46
Liquid cooling constraints As rack power densities continue to rise, thermal management becomes a limiting factor in data-center design. With air cooling approaching its practical limits in high-density AI environments, liquid and immersion cooling are increasingly deployed to manage sustained heat loads more effectively. While these approaches im - prove thermal efficiency, they also expand the operating envelope for connectors, introducing new environmen- tal and mechanical constraints that must be addressed at the interface level. In liquid-cooled systems, connectors may be subjected to condensation, dielectric fluids, or cleaning agents during both normal operation and maintenance. These conditions elevate the importance of sealing strategies, corrosion-resistant contact materials, and polymer stability under prolonged thermal and chemical expo- sure. Repeated thermal cycling, driven by fluctuating coolant temperatures, can also affect contact, normal force, and interface resistance over time, increasing the risk of gradual performance degradation rather than abrupt failure. For connector selection and system design, this shifts emphasis beyond nominal electrical ratings towards long-term interface stability and environmental toler- ance. Connectors must accommodate evolving cooling architectures while supporting frequent reconfiguration, higher mating cycles, and accelerated hardware refresh schedules common in AI-driven data centers. In this context, adaptability and lifecycle resilience become as critical as initial performance specifications. Reliability at scale The scale of modern data centers significantly amplifies the impact of minor component failures. A hyperscale facility can contain millions of individual connectors across power, data and control systems, meaning overall reliability depends not on any single interface, but on consistent performance across all of them. As system density increases, small variations in contact resistance, mechanical stability, or installation quality can have disproportionate consequences. Research by the Uptime Institute shows that more than half of impactful data-center outages are caused by on-site power distribution failures, showcasing how electrical issues remain the most common root cause of operational disruption even as data-center systems grow more complex. In high-density, AI-enabled environments, where ther- mal and electrical margins are tighter, a single under-
In hyperscale data centers, where most large-scale AI workloads run, power density has increased to around 36 kW per rack , significantly above traditional enter - prise figures. In AI-optimized facilities, racks are now commonly engineered to deliver 60 kW or more, reflecting the demands of dense GPU clusters and next-generation AI hardware. These escalating power profiles have profound implications for power distribution and the connectors that support it. High-current connectors, busbars, and cable assemblies must operate reliably under sustained electrical load, often in confined spaces with limited airflow. Elevated temperatures accelerate material ageing, increase contact resistance ,and heighten the risk of failure if components are not designed with sufficient margin. Over time, this can contribute to gradual degradation mechanisms such as increased contact resistance and loss of contact normal force, rather than immediate, catastrophic failure. In this context, data centers in- creasingly resemble industrial environments rather than traditional IT spaces.
High-current interconnects such as Amphenol SurLok Plus, designed to support dense power distribution architectures in modern data-center environments. At the same time, operational requirements have become increasingly stringent. Continuous uptime re- mains critical, while maintenance and upgrade activities are often conducted under constrained timeframes. Connectors must, therefore, deliver both electrical performance and mechanical robustness, maintaining stable contact integrity despite handling, vibration, and repeated mating cycles over extended service lives. As a result, the distinction between conventional and ruggedized connectivity is becoming progressively less defined within the modern data-center environment.
Powered by FlippingBook