The UK defence electronics sector has reached a significant milestone in sovereign capability following the successful completion of a development project by Filtronic, a specialist in radio frequency and mmWave technology.
Supported by the Defence Technology Exploitation Programme (DTEP) through UK Defence Innovation, Filtronic has developed high-power plastic packaging for Gallium Nitride (GaN) semiconductors, addressing a critical engineering challenge in the miniaturisation of advanced defence systems. The project, which commenced in 2022 and concluded in August 2025, provides a domestic alternative to traditional, bulky ceramic packaging, offering substantial improvements in size, weight, and power efficiency for radar and electronic warfare applications.
The technological breakthrough centres on a new type of Quad Flat No-lead packaging designed to house GaN semiconductors. While GaN is essential for high-efficiency power systems, its traditional reliance on ceramic housing has historically limited its integration into modern platforms where space and weight are at a premium. Filtronic’s plastic-packaged solution demonstrated exceptional reliability during rigorous testing, with over 150 units subjected to extreme thermal, moisture, and electrical stress. Every device achieved a 100% pass rate in electrical performance tests, validating the technology for deployment in air, sea, and space environments.
The commercial impact of this innovation has been transformative for Filtronic and the wider UK supply chain. Since the project’s inception, the company has tripled its revenue and doubled its workforce. This growth supported the opening of a new manufacturing facility in the North East of England in 2025, specifically designed to accommodate increased production demands for bespoke design and manufacturing services. Furthermore, the project’s success has enabled Filtronic to secure follow-on funding through UKRI to explore advanced thermal management techniques, ensuring the UK remains at the forefront of semiconductor innovation.
For businesses within the defence supply chain, Filtronic’s journey highlights the strategic value of the DTEP framework, which facilitates collaboration between SMEs and major defence prime contractors. The involvement of a major UK prime contractor was instrumental in shaping the technical requirements and securing board-level investment for Filtronic’s new packaging line. This model of targeted innovation funding not only advances critical defence technologies but also strengthens the industrial base by fostering high-growth companies capable of supporting national security objectives. With current partnerships extending to major airborne and naval platforms, as well as the commercial space sector, Filtronic’s progress exemplifies the potential for UK-based suppliers to scale operations and secure significant market share through evidence-based technical excellence.
Image: MOD/Filtronic
Photo By Nick Georgiou Photography (www.nickgeorgiouphotography.co.uk)
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Post written by: Vicky Maggiani
Vicky has worked in media for over 25 years and has a wealth of experience in editing and creating copy for a variety of sectors.
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