In the era of continuous evolution in intelligent terminals, miniaturized medical equipment, and high-speed transmission interfaces, cable products are also facing more stringent performance challenges. Especially in applications with limited space and high requirements for signal integrity, ultra-fine coaxial cables (Micro Coaxial Cable) have become the preferred choice for internal connections in an increasing number of high-end electronic devices due to their extremely small diameter and excellent performance. But how does a 48AWG ultra-fine coaxial cable achieve both high flexibility and high signal integrity while being as thin as a hair?
What is a 48AWG ultra-fine coaxial cable?
AWG (American Wire Gauge) is the American standard for wire gauge, where a higher number indicates a finer wire diameter. The diameter of 48AWG wire is only about 0.03mm, even finer than a hair strand. Such ultra-fine coaxial cables are typically composed of the following parts:
Inner conductor (central conductor)
Insulation layer
Shielding layer (woven or foil structure)
External sheath
This typical coaxial structure can still effectively isolate external electromagnetic interference (EMI) at extremely small diameters, ensuring stable transmission of high-speed signals.
The flexibility of 48AWG ultra-fine coaxial wire
To cope with complex wiring environments such as smart wearable devices, medical endoscopes, and camera module assemblies, the 48AWG ultra-fine coaxial cable has been optimized in terms of material and process design:
Super-fine multi-strand braided conductor structure
Compared with a single conductor, the use of a multi-strand extremely fine conductor braiding method significantly improves flexibility and bend resistance life.
High elasticity, low dielectric constant insulating material
Select high-performance engineering plastics such as FEP, PFA, and LCP, which have both softness, high-temperature resistance, and can reduce signal attenuation.
Ultra-fine high-density woven shielding layer
Achieve high-density weaving using materials such as silver-plated copper wire, balancing anti-interference performance and overall flexibility.
Environmental-friendly elastic sleeve design
TPU or flexible PVC sheath, abrasion-resistant and bend-resistant, suitable for repeated wiring in limited spaces.
How to ensure signal integrity?
In high-speed data transmission, signal integrity is a key indicator of cable quality. The 48AWG ultra-fine coaxial cable, through multi-layer design, achieves low signal loss and high stability:
Coaxial structure is inherently anti-interference
A concentric ring conductor and shielding layout effectively suppresses crosstalk and external electromagnetic interference.
Precision Impedance Control
Common designs are 50Ω or 75Ω, with controlled conductor diameter, insulation thickness, and material dielectric constant to reduce reflection and attenuation.
Low-loss insulation material
Low dielectric loss characteristics can effectively reduce high-frequency signal attenuation and extend transmission distance.
Multi-screening scheme
A multi-layer shielding structure with high-density weaving, aluminum foil layer, and silver-plated copper wire ensures signal purity and stability in complex electromagnetic environments.
The 48AWG ultra-fine coaxial cable can achieve high flexibility and high signal integrity in extreme spaces, which is inseparable from the synergistic effect of multi-strand fine conductors, high-performance insulating materials, and high-density shielding technology. With the continuous development of ultra-micro display devices, surgical robots, and minimally invasive medical systems, ultra-fine coaxial cables will become the key basic components for internal connections in future high-end electronic products.
I am Kunshan JieKangFu Precision Electronics, a company that has long been committed to the design and customization of high-speed signal cable harnesses and extremely thin coaxial cable harnesses, and is dedicated to providing customers with stable and reliable high-speed interconnection solutions. If you have any related needs or would like to learn more, please feel free to contact: Manager Yin.
18913280527 (WeChat number)。
