I-PEX 20473-030T-10 High-Speed Micro Coaxial Connector and Ultra-Fine Coaxial Cable Assembly Application Analysis

As electronic devices continue to trend towards high-speed, thin, and high integration, the internal signal interconnection system has put higher requirements on the performance of cables and connectors. Micro coaxial cable, with its high bandwidth, low loss, and excellent anti-interference ability, has become an important transmission medium for high-definition display modules, camera modules, medical imaging equipment, vehicle-mounted displays, and automated terminals. I-PEX 20473-030T-10, as one of the mainstream high-speed micro-coaxial connection solutions, is widely used in various high-end devices due to its high bandwidth, small spacing, and mature structural design.
The following will give a systematic introduction from two aspects: connector characteristics and signal integrity design of ultra-fine coaxial cable assemblies.


 

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I-PEX 20473-030T-10 connector introduction

I-PEX 20473-030T-10 belongs to the I-PEX CABLINE®-CBL series, a miniature coaxial plug housing product designed for high-speed data transmission, especially suitable for terminating extremely thin coaxial cable bundles.

Its main characteristics include:

Product series

CABLINE-CBL Micro Coaxial Series, suitable for plug housing termination method for micro coaxial cable.

2. Contact spacing and structure

Using a 0.4 mm contact spacing, it supports horizontal mating, and can achieve high-density interconnection within a limited space.

Data Rate Performance

Single-channel support reaches up to 20 Gbps/lane, partially meeting the high-speed interface requirements of eDP, USB3.1, V-By-One, MIPI, etc.

4, pin count

Provide the 30 pin version (20473-030T-10), and there are also other models available with 40 pins.

5. Cable and Impedance Characteristics

Compatible with 40/42/44/46 AWG ultra-fine coaxial cable束，typical impedance of about 45Ω, suitable for various high-speed differential signal systems.

With its high bandwidth capability, multi-point grounding shielding, and reliable structural design, this model is widely adopted in consumer electronics, industrial control, in-car central control, and medical equipment fields.

 

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Section 2: Key Points for Signal Integrity Control of Ultra-Fine Coaxial Beam

In order to achieve stable transmission in high-speed applications, extremely fine coaxial cable bundles require strict control of signal integrity (Signal Integrity). The following are the main design key points:

Impedance control

The coaxial bundle must maintain consistent impedance (commonly 45Ω / 50Ω), any discontinuity will cause signal reflection, resulting in waveform distortion and degradation of the eye diagram.

2, differential pair routing

High-speed signals are usually transmitted in differential mode, which reduces noise coupling by using paired wiring to improve the anti-interference capability.

3. Screen structure optimization

A high-density shielding layer can effectively suppress EMI and improve signal purity, which is an indispensable structural requirement for high-speed harnesses.

4. Signal Loss Management

The higher the frequency, the more obvious the attenuation of the cable bundle. Engineers need to reasonably select the wire diameter, shielding method, and cable length according to the application bandwidth.

5. Soldering Technique

Welded terminations are a weak link in the entire signal chain, poor processing can lead to increased contact resistance or the formation of impedance突变, therefore, termination accuracy is crucial.

 

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Three, comprehensive performance and application value of micro coaxial cable

Extremely thin coaxial cable bundles, due to their characteristics of low loss, strong shielding, and high flexibility, are very suitable for high-speed signal transmission in miniaturized equipment. Combined with mature connectors such as I-PEX 20473-030T-10, performance improvements can be achieved in the following aspects:

Ensure the signal quality of high-speed interfaces such as eDP, USB3.1, V-By-One, MIPI, etc.

Bending and layout for limit space structures

3. Meet the anti-interference and reliability requirements under automotive and medical environments.

By scientific impedance design, shielding optimization, and precise termination technology, the overall signal integrity and service life of the machine can be significantly improved.

I-PEX 20473-030T-10 is a commonly used micro coaxial connection solution in high-speed, miniaturized equipment. When paired with micro coaxial cable, it can achieve a signal chain with high bandwidth, low noise, and high reliability. Through reasonable impedance control, differential distribution line, shielding design, and process optimization, the extremely thin coaxial cable can provide stable electrical performance in high-frequency complex environments. For applications that pursue extreme space layout and high-speed transmission capabilities, this combination scheme has significant advantages.

I amSuzhou Huichengyuan Electronic Technology, Long-term focus on the design and customization of high-speed signal cables and extremely thin coaxial cables, committed to providing stable and reliable high-speed interconnect solutions. If you have relevant needs or wish to consult on cable solutions, please feel free to contact:Manager Yin 18913280527 (WeChat same number)。