In medical equipment, intelligent terminals, and high-definition image devices, etc., extremely fine coaxial cable束 (micro coaxial cable) is widely used due to its slender appearance, excellent signal integrity, and good flexibility. Although small in size, the voltage issues they endure during use have always been a focus for engineers. This article will analyze aspects such as rated voltage, withstand voltage testing, special models, and connectors to provide reference for practical design.
Common rated voltages
Most extremely thin coaxial cable bundles have a rated voltage of about 30V. This is mainly because the cable insulation layer is very thin and the spacing between conductors is limited; if the voltage is too high, it is prone to breakdown. The rated value of 30V can both ensure the safety of signal transmission and meet the needs of daily electronic equipment, and is a commonly used standard in the industry.
Pressure Resistance Test
In the production and quality inspection process, manufacturers usually conduct voltage withstand tests on cables that exceed the rated values to ensure that the products have safe redundancy in a short period of time. Common tests include AC withstand voltage up to 100V and DC withstand voltage up to 200V. However, these tests are only used to verify short-term safety, and actual use should still follow the rated 30V. Otherwise, long-term high voltage may accelerate insulation aging, affecting the cable's lifespan and safety.
Section 3: Special Model High Voltage Capacity
Some manufacturers have launched extremely thin coaxial cables made of special materials (such as PTFE, FEP fluoroplastic), with rated voltages that can be higher than 30V, even reaching hundreds of volts. These products are mostly used for industrial or high-voltage environment customization and do not belong to standard miniature coaxial cables. When selecting, it is necessary to carefully distinguish between standard signal lines and high-voltage customized lines to avoid misuse.
Four, Connector Voltage Limit
In addition to the cable itself, the rated voltage of the connector is also important. The rated voltage of common micro coaxial connectors is generally 30V, with some models reaching 100V. Overall, the voltage resistance level of the connector is consistent with that of the cable, mainly used for signal transmission applications with low voltage and low power consumption.
In general, the common rated voltage for extremely thin coaxial cables is 30V, with higher voltage withstand test values to ensure safety margin. There are special high-voltage models available, but they are not suitable for general applications due to material and manufacturing dependence. When designing and selecting, the rated value should be taken as a standard to provide stable and reliable signal transmission for the system.
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