As electronic products continuously evolve towards thinness and miniaturization, ultra-fine coaxial cables (Micro Coaxial Cable) have become the core transmission solution for high-end consumer electronics, automotive systems, medical equipment, and industrial instruments, thanks to their excellent electrical performance, flexibility, and anti-interference characteristics. In the application of these high-performance cables, the choice of connectors determines the reliability and stability of the overall signal system. This article will delve into the structural features of ultra-fine coaxial cables and discuss their efficient matching with the Hirose DF81D-50P-0.4SD connector.
What is a micro coaxial cable (Micro Coaxial Cable)?
Extremely thin coaxial cables refer to high-density coaxial structure cables with outer diameters usually less than 1.0mm, whose typical structure is composed of the following parts:
Center Conductor (Signal Core): Responsible for signal transmission, it is the core part of the entire structure.
Insulating layer (Dielectric): Provides electrical isolation and maintains impedance consistency.
Metal shielding layer (Shield): Usually woven or made of metal foil, effectively suppressing electromagnetic interference.
• Jacket layer: Provides mechanical protection and flexibility.
Due to its ultra-fine wire diameter and excellent electromagnetic compatibility performance, extremely thin coaxial cables are widely used in applications that require extremely high signal integrity, such as high-definition camera modules, tablet computers, notebook motherboards, and vehicle-mounted camera systems.
Hirose DF81D-50P-0.4SD: A high-performance connection solution designed for ultra-thin coaxial cables
Hirose DF81D-50P-0.4SD is a 0.4mm pitch board-to-board connector designed specifically for high-speed signal transmission and miniaturization, capable of perfectly matching multiple micro coaxial cable bundles. Its main advantages include:
High-density design: 50-pin pin layout, supporting multi-channel high-speed data transmission.
Miniaturized packaging: 0.4mm pitch spacing, effectively saving PCB space.
High-speed performance support: Satisfies high-speed applications such as USB 3.0, 4K video transmission;
Reliable locking mechanism structure: Enhance vibration resistance and pull-out performance, ensuring stable connection.
Compatible with various wire gauges: fits AWG 40/42/44/46 and other micro coaxial cables with different wire diameters.
This design makes the DF81D series a standard component in the internal connection solutions of many high-end electronic devices.
Application Case: Perfect Coordination of Ultra-Fine Coaxial Beam + DF81D
Extremely fine coaxial cables excel in high-precision applications due to their excellent signal integrity and flexible routing capabilities. Combined with the Hirose DF81D-50P-0.4SD connector, their transmission stability and structural reliability are further enhanced, and they are widely used in the following fields:
Notebook camera module connection line
Vehicle-mounted visual system high-speed transmission cable
• Internal connection of medical image processing equipment
High-end tablet motherboard and FPC precision connection
With its high density, high speed, and high reliability, this combined solution is gradually becoming a standardized trend for internal connections in high-end electronic products.
Extremely fine coaxial cables are driving the development of electronic products towards higher integration with their excellent transmission performance and lightweight structure. Hirose DF81D-50P-0.4SD, as a high-performance connector specially designed for micro coaxial cables, is an important support for achieving this goal. The combination of the two provides a more stable, high-speed, and compact internal connection solution for high-end equipment.
I am Kunshan JieKangFu Precision Electronics, focusing on the design and customization of high-speed signal cables and ultra-thin coaxial cables for a long time, committed to providing stable and reliable high-speed interconnect solutions to our customers. If you have any related needs or want to learn more, please contact: Manager Yin.
18913280527 (WeChat number). 
