IN Brief:
- Defence electronics depend on semiconductors across radar, communications, electronic warfare, sensing, power, and platform control.
- Long-lifecycle military systems expose the limits of short commercial component cycles.
- ASIC and trusted microelectronics strategies are becoming more important as defence procurement accelerates.
Swindon Silicon Systems has placed renewed emphasis on semiconductor strategy for defence electronics as military readiness, supply assurance, and long-lifecycle platform support move higher on the industrial agenda.
Modern defence systems depend on semiconductors across radar, electronic warfare, secure communications, sensor interfaces, mission computing, platform control, guidance electronics, and power management. The issue is no longer whether military hardware contains advanced electronics, but whether those electronics can be designed, sourced, qualified, supported, and protected across service lives that often outlast commercial component cycles by decades.
Commercial off-the-shelf devices can bring performance and cost advantages, although defence electronics are rarely served by performance alone. Programmes require traceability, long-term availability, environmental resilience, security assurance, obsolescence planning, and documentation that supports qualification. A device that disappears after a short commercial lifecycle can create a serious sustainment problem once it is embedded in a platform with a 20-year or 30-year service horizon.
Custom silicon and application-specific integrated circuits offer one route through that problem. An ASIC can consolidate functions, reduce board area, improve latency, protect intellectual property, lower power, and give programme teams greater control over lifecycle and configuration. In defence applications, it can also help avoid reliance on components that were not designed for harsh environments, controlled supply, or mission-critical assurance.
The same pressure is visible across adjacent defence technology programmes. BAE Systems’ Endura processor work placed trusted, radiation-hardened microelectronics at the centre of resilient space capability. The £4.6bn GCAP contract sharpened the manufacturing and electronics challenge around sixth-generation combat air, where sensors, software, electronic warfare, datalinks, thermal systems, and mission computing will all shape capability.
The defence semiconductor problem sits across several layers. At the device level, chips must meet performance, power, temperature, radiation, security, and reliability requirements. At board level, packaging, thermal management, connectors, shielding, and test access determine whether those devices can survive real operating conditions. At programme level, supply-chain control, export restrictions, obsolescence, and sustainment determine whether capability can be maintained.
Electronic warfare and radar systems show the problem clearly. They require high-speed signal processing, RF performance, low latency, precise timing, and robust thermal design. Communications systems require encryption, waveform flexibility, secure boot, and anti-tamper measures. Autonomous systems and smart munitions add sensing, edge processing, guidance, actuation, and power conversion into compact packages exposed to vibration, shock, temperature extremes, and hostile electromagnetic environments.
That breadth makes semiconductor planning a strategic issue rather than a component selection task. Defence manufacturers need trusted suppliers, secure design flows, qualification support, and lifecycle commitments before hardware enters production. Late component substitution can be expensive and disruptive, particularly when platform software, certification evidence, safety analysis, and environmental testing are already complete.
NATO procurement pressure adds urgency. Higher defence spending and accelerated readiness goals will increase demand for missiles, drones, aircraft, sensors, communications systems, electronic warfare equipment, and secure command networks. Many of those programmes draw from the same pool of semiconductor design, packaging, test, and manufacturing capacity used by civil aerospace, automotive, telecoms, and AI infrastructure.
The strongest defence electronics strategies will combine performance with control. That means earlier semiconductor involvement in platform design, clearer obsolescence planning, stronger domestic and allied supply routes, and a more realistic view of where custom silicon is justified. COTS will still have a role, but it cannot carry every requirement where assurance, longevity, and security are central.
Defence platforms are becoming electronics-defined systems. The ability to build and sustain trusted semiconductors is now part of military industrial capacity, not an optional layer below the prime contractor.
