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. Particularly 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 in such a slender size as that of a hair strand?
What is a 48AWG ultra-fine coaxial cable?
AWG (American Wire Gauge) is the American standard for wire gauge, with a larger number indicating a finer wire diameter. The diameter of 48AWG wire is only about 0.03mm, even finer than a hair strand. This ultra-fine coaxial cable is typically composed of the following parts:
Inner conductor (central conductor)
Insulation layer
Shielding layer (woven or foil structure)
Outer 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 cable
To cope with complex wiring environments such as smart wearable devices, medical endoscopes, and camera module modules, the 48AWG ultra-fine coaxial cable has been optimized in terms of material and process design:
Ultra-fine multi-strand braided conductor structure
Compared with a single conductor, using a multi-strand ultra-fine conductor braiding method significantly improves flexibility and bending fatigue life.
High elasticity, low dielectric constant insulating material
Selecting high-performance engineering plastics such as FEP, PFA, and LCP, they possess both flexibility and high-temperature resistance, and can also reduce signal attenuation.
Super-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
With TPU or flexible PVC sheath, wear-resistant and bend-resistant, suitable for repeated wiring in confined spaces.
How to ensure signal integrity?
In high-speed data transmission, signal integrity is a key measure of cable quality. The 48AWG ultra-fine coaxial cable achieves low signal loss and high stability through multi-level design:
Coaxial structure naturally resists interference
A concentric ring-shaped conductor and shielding arrangement effectively suppresses crosstalk and external electromagnetic interference.
Precision Impedance Control
Common designs are 50Ω or 75Ω, and reflection and attenuation are reduced by strictly controlling the conductor diameter, insulation thickness, and material dielectric constant.
Low-loss insulation material
Low dielectric loss characteristics can effectively reduce high-frequency signal attenuation and extend transmission distance.
Multiple shielding solutions
A high-density woven + aluminum foil layer + silver-plated copper wire multi-layer shielding structure 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 processes. With the continuous development of ultra-micro display devices, surgical robots, and minimally invasive medical systems, ultra-fine coaxial cables will become a key foundation for internal connections in future high-end electronic products.
I am Kunshan Jie Kang Fu Precision Electronic, focusing on the design and customization of high-speed signal cables and ultra-fine coaxial cables for a long time, committed to providing stable and reliable high-speed interconnect solutions to customers. If you have related needs or want to learn more, please contact: Manager Zhang.
18913228573 (WeChat number).
