With the continuous upgrading of high-speed signals, the wiring harness is no longer just a simple connection component, but a key link that directly affects the performance of the system. When designing camera modules, display systems, or high-speed data links, many engineers often need to choose between a very thin micro-coaxial cable and an LVDS line. Both can undertake high-speed transmission tasks, but the underlying structural characteristics and signal performance are completely different.

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1. structure determines performance: the essential difference between the two lines

Very fine coaxial wire harness is the standard coaxial structure. Each core conductor has an independent dielectric layer, metal braided shield and sheath, so each wire is a complete shielding system. This physical structure gives the micro-coax a natural advantage in terms of interference resistance, crosstalk suppression and signal integrity.

In contrast, the heart of LVDS lines lies in "differential transmission". It usually adopts a twisted pair structure, and then cooperates with the overall shielding layer to reduce external interference. Although this design has been widely used in industrial control, display connection and traditional image links, its shielding effect depends on the differential mechanism itself, rather than the independent shielding at the physical level, so it is more likely to expose bottlenecks in extremely high-speed scenarios.

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2. the performance gap in the era of high-speed transmission

As data rates continue to increase, the advantages of very thin coaxial bundles in high bandwidth links are becoming more and more obvious. Thanks to excellent high-frequency performance, the micro-coax can support high-speed interfaces such as MIPI D-PHY, C- PHY, USB3.x, eDP HBR4, etc., and can maintain stable and low-loss performance at 6Gbps or even above 10Gbps.

LVDS is more suitable for medium rate transmission. Under normal circumstances, LVDS works stably in the range of 1 to 2Gbps. When the rate continues to increase, problems such as crosstalk, reflection, and signal attenuation begin to appear. Therefore, in high-resolution images, high bandwidth display, high refresh applications, LVDS has gradually been difficult to meet the demand, which is also the reason why many new platforms are moving from LVDS to micro-coax.

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3. flexibility, wire diameter and assembly: different options for different applications

Another obvious advantage of the extremely thin coaxial harness is its fine structure, light weight and good flexibility. It can easily adapt to the small space inside the module, multiple bends or complex routing, so it is particularly prominent in camera modules, folding equipment, drones, robots and other volume-sensitive products.

Although LVDS has a thicker wire diameter, it is simpler to assemble, mature in the supply chain, and lower in cost. For some medium-speed communication, cost-sensitive and relatively abundant wiring space applications, such as traditional industrial equipment, low-resolution displays, control systems, LVDS is still a very economical and stable choice.

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How to choose 4.? Depends on bandwidth and system requirements

On the whole, if your product is the pursuit of high-speed transmission, strong anti-interference ability, lightweight structure or more stringent signal integrity, then the extremely fine coaxial wiring harness is undoubtedly more appropriate. However, if the application does not require high speed and wants to reduce costs or simplify the assembly process, LVDS is still a mature, reliable and cost-effective solution.

With the continuous improvement of image resolution, screen refresh rate and AI edge computing power, the difference between micro-coax and LVDS is gradually becoming the dividing line of industry choice. For products in the high-speed era, the importance of wiring harness selection is being redefined.

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Whether it is a very fine coaxial harness or LVDS, each wire has its own suitable application scenarios. With the continuous improvement of equipment requirements for bandwidth, image quality, and transmission stability, micro-coax are becoming the mainstream choice for the new generation of high-speed links with stronger signal integrity and higher bandwidth advantages. LVDS still maintains an irreplaceable position in medium-speed, cost-sensitive products.

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Thunderspeed extremely fine coaxial wire harness netBelongableSuzhou Huicheng Yuan Electronic Technology Co., Ltd.，We focus onVery fine coaxial wire harnessThe company is deeply engaged in the field of high-speed transmission, with mature manufacturing technology, strict quality management system and rich industry application experience, products are widely used in consumer electronics, industrial control, medical equipment, intelligent security and other fields. We welcome customers in various industries to contact us at any time.