Why is high-purity copper preferred as the central conductor in a micro coaxial cable?

In today's era of rapid digital development, electronic devices have higher requirements for signal transmission quality. Whether it is smart terminals, medical imaging equipment, or high-performance computing scenarios, micro coaxial cable (micro coaxial bundle) undertakes the critical task of high-speed data transmission. To ensure high-speed, stable, and low-loss signal transmission in extremely small spaces, the central conductor material must possess excellent electrical and mechanical properties. High-purity copper, due to its excellent conductivity, reliability, and durability, has become the core choice for micro coaxial cables.

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High conductivity, enhancing signal integrity

Extremely fine coaxial cable bundles have small dimensions and high frequencies, which are extremely demanding on the conductivity of the conductor. If the electrical conductivity of the central conductor material is insufficient, it will lead to increased signal attenuation, affecting the final high-speed data performance. High-purity copper (such as oxygen-free copper) has an extremely high conductivity, allowing the signal to maintain stable and low-loss transmission in micro-sized conductors. In high-frequency applications, high-purity copper can effectively reduce insertion loss, improve signal-to-noise ratio, and ensure signal quality.

 

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High anti-interference capability, maintaining stable transmission quality

The structure of coaxial cables itself is designed to reduce external electromagnetic interference, but if the conductor material has poor conductivity, the internal signal is more susceptible to noise and distortion. High-purity copper can form a more stable electromagnetic field loop with the coaxial shielding structure, making the signal less prone to external crosstalk and interference, thereby enhancing the overall anti-interference performance, ensuring more stable and clear high-speed data transmission.


 

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Flexible and adaptable to complex application scenarios

Extremely thin coaxial cable bundles are usually applied in the internal structures of devices with limited space or frequent bending, such as folding screen phones, hinge mechanisms, medical probes, etc. High-purity copper has good ductility and fatigue resistance, even at extremely small wire diameters, it can maintain softness and is not easy to break. This is particularly important for devices that require continuous bending and durability. Its mechanical properties ensure the reliability of the cable bundle for long-term use.

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Four, strong corrosion resistance, maintains long-term stable performance

In practical applications, equipment may face complex environments such as humidity, dust, or temperature changes. If conductors are easily oxidized, the resistance of the harness will increase, leading to signal attenuation. High-purity copper has good antioxidant properties, allowing conductors to maintain stable conductivity even after long-term use, thus extending the life of the entire harness.

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The best balance between performance and cost

Compared to ordinary copper materials or other metals, high-purity copper is more expensive, but when used in high-performance scenarios such as extremely thin coaxial cables, the investment is necessary and efficient. High-purity copper can effectively reduce signal distortion and repair risks, and from an overall system perspective, it can reduce maintenance costs and improve product quality, making it a more valuable material choice.


High-purity copper serves as the central conductor of micro coaxial cables, offering significant advantages in terms of electrical performance, anti-interference ability, flexibility, corrosion resistance, and cost-effectiveness. It ensures stable and reliable signal transmission for extremely fine coaxial cables in high-speed, high-precision, and space-limited applications. It is an indispensable key material for modern high-speed interconnect design.

I amSuzhou Huichengyuan Electronic Technology Co., Ltd.Long-term focus on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, committed to providing stable and reliable high-speed interconnection solutions. If you have related needs or want to learn more, please contact Manager Yin:18913280527 (WeChat same number)。