In modern precision electronic equipment, micro coaxial cable, with its ultra-small size and excellent signal transmission performance, is widely used in internal connection scenarios such as high-end laptops, high-definition cameras, medical instruments, and drone systems. It is not only a "channel" for signal transmission but also a "hidden guardian" ensuring the high-speed and stable operation of the equipment. This article will combine the Hirose DF56L-26P-0.3SD connector to take you on a deep dive into each key component of the internal structure of the micro coaxial cable.

Typical structure of extremely fine coaxial beam
A micro coaxial cable typically consists of three main components:
Inner Conductor
The inner core is the main channel for signal transmission, directly determining the high speed and stability of the signal.
The commonly used materials are silver-plated copper wire or high-purity copper wire to ensure low impedance, excellent conductivity, and effectively reduce signal loss.
Shielding Layer
The shielding layer is a key element in combating external electromagnetic interference (EMI) and preventing signal leakage.
Generally, silver-plated copper woven mesh or aluminum foil shielding structures are used, which can greatly enhance the anti-interference ability of the cable束, ensuring the integrity of the signal during high-frequency and high-speed transmission.
Outer Jacket
The outer sheath provides mechanical and environmental protection for the cable, preventing wear, acid-base corrosion and temperature shock.
Common materials include heat-resistant PVC (polyvinyl chloride) and FEP (fluoroplastic), which combine flexibility and high-temperature resistance, enabling cables to operate stably and long-term under complex working conditions.

Hirose DF56L-26P-0.3SD connector introduction
Among numerous connector brands, Hirose DF56L-26P-0.3SD stands out as a classic representative in the field of ultra-thin coaxial cable sets, thanks to its precise miniaturized design and high reliability performance.
Core Features:
Supports ultra-fine coaxial cable connections with 0.3mm pitch.
26Pin small structure design, easily adaptable to narrow spaces.
③ Excellent vibration resistance and heat resistance ensure long-term stable high-frequency signals.
④ High insertion-extraction life up to thousands of times, stable installation, especially suitable for applications with high requirements for connection stability, such as laptops, camera modules, medical equipment, etc.

The core, shielding layer, and outer sheath of the micro coaxial cable are structurally exquisite, each performing its own function and indispensable. When combined with high-quality cables and excellent connectors (such as Hirose DF56L-26P-0.3SD), they can ensure the stable and unobstructed transmission of signals inside high-frequency, high-speed, and miniature equipment to the greatest extent.
We have been focusing on the design and customization of high-speed cable harnesses and ultra-fine coaxial cable harnesses for a long time, committed to providing stable and reliable high-speed interconnect solutions. If you have any related needs or want to learn more, please contact: Manager Zhang.
18913228573 (WeChat number).