With the continuous expansion of high-reliability electronic products in high-vibration environments such as aerospace, rail transportation, new energy, and radar systems, the anti-vibration performance of connectors has increasingly become one of the core evaluation indicators. Especially when facing global renowned射频 connector brands like Amphenol SV Microwave, how to improve the performance of domestic connectors in the anti-vibration field through reasonable testing and process optimization has become a key step in the substitution of domestic products.
Brand Background: Amphenol SV Microwave
Amphenol SV Microwave is one of the high-performance射频 connector manufacturers under the Amphenol group, mainly producing products including:
High-frequency coaxial connectors (SMA, 2.92mm, SMPM, VITA 67, etc.)
●Microwave/millimeter wave connectors (supporting up to 110 GHz)
Custom cable assembly and board-end interface
Its products are widely used in high-vibration and stringent working conditions such as aerospace electronics, radar communication, 5G communication, rail transit, and new energy equipment, and have a significant influence in the global high-end application fields.
Seismic test: Key verification points for domestic substitutes of connectors
In actual engineering projects, in order to achieve the domestic substitution of Amphenol SV Microwave connectors, seismic testing has become an indispensable important link. The following are some experiences we have summarized in the substitution process:
Test standard and working condition settings
●Reference Standard: MIL-STD-202G Method 204D
●Frequency range: 10 Hz–2000 Hz
● Acceleration level: 10 g ~ 20 g (three-axis vibration)
●Test duration: 4 hours per axis, totaling 12 hours
Test equipment: Three-axis vibration table, data acquisition using acceleration sensors and high-speed recorders.
Sample Preparation and Assembly Process
Ensure terminal crimp consistency, adopt laser stripping process to ensure the integrity of the insulation layer
● Welding points use tin silver copper alloy to avoid false welding and welding disconnection due to vibration.
After plugging the connector, use a torque wrench for standard tightening to prevent slight looseness.
Performance monitoring and failure mode recording
● Measure insertion loss, return loss, contact resistance, and other electrical properties before and after vibration
●Use X-ray inspection to check for microcracks and false welding at the connection site
●Data shows that the electrical performance change of high-quality domestic parts is controlled within ±3%, and the difference in contact stability with imported products is gradually narrowing.
High-frequency seismic scheme optimization
In the testing of high-frequency connectors (>26.5GHz), special attention should be paid to domestic connectors:
Interface micro gap structure processing (preventing signal intermittence caused by vibration)
●Central guide pin structure and material reinforcement (increased rigidity)
●Optimized Design of Outer Shell Grounding and Shielding Layer (Enhancing EMI Resistance)
Project Summary: Opportunities and Challenges of Domestic Connectors
Through multi-round seismic simulation tests and on-site feedback analysis, some domestically produced connector products have passed seismic tests at vehicle and military standards, showing certain potential for replacement. We believe:
● Domestic brands have a good foundation in material selection and process control.
●There is still a need for continuous optimization in terms of microseismic durability and batch consistency compared to the original factory products in the high-frequency range.
Cooperation in development and in-depth verification is the key path to promote the realization of the domestic alternative solution.
Amphenol SV Microwave's advantages in shock resistance have established a technical benchmark for international connector products. However, under the accelerated trend of domestic substitution, as long as we continuously make breakthroughs in structural design, welding technology, shock-resistant materials, and testing methods, it is completely possible to achieve the implementation of domestic substitution in specific applications.
If you are interested in the domestic alternative products for this brand connector or have procurement needs, or if you have production or sales channels for the domestic alternatives of this brand connector and wish to engage in in-depth cooperation or communication, please contact us through the following contact information:
Manager Zhang (18665383950, WeChat number same)Contact us, we look forward to working together with more industry partners.
