity: 30 to 75% (non-condensing)
· Hand Soldering Temperature: 340 - 360 °C (for 1-3 seconds)

## Mechanical Specifications

· Dimensions: 7.0 mm x 3.3 mm
· Weight: 0.32 g
· Acoustic Port: Top
· Terminals: Wire Leads
· Wire: UL 1571, 32 AWG
· Tolerance: ±0.2 mm

## Wiring

· Red Wire: Output (+)
· Black Wire: GND (-)

## Packaging

· Carton Quantity: 6,000 pieces

## Warranty

· 1-year limited warranty. See website for details.

## Contact Information

· Headquarters: 20050 SW 112th Ave., Tualatin, OR 97062
· Phone: 800.275.4899
· Fax: 503.612.2383
· Website: cui.com
· Tech Support: techsupport@cui.com