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A Brief Analysis of JAE FI-RE41CL: Three Misconceptions in Selection and Application of Ultra-Fine Coaxial Cable Assemblies

Categorization:Harness Component       

Specializing in the sales of: Connectors | Wire Harness | Cable Products
In today's era of high-speed data transmission, high-definition display, and widespread use of miniaturized devices, the extremely thin coaxial cable (Micro Coaxial Cable) is being widely used in consumer electronics, medical equipment, and vehicle systems due to its excellent signal performance and flexibility. However, during the selection and matching process of connectors, many engineers and procurement personnel often fall into some "seemingly reasonable" misunderstandings. This article takes the JAE FI-RE41CL connector as an example, and analyzes the three most common problems and professional suggestions in the application of extremely thin coaxial cable bundles.

Misconception One: Believing that all ultra-fine coaxial cables have the same performance
Many people mistakenly believe that as long as it is a micro coaxial cable, its performance and specifications are more or less the same, and can be used arbitrarily.
In fact, ultra-fine coaxial cables are differentiated in terms of outer diameter (usually 0.3 mm ~ 1.37 mm), characteristic impedance (commonly 50 Ω), shielding structure, and conductor material. These parameters directly determine signal integrity and transmission stability.
Professional advice:
When selecting wire materials, it should be matched according to the application scenario, signal frequency, bending performance, and durability requirements, and avoid a "one-size-fits-all" approach.

Misconception two: Neglecting the matching specifications of connectors
At the initial stage of project design, many teams only focus on wire parameters but ignore the compatibility of connectors.
For example, JAE FI-RE41CL is a high-density, fine-pitch (0.5 mm pitch) connector designed specifically for micro coaxial cable, widely used in liquid crystal displays, industrial cameras, and medical imaging equipment. This model supports 41 Pin high-density wiring and has excellent vibration resistance and signal integrity, with strict specifications for wire diameter, welding method, and insertion/removal times. If mismatched cable is used, it is easy to cause signal attenuation, false welding, or even connector damage.
Professional advice:
Select micro coaxial cable materials that are officially certified or recommended by JAE FI-RE41CL to ensure reliable and long-term stability of the connection.

Three, Misconception Three: Underestimating the Importance of Processing Technology
The processing process of extremely fine coaxial cable束 is complex, involving multiple key steps such as stripping, welding, shielding treatment, and jacket fixation.
Any detail mistake may affect the performance of the entire harness. Especially the 41-pin high-density structure of FI-RE41CL, which requires extremely high welding accuracy, and any deviation may lead to short circuits or cold solder joints.
Professional advice:
Please select suppliers with extensive micro coaxial processing experience and those that have passed the official配套工艺 verification by JAE to ensure process quality.

Four, Introduction to JAE FI-RE41CL Connector
Basic Parameters
• Model: FI-RE41CL (Made by Japan Aviation Electronics JAE)
• Series: FI-R series welding plug (Plug, Solder Type)
  Extremum: 41 Pin
• Spacing: 0.5 mm
• Compatible wire diameter: 36 AWG and above ultra-fine miniature coaxial cable
Structure and Characteristics
• 0.5mm pitch welding type connector with snap-in mechanical lock (Shell Cover optional model: FI-RE41CL-SH2-3000)
• Receptacle is universally applicable to the FI-RE41 series, supporting crimp, welding, FFC and other connection methods
Compliant with VESA LCD interface standard, supporting LVDS, TMDS/HDMI, PCIe and other high-speed signal transmission
Application scenarios
Widely used in vehicle image systems, industrial/medical image equipment, laptops, monitors, and high-speed data transmission equipment.

Extremely thin coaxial cables may be small, but they contain many key details. Do not lightly believe the saying that "specifications similar can be used" — only by reasonably matching connectors, selecting materials accurately, and ensuring the quality of processing, such as the high-density connection solution of JAE FI-RE41CL, can the long-term stability and high-performance operation of the project be guaranteed.
We have been focusing on the design and customization of high-speed cable harnesses and ultra-thin coaxial cables for a long time, committed to providing stable and reliable high-speed interconnection solutions. If you have any related needs or want to learn more, please contact: Manager Zhang.18913228573 (WeChat number).