Categorization:Harness Component
As electronic devices continue to evolve towards thinness and high speed, the importance of micro high-speed interconnection technology becomes increasingly prominent. The extremely thin coaxial cable (micro coaxial cable) is widely used in medical equipment, mobile terminals, and industrial automation fields due to its excellent high-frequency performance and flexible structure. Connectors, as a key link in the signal transmission chain, directly affect the overall stability of the system.
This article will introduce the core features of the HRS (Hirose Electric) FX15S-51P-0.5SD connector, and analyze how to systematically judge the durability of ultra-thin coaxial cable assemblies.

HRS FX15S-51P-0.5SD Connector Introduction and Application Analysis
HRS FX15S-51P-0.5SD is a multi-purpose connector designed for high-density, high-speed signal applications, featuring a miniaturized design and excellent electrical performance. This model has 51 pins with a pitch of 0.5mm, using SMD packaging, and is suitable for automated surface mounting processes. Its rated voltage is 100 volts, rated current is 500mA, and it can operate stably within a temperature range of -40℃ to 85℃, demonstrating strong environmental adaptability.
The key points for the durability judgment of ultra-fine coaxial cables (micro coaxial cable)
Extremely thin coaxial束 due to its fine structure, needs to be comprehensively judged from three dimensions: material, structure, and reliability in durability evaluation.
① Core wire material and structureHigh-purity copper or copper alloys can provide good conductivity and mechanical strength; a multi-layer shielding structure can effectively enhance anti-interference performance and improve the stability of the harness in high-frequency environments.
Insulating and sheathing materialsHigh-quality cables often use materials such as PE, PTFE, etc., which have excellent dielectric properties, heat resistance, and wear resistance, ensuring that they do not age or degrade in performance over a long period of use.
Bending and tensile resistanceThe extremely thin coaxial cables are often in environments with frequent bending, therefore, strict bending tests must be conducted to verify that they can still maintain stable electrical performance after repeated actions.
Connector配合and fixityWhen matching the harness with the high-precision connector FX15S-51P-0.5SD, it is necessary to ensure the firmness of the locking clip, terminal welding points, and crimping ends to avoid poor contact due to vibration or tension.
⑤ Environmental AdaptabilityMoisture resistance, salt mist resistance, UV resistance, and chemical corrosion resistance are important guarantees for the long-term stable operation of wire harnesses, especially crucial in the medical and industrial fields.
⑥ Electrical performance stabilityAfter bending and temperature cycling, the cable harness still needs to maintain good insertion loss and return loss performance to ensure the integrity of high-speed transmission signals.

I am[Suzhou Huichengyuan Electronic Technology], focus on the research and development and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses. If you have any needs or questions about ultra-fine coaxial cable harnesses, welcome to communicate and discuss. For business inquiries, please contact:Manager Zhang 18913228573 (WeChat same number)。