I-PEX 20847-030T-01: High-performance micro-coax impedance control full analysis

Under the background of continuous advancement in high-speed transmission and device thinning, micro coaxial cable (micro coaxial cable) has become the mainstream internal interconnection solution for precision electronic systems such as laptops, tablets, wearable devices, etc. I-PEX's CABLINE®-VS II series stands out among many connectors with its stable impedance control, high-speed performance, and perfect shielding structure. Among them, the 20847-030T-01, as a high-performance model with a 0.5 mm pitch and a locking structure, is widely used in high-speed signal chains such as eDP, USB, and Thunderbolt.

This article will analyze from three perspectives: product features, key factors of impedance control, and advantages in high-speed applications.

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I-PEX CABLINE®-VS II 20847-030T-01 product features

CABLINE®-VS II 20847-030T-01 supports high-speed transmission capabilities up to 32 Gbps/lane, suitable for internal connection scenarios with high bandwidth and high anti-interference requirements. It employs a full-shield structure and ZenShield multi-point grounding technology to suppress EMI from the source, ensuring signal link stability. The mechanical locking design enhances the reliability of mating, effectively avoiding poor contact caused by vibration or displacement. Its PFAS-Free and Halogen-Free environmental certifications give this model an advantage in environmentally controlled notebook and consumer electronics projects.

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Two, the key factors affecting the characteristic impedance of micro-coax

Extremely thin coaxial cables require precise control throughout the entire process from material to structure and assembly to achieve a stable 50 Ω impedance. The size of the cable's central conductor, dielectric constant of the insulation, and accuracy of the shielding layer directly determine the basic impedance performance. The 0.5 mm spacing pin layout at the connector end allows for continuous matching of the signal path, reducing the risk of reflection and mismatch. ZenShield's 360° shielding design ensures that the signal path is always in a stable electromagnetic environment. During assembly, the bending radius must be greater than 6 times the wire diameter to avoid impedance changes caused by excessive bending. At the same time, automated welding and inspection equipment can ensure batch consistency and long-term reliability.

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Section 3: Application Scenarios and Signal Integrity Advantages

In high-speed protocols such as eDP, MIPI, USB, PCIe, signal integrity is crucial for transmission stability. High-density devices have limited internal space and complex interference sources, thus requiring connectors to have high shielding capability, impedance continuity, and low loss characteristics. The CABLINE®-VS II 20847-030T-01, combined with precision micro-coax cable assemblies, can significantly reduce crosstalk, reflection, and jitter, reduce error rates, and ensure the eye diagram quality of high-speed links. For product designs that pursue high frequency and low noise, such high-performance miniature coaxial solutions are an important foundation for achieving reliable high-speed transmission.

I-PEX CABLINE®-VS II 20847-030T-01 stands out as a high-end connector for micro-coax applications due to its comprehensive features such as high speed, full shielding, precise impedance matching, and environmental certification. Through reasonable selection, strict processing, and precise assembly, it can achieve stable impedance control and ensure the integrity of high-speed signal chains, making it an optimal solution for internal connections in various high-bandwidth electronic devices.

I amSuzhou Huichengyuan Electronic Technology Co., Ltd.Long-term focus on the design and customization of high-speed cable harnesses and ultra-fine coaxial cables, committed to providing stable and reliable high-speed interconnect solutions. For inquiries or technical support, please contact Manager Yin:18913280527 (WeChat number)。