Can the domestic substitute for the Amphenol FSI connector pass the high-temperature test?

In the connector industry, the environmental adaptability of products is particularly crucial, especially the performance under high-temperature application scenarios, which often determines whether a connector can be used in complex conditions such as military, rail transportation, wind power, new energy, and communication. As a globally renowned brand in fiber optic connector manufacturing, Amphenol FSI has its products widely used in shipboard systems, radar stations, industrial field communications, and defense communication networks that require extremely high environmental stability. From some technical documents of Amphenol FSI's products, it can be seen that the conventional temperature range of its connector products covers from -55℃ to +125℃, and some models even reach +150℃, and they can work stably under complex conditions such as high temperature, high humidity, and high vibration, with excellent thermal cycle stability and insertion-extraction reliability.

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How do domestic connectors perform in high-temperature tests?
In recent years, with the continuous technological breakthroughs in the domestic connector industry, some domestic brands have also started to benchmark against international high-end brands such as Amphenol FSI, actively strengthening their emphasis on environmental reliability testing.
In practical projects, we have conducted high-temperature aging tests on some domestic alternative models, including:
● After 1000 hours of aging at a constant temperature of 125℃, performance testing is conducted.
● -55℃~+125℃ cold and heat shock cycle 200 times

● Signal Integrity Test Under Hot Load Operation

From the test results, some domestically produced connector products have shown high stability in multi-batch samples. The insulation resistance, voltage strength, and contact resistance remain within the qualified range even at the high-temperature stage, and even approach the performance standards of the original Amphenol FSI. This means that for some industrial-grade application customers who are sensitive to budgets, it has certain feasibility for domestic substitution. Of course, high-temperature testing is just one aspect of evaluating product quality. Other indicators such as corrosion resistance to salt mist, waterproofing level (IP68/IP69K), high-frequency transmission, and insertion/extraction life are also technical thresholds that domestic connectors must gradually improve in the process of fully replacing Amphenol FSI.

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From the current actual test results, domestic connectors are gradually approaching the level of imported products in terms of high-temperature performance, especially in some mid-range industrial scenarios, they can already meet the requirements for stable operation. For customers who pursue cost-performance, shorten delivery time, and reduce the overall project cost, choosing a domestically produced alternative connector that has been verified by high-temperature testing may be a worthwhile direction to consider.
If you are interested in the domestic substitute products of this brand connector, or are looking for a domestic solution for Amphenol FSI connectors, or have procurement needs, production resources, or sales channels for such products, and wish to engage in in-depth cooperation or communication, please feel free to contact us through the following methods:Manager Zhang: 18665383950 (WeChat number the same)We look forward to collaborating with more industry partners to jointly promote the high-quality development of domestically produced connectors.