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Sapphire microphone pad
The sapphire pad in microphone products belongs to high-precision components and is widely used in various scenarios due to its unique material properties. Specifically, sapphire material has the following characteristics that are highly suitable for the needs of high-end gasket products:

1、 Ultra high hardness

Sapphire (alumina single crystal) has a Mohs hardness of 9, second only to diamond, and has excellent wear resistance, which can maintain a smooth surface for a long time.

2、 Good chemical stability

Sapphire material has good corrosion resistance, acid and alkali resistance, and is suitable for harsh environments such as high humidity and corrosive gases.

3、 Strong thermal stability
Sapphire material has a low coefficient of thermal expansion and small deformation under temperature changes, making it suitable for high-precision equipment.

4、 Good transparency

Some sapphire pads may be used for optical microphone components (such as laser vibration measurement systems).

Sapphire in various application scenarios of microphones


Diaphragm support/sealing gasket:Used for high-end condenser microphones to reduce vibration interference and improve sound purity.

Precision structural components:As a wear-resistant isolation or positioning component in micro MEMS microphones.

Special environment microphone:Sealing or protection of microphones in extreme environments such as industry, aerospace, etc.

frequently asked questions


Q: Is the sapphire pad used for consumer grade microphones?
A: Commonly seen in high-end professional equipment or special industrial applications, consumer grade products are adopted due to their lower cost.

Q: How to determine if a sapphire gasket is needed?
A: If the microphone needs to work in high temperature, high wear or ultra precision environments, it can be considered for use.


In addition to the above review, the use of sapphire pads can ensure the performance of microphones. Specifically, there are these advantages:

1. Extend the lifespan of the microphone and reduce performance degradation caused by wear and tear;

2. Improve the stability of microphone signals and reduce mechanical noise;

3. Suitable for miniaturization design (high hardness allows for thinner designs).




Product consultation hotline:19924616008
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