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Weifang Qinyi Electron Science and Technology Co.,Ltd
Weifang Qinyi Electron Science and Technology Co.,Ltd
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Street Address
NO.6 Jinma Road, High-Tech Zone
China (Mainland)/Shandong


China waterproof condenser microphone for radio recorders
China waterproof condenser microphone for radio recorders
FOB Price:
US $0.260 / Piece
1000 Piece/Pieces
Supply Ability:
65000 Piece/Pieces per Day
  • Product Detils
  • Company Profile
Quick Details
Place of Origin:
China (Mainland)
Brand Name:
Model Number:
Packaging & Delivery
Oam and carton board inside, carton box outside. Environmental PE packing material is preventing or inhibiting the buildup of static electricity.
Product Description

                     China waterproof condenser microphone for radio recorders

Electret condenser microphone is a sound- electrical conversion device. The Electronic condenser microphone is used in  telephones, wireless telephones, mobile phones, telephones, PCs, language-learning recorders, radio recorders, cassette recorders, alarms, voice control toys, voice control switches and  so on .


Product Description

  Electret condenser microphone :

1). Diameter of microphone :4.0mm

2). Height of microphone :1.5mm

Technical Parameters.jpg

Specification :


Omni directional


-42±2dB  (0dB=1V/0.1Pa,1KHz)





Max.operation voltage 


Standard operation voltage 


Current consumption


Sensitivity reduction

Within -3dB at 3.0V

S/N Ratio

58dB(Minimum)(A-Curve at 1KHz,Pa)

                                 Dimensional Drawing:                  


Packaging & Shipping




 production .jpg


Our Services

we have special technician team, they are avaible by On-line talk, telephone, email etc . if any question about our microphone, ask them freely. we promise that will help the customer solving the question in 2 working day.

contact information



 Q1. Is it a reliable company?

     Qinyi reply:  Weifang Qinyi Electronic Science and Technology Co.,Ltd is a high technology company which is professional in researching and manufacturing microphones. 
     Our Company has occupied an area of 40 acres and established in the year of 2000,We have got a professional team which possesses strong technical strength and rich practical experiences.

     In recent years,our company has introduced of a series of advanced production equipment.

Q2: What about the delivery?
    reply: we can offer the door to door services by air or by sea, just depend on your actual request. Such as DHL, UPS, TNT, FEDEX… by air; and the sea transportations.

Q3: What’s the delivery time?
    reply: 3 working  days. huge stock.

Q4 :How to choose the microphone?
Directional:  According to the sound receiving range, the microphone is divided into omnidirectional, unidirectional, and noise canceling. The noise canceling microphone is designed to decay the low frequency far. Most customers use omnidirectional microphone; the unidirectional is only used in some special occasions, therefore we should pay more attention to mechanical and circuit design.

Sensitivity: The sensitivity of the microphone affects the recorded volume. However, high sensitivity doesn’t mean a good microphone. The good circuit design is also necessary for getting better results. We suggest selecting a middle common sensitivity at beginning. Too high or too low might affect the lead time and the price.

Test condition: The test voltage and the impedance affect the sensitivity of the microphone. Generally speaking, the higher the voltage and the impedance is the better sensitivity we get. Therefore, the test condition is for reference and IQC only, which is usually different to the reality.

Dimension: Diameter is from 2mm to 14mm, height is from 1.1mm to 6.7mm. 4*1.5, 6*2.2, 6*2.7, 6*5.0, 9.7mm are common spec.


Connecting way: pin, solder pad, SMD. Due to the diaphragm is easily damaged by high temp. during soldering, therefore we suggest finishing the wires and test the microphone again by us to confirm the stability of quality.

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