| Company name | Category |  | 
              
                | Daat Research | Design and development software |  | 
              
                | Daikin Chemical | Electronics manufacturing, packaging |  | 
              
                | Daintree Networks | Sensors and data acquisition |  | 
              
                | Dalanco Spry | PC-compatible boards, assemblies |  | 
              
                | Daleba Electronics | Boards and backplanes |  | 
              
                | Damage Control Products | Electronics manufacturing materials |  | 
              
                | Dane-Elec | Memory devices and modules |  | 
              
                | Danielson | Switches and keyboards |  | 
              
                | Darnell | Exhibitions, courses, conferences, training |  | 
              
                | Data Cabinets | Floor-standing racks, cabinets, enclosures |  | 
              
                | Data Hunter | Wireless communications |  | 
              
                | Data I/O | Design and development hardware |  | 
              
                | Data Modular Products | Embedded computing and control |  | 
              
                | Data Translation | Sensors and data acquisition |  | 
              
                | Datacon Semiconductor Equipment | Electronics manufacturing, packaging |  | 
              
                | Dataflex Design Communications | Networking hardware |  | 
              
                | Datalight | Embedded software and operating systems |  | 
              
                | Datalink Electronics | Electronics manufacturing services |  | 
              
                | Datalis Solutions | Electronics manufacturing services |  | 
              
                | Datapaq | Electronics manufacturing quality assurance |  | 
              
                | Dataquest Solutions | Sensors and data acquisition |  | 
              
                | Dataserv | Compliance engineering |  | 
              
                | Datasoft Systems | Wireless communications |  | 
              
                | Datasound Laboratories | Embedded computing and control |  | 
              
                | Datatronic Distribution | EMC components |  | 
              
                | Datatronics Romoland | Transformers and inductors |  | 
              
                | Datel | DC/DC convertors |  | 
              
                | Datum | Design and development software |  | 
              
                | Datum Alloys | Electronics manufacturing, packaging |  | 
              
                | Datum Timing, Test and Measurement | Stand-alone instruments |  | 
              
                | Datwyler | Cables and wires |  | 
              
                | Dawar Technologies | Touchscreens and touch sensors |  | 
              
                | Dayford Designs | Electronics manufacturing, packaging |  | 
              
                | DBM Optics | Stand-alone instruments |  | 
              
                | DCM Technologies | Design and development software |  | 
              
                | DCT Digital Communication Technologies | Microprocessors, microcontrollers and DSPs |  | 
              
                | DDC | Sensors and data acquisition |  | 
              
                | DDE-EDA | Design and development software |  | 
              
                | DDP | Optoelectronics |  | 
              
                | De Montfort University | Exhibitions, courses, conferences, training |  | 
              
                | Debens | Electronics manufacturing materials |  | 
              
                | DED | Printers, knobs, bezels, other panelware |  | 
              
                | Deeter Electronics | Wireless communications |  | 
              
                | Defacto Technologies | Design and development software |  | 
              
                | DEK | PCB assembly equipment, tools |  | 
              
                | Delta Energy Systems | DC/DC convertors |  | 
              
                | Delta Microelectronics | Microprocessors, microcontrollers and DSPs |  | 
              
                | Delta-Direct | Power supplies |  | 
              
                | Deltacast | PC-compatible boards, assemblies |  | 
              
                | Demos On Demand | Recruitment, reports, resources |  | 
              
                | Denali Software | Intellectual property cores |  | 
              
                | Dengrove | DC/DC convertors |  | 
              
                | Denso | Analogue and mixed-signal ICs |  | 
              
                | Deposition Sciences | Optical filters, lenses, gratings |  | 
              
                | Design Advance | Design and development software |  | 
              
                | Design Automation Conference | Exhibitions, courses, conferences, training |  | 
              
