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PCB Blog - The advantages of polyimide PCBs

PCB Blog

PCB Blog - The advantages of polyimide PCBs

The advantages of polyimide PCBs

2024-03-28
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Author:iPCB

Polyimide is a high-performance polymer composed of imide monomers. Polyimide is naturally present and can also be synthesized and manufactured.


Polyimide PCB.jpg



Polyimide has good heat resistance, electrical resistance, and high mechanical strength, and can be applied to PCBs, especially soft boards. 

Some features of polyimide PCBs make them suitable for critical mission applications, such as aerospace and defense.


The advantages of polyimide PCBs

1. Durability: Due to its high resistance to physical stress, polyimide PCBs are extremely durable. Even in extremely harsh environments, they can maintain their shape.


2. Heat resistance: Polyimide PCBs can withstand a wide temperature range, supporting working temperatures up to 260 ℃. 

Another advantage is that they can resist any thermal damage during production or maintenance processes.


3. Flexibility: They have extremely high flexibility and are suitable for both rigid and flexible printed circuit boards.

4. Chemical resistance: The chemical stability of polyimides is also well-known, and if they are exposed to corrosive substances, they will not exhibit any adverse effects. 

Polyimide performs the best in applications where PCBs may be exposed to chemicals.


5. Tensile strength: Polyimide printed circuit boards are known for their tensile strength, which can withstand high loads without breaking. 

Furthermore, in terms of warping, polyimide PCBs have elasticity. Therefore, they are widely used in applications that require physical strength and durability.


The uses of polyimide PCBs

Polyimide PCBs are widely used in various industrial fields, including but not limited to:

1. Application in the medical industry: flexible and flexible interconnection of magnetic resonance imaging equipment, ultrasound equipment, and sensitive equipment

2. Industrial equipment: power inverters, motor controllers

3. Automotive Industry: Engine Management Systems, Anti lock Braking Systems, ADAS Vehicle Systems

4. Telecommunications equipment: telephone exchange system, mobile signal tower

5. Military applications and aerospace industry: power distribution systems, communication and defense navigation systems, electronic flight instrument systems, 

digital signal and microwave processing systems.


Polyimide is a high-temperature and high-strength material with excellent electrical and mechanical properties. 

It is composed of polyimide esters and has a high dielectric constant, thermal impedance, and coefficient of thermal expansion. 

Polyimide also has excellent heat resistance and chemical corrosion resistance, making it suitable for high temperature, high humidity, and strong acid-base environments.