How high a temperature can ultra-fine coaxial cables withstand? In-depth analysis of micro coaxial cable thermal standards

In precision electronic equipment, medical imaging systems, in-car imaging, and portable terminals, micro coaxial cable, with its ultra-small diameter, high-speed transmission capability, and excellent anti-interference performance, has become the mainstream solution for high-definition signal transmission. However, in actual applications, the high-temperature resistance often determines whether the cable can operate stably in complex environments for a long time. So, what is the high-temperature resistance standard for micro coaxial cable assemblies? And how should one select the correct type?

I. Common temperature resistance standards for ultra-fine coaxial cable束
According to different industry standards and application environments, the temperature rating of micro coaxial cable is mainly divided into the following categories:
• Standard wire material: -20℃ ~ +85℃
• High temperature wire material: -20℃ ~ +105℃
Special customized wire material: -40℃ ~ +125℃ or higher
In situations that require strict temperature stability, such as in vehicle electronics, industrial automation, and medical imaging, high-temperature and customized wiring harnesses are more common.
This kind of cable harness can maintain signal integrity in high-temperature environments, preventing signal attenuation, medium aging, or degradation of shielding performance due to temperature rise, thus ensuring the long-term reliable operation of the system.

Hirose DF56L-26P-0.3SD: the ideal connection solution under high-temperature environments

In the application of extremely thin coaxial cables, the choice of connectors is also crucial.
The **DF56L-26P-0.3SD** series from Hirose, Japan, is a high-density PCB-to-line connector designed specifically for micro coaxial cables, widely used in laptop computers, in-car control displays, medical imaging equipment, industrial terminals, and other fields.
Main characteristics include:
1. 0.3mm Pitch Micro Pitch Design, supporting extremely fine coaxial cables;
2. 26Pin high-density structure, achieving high bandwidth transmission in a compact space.
The temperature resistance reaches +85°C, meeting the requirements of most high-definition signal environments.
Metal locking mechanism, vibration and detachment resistant, ensuring long-term stable connection.
Meets RoHS environmental standard, balancing performance and environmental protection.
The DF56L series performs excellently in high-resolution display modules, FPC, and coaxial interconnections, effectively ensuring the integrity and anti-interference capability of high-speed signals.

The importance of high-temperature resistance and connector matching
The temperature resistance standards for extremely thin coaxial cable束 can be roughly divided into three levels: 85℃, 105℃, and 125℃.
In practical design, in addition to focusing on the temperature resistance of the wire material itself, the following factors should also be considered:
Whether the heat resistance level at the connector end matches;
Does the welding and assembly process adapt to high-temperature conditions?
• Is the whole machine heat management sufficient.
If the cable and connector have a mismatch in temperature resistance, it may lead to degradation of the contact interface, deformation of the insulation layer, and even cause signal distortion and system failure.
Hirose DF56L-26P-0.3SD paired with high-temperature type micro coaxial cable can significantly improve the reliability and transmission stability of the whole machine in high-temperature environments.
This combination can not only meet the integrity requirements of high-speed differential signals, but also maintain the long-term stability of the system under continuous high-temperature operation.

The high-temperature grade of ultra-fine coaxial cable束 is usually divided into three levels: 85℃, 105℃, and 125℃. When selecting, it should be considered in combination with the operating environment and the heat resistance of the connector. Choosing high-quality connectors such as **Hirose DF56L-26P-0.3SD**, and配合professional custom high-temperature micro coaxial cables, can provide higher signal stability and anti-interference protection for equipment.

I am[Suzhou Huichengyuan Electronic Technology]Long-term focus on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, committed to providing stable and reliable high-speed interconnection solutions. If you have related needs or want to learn more, please contact:Manager Yin 18913280527 (WeChat same number)。