Supply Agreement

Filtronic PLC 20 January 2005 For release 7:00am 20th January 2005 Filtronic plc and RF Micro Devices Inc.: Strategic Supplier Relationship for High Volume Supply of pHEMT GaAs Integrated Circuits from Newton Aycliffe Filtronic plc ('Filtronic'), a leading global designer and manufacturer of customised microwave electronic subsystems and components for the wireless telecommunications and defence industries, and RF Micro Devices, Inc., ('RFMD') a world-leading manufacturer of proprietary radio frequency integrated circuits (RFICs) for wireless communications products, based on RFMD's leading HBT GaAs technology, announce the signing of a supply agreement for the manufacture of high volume pHEMT GaAs products on the Filtronic 6 inch processing facility based in Newton Aycliffe. RFMD will incorporate Filtronic's pHEMT GaAs products into its own modules aimed at mobile handset and WLAN applications. Under the terms of the agreement Filtronic has become RFMD's Tier 1 supplier for GaAs pHEMT technology, where RFMD will use Filtronic as its preferred supplier of pHEMT integrated products for all its requirements. Multi throw GaAs pHEMT switches are required in handsets to enable band/mode switching and these are optimally manufactured using pHEMT GaAs technology. Filtronic and RFMD have been collaborating to develop and qualify a range of multi-throw switch products. Volume production is due to commence Q2 2005 with initial pre-production already underway. Commenting, Professor David Rhodes, Chairman, said: 'The addition of RFMD as customer for the foundry at Newton Aycliffe is a major step in delivering our strategy of merchant and custom semiconductor product sales. Filtronic looks forward to supporting RFMD in their many projects going forward.' Contact details: Filtronic Plc Professor JD Rhodes Tel: 01274 231021 Mob: 07850 827 280 Professor JF Roulston Tel: 01274 231017 Mob: 07800 706 318 Professor CM Snowden Tel: 01274 231452 Mob: 07887 651 822 Binns & Co Plc Peter Binns Tel: 020 7786 9600 Paul McManus Tel: 020 7153 1485 Mob: 07980 541 893 This information is provided by RNS The company news service from the London Stock Exchange