♥ Electret microphones have the characteristics of small size, simple structure, good electroacoustic performance and low price, and are widely used in cassette recorders, wireless microphones, voice control and other circuits. Belongs to commonly used condenser microphones.

♥ Since the input and output impedances are very high, a Field-effect transistor should be installed inside the microphone shell as an impedance converter. For this reason, Electret condenser microphones need DC working voltage when working.

 

 

Size: 9 * 7MM

Sensitivity: -48~66DB

Frequency response range: 50-20KHZ

Directional characteristic: omnidirectional

Impedance: low impedance

Current consumption: maximum 500UA

Standard working voltage: 3V

Working voltage range: 1.5-10V

Signal to noise ratio: greater than 58DB

Sensitivity change: voltage change of 1.5V, sensitivity change less than 3DB

 

 

Size: 6 * 5MM

Sensitivity: -48~66DB

Frequency response range: 50-20KHZ

Directional characteristic: omnidirectional

Impedance: low impedance

Current consumption: maximum 500UA

Standard working voltage: 3V

Working voltage range: 1.5-10V

Signal to noise ratio: greater than 58DB

Sensitivity change: voltage change of 1.5V, sensitivity change less than 3DB

 

 

Size: 6 * 2.2MM

Sensitivity: -48~66DB

Frequency response range: 50-20KHZ

Directional characteristic: omnidirectional

Impedance: low impedance

Current consumption: maximum 500UA

Standard working voltage: 3V

Working voltage range: 1.5-10V

Signal to noise ratio: greater than 58DB

Sensitivity change: voltage change of 1.5V, sensitivity change less than 3DB

 

 

Size: 4.5 * 2.2MM

Sensitivity: -38~3DB

Directional characteristic: omnidirectional

Impedance: limited to 2.2K Ω

Current consumption: limited to 0.5MA

Working voltage range: 1.0~10V

Small signal-to-noise ratio limit: 40DB

 

 

Size: 9.7 * 4.5MM

Sensitivity: -53DB

Offset voltage characteristic: -3DB

Current consumption: 0.5MA (limited/large)

Working voltage limit: 0.5MA

Signal to noise ratio: 4.5V

 

 

Size: 4 * 1.5MM With Wire

Working voltage range: 1.0-10V

Impedance: 2.2KR

Current consumption: 0.5MA (maximum)

Directionality: omnidirectional

Signal to noise ratio: 40DB

Storage temperature: -22 ° C~+70 ° C

Relative humidity: 35%~85% RH

 

 

 

 

 

 

Size: 4 * 1.5MM

Sensitivity: -53DB

Impedance: 2.2K Ω

Current consumption: 500MA

Signal to noise ratio: 58DB

Offset voltage characteristic: -3DB