The rapid expansion of Low Earth Orbit (LEO) satellite constellations is transforming how space systems are designed, manufactured, and deployed. Unlike traditional satellite missions that prioritized maximum longevity and zero-failure operation, modern New Space programs focus on scalability, rapid deployment, cost efficiency, and continuous technology refresh cycles. This shift requires engineering teams to rethink component selection strategies, balancing radiation resilience, performance, manufacturability, and supply chain stability.
This white paper from Arrow explores how hybrid electronic architectures that combine radiation-hardened (RAD-hard), radiation-tolerant (RAD-tolerant), and Commercial Off-The-Shelf (COTS) components enable scalable LEO constellations. Rather than relying exclusively on highly specialized space-grade electronics, today’s satellite platforms increasingly achieve reliability through resilient system architectures and constellation-level redundancy.
Instead of treating component reliability as the only measure of mission success, the guide explains how modern engineering teams build resilient architectures that tolerate localized failures while maintaining continuous service across large satellite networks.
You will learn:
• How New Space is changing satellite design philosophies for LEO constellations
• The differences between RAD-hard, RAD-tolerant, and COTS components
• Why hybrid component architectures improve scalability and deployment speed
• How system-level resilience replaces traditional zero-failure design approaches
• Key engineering trade-offs involving performance, reliability, SWaP-C, and cost
• How onboard processing, RF systems, memory, and power architectures influence component selection
• Why supply chain resilience and lifecycle planning are critical for constellation deployment
• How modular architectures support manufacturing scalability and future upgrades
• Best practices for balancing survivability, performance, manufacturability, and long-term sustainability
The white paper explains why traditional satellite engineering models are evolving. Large LEO constellations supporting broadband communications, Earth observation, and distributed sensing require shorter development cycles, higher production volumes, and continuous hardware upgrades. As reusable launch systems reduce deployment costs, engineering priorities shift from maximizing component longevity to optimizing architecture-level resilience and scalability.
A major focus of the guide is the transition from component-level reliability to system-level resilience. Instead of attempting to eliminate every possible hardware failure, modern LEO architectures incorporate distributed processing, fault isolation, redundancy, workload redistribution, and constellation-wide operational redundancy. These techniques enable satellite networks to continue functioning even when individual components experience radiation effects or degradation.
The white paper also examines the engineering challenges associated with selecting RAD-hard, RAD-tolerant, and COTS technologies. While RAD-hard components provide maximum radiation resistance, COTS devices deliver higher processing performance, faster innovation cycles, and lower costs. Successful New Space missions increasingly rely on hybrid architectures that combine these technologies while mitigating risks through system-level design techniques such as redundancy, error correction, and fault isolation.
Another key takeaway is the importance of integrated architecture planning. Component choices directly affect thermal management, power efficiency, payload performance, manufacturability, and long-term supply chain stability. The guide demonstrates how modular subsystem design, standardized interfaces, and lifecycle planning enable scalable satellite production while reducing deployment risks across growing LEO constellations.
This white paper is intended for aerospace system architects, satellite design engineers, electronics engineers, embedded systems developers, FPGA and ASIC designers, program managers, semiconductor specialists, and organizations developing next-generation LEO satellite constellations.
Download RAD vs. COTS: Component Selection Strategies for Scalable LEO Constellations from Arrow to learn how hybrid component strategies, resilient system architectures, and intelligent engineering decisions can accelerate New Space development while balancing cost, performance, reliability, and scalability.