                | Design Chain Associates | Exhibitions, courses, conferences, training |  | 
              
                | Design Edge | Design services |  | 
              
                | Design LED Products | Light-emitting diodes (LEDs) |  | 
              
                | Design of Systems on Silicon | Communications ICs (wired) |  | 
              
                | Design Workshop Technologies | Design and development software |  | 
              
                | Deutsch | Plugs and sockets |  | 
              
                | Devlin Electronics | Switches and keyboards |  | 
              
                | Dewetron | Sensors and data acquisition |  | 
              
                | Dexdyne | PC-compatible boards, assemblies |  | 
              
                | Dexter Magnetic Technologies | Capacitors |  | 
              
                | DFA Media | Exhibitions, courses, conferences, training |  | 
              
                | DFI | Embedded computing and control |  | 
              
                | DfR Solutions | Design services |  | 
              
                | DGE | Embedded computing and control |  | 
              
                | DHL Environmental Compliance Solutions | Compliance engineering |  | 
              
                | Diagnostic Instruments | Sensors and data acquisition |  | 
              
                | Diagnosys | Electronics manufacturing quality assurance |  | 
              
                | Dialight Lumidrives | Light-emitting diodes (LEDs) |  | 
              
                | Dialog Semiconductor | Power-supply ICs and controllers |  | 
              
                | Diamond Electronics | LCD modules |  | 
              
                | Diamond Point | Frequency control components |  | 
              
                | Diamond Systems | Embedded computing and control |  | 
              
                | Dibcom | Communications ICs (wired) |  | 
              
                | Dichtomatik | Electronics manufacturing materials |  | 
              
                | Dicoll | Industry news |  | 
              
                | Digi | Networking hardware |  | 
              
                | Digi-Box | Stand-alone instruments |  | 
              
                | Digi-Key | Wireless communications |  | 
              
                | Digital Airways | Embedded software and operating systems |  | 
              
                | Digital Inspection Systems | Sensors and data acquisition |  | 
              
                | Digital Power | Power supplies |  | 
              
                | Digital TV Labs | Compliance engineering |  | 
              
                | Digital View | PC-compatible boards, assemblies |  | 
              
                | Dilithium Networks | Embedded software and operating systems |  | 
              
                | Dima SMT Systems | PCB assembly equipment, tools |  | 
              
                | Dimension Engineering | DC/DC convertors |  | 
              
                | Dimensions Consulting | Heatsinks and thermal management |  | 
              
                | Diodes Incorporated | Power-supply ICs and controllers |  | 
              
                | Dionics | Electronics manufacturing services |  | 
              
                | Direct Insight | Design and development hardware |  | 
              
                | Direct Logix | Design and development software |  | 
              
                | Disco Hi-Tec | Electronics manufacturing, packaging |  | 
              
                | Discretix Technologies | Microprocessors, microcontrollers and DSPs |  | 
              
                | Display Link | Communications ICs (wired) |  | 
              
                | Display Solutions | Embedded computing and control |  | 
              
                | Display Technology | LCD modules |  | 
              
                | DK Thermal Solutions | Heatsinks and thermal management |  | 
              
                | DK-Technologies | Stand-alone instruments |  | 
              
                | DM Optics | Stand-alone instruments |  | 
              
                | DMASS | Recruitment, reports, resources |  | 
              
                | DMS Technologies | Batteries and chargers |  | 
              
                | Dolch Computer Systems | Floor-standing racks, cabinets, enclosures |  | 
              
                | Domain Technologies | Design and development hardware |  | 
              
                | Dontech | Heatsinks and thermal management |  | 
              
                | Dow Corning | Electronics manufacturing materials |  | 
              
                | Downstream Technologies | Design and development software |  | 
              
                | DP Seals | Floor-standing racks, cabinets, enclosures |  | 
              
                | Dpict Imaging | Sensors and data acquisition |  | 
              
                | Dragonwave | Wireless communications |  | 
              
                | DS2 | Microprocessors, microcontrollers and DSPs |  | 
              
                | DSL Forum | Recruitment, reports, resources |  | 
              
                | DSM Computer | Embedded computing and control |  | 
              
                | DSM Somos | Electronics manufacturing materials |  | 
              
                | DSP | Communications ICs (wireless) |  | 
              
                | DSP Design | Embedded computing and control |  | 
              
                | DTI Global Watch Service | Recruitment, reports, resources |  | 
              
                | DTI Innovation | Industry news |  | 
              
                | Dubai Silicon Oasis | Recruitment, reports, resources |  | 
              
                | Dubilier | Batteries and chargers |  | 
              
                | DV Con | Exhibitions, courses, conferences, training |  | 
              
                | DV3 Displays | Industry news |  | 
              
                | DXO Labs | Optical filters, lenses, gratings |  | 
              
                | Dy 4 Systems | VMEbus boards, assemblies |  | 
              
                | Dycon | AC/DC power supplies |  | 
              
                | Dymax | Electronics manufacturing, packaging |  | 
              
                | Dynalab Test Systems | ATE systems |  | 
              
                | Dynamic Engineering | PC-compatible boards, assemblies |  | 
              
                | Dynamic Telecommunications | Stand-alone instruments |  | 
              
                | Dynamix Technology | Recruitment, reports, resources |  | 
              
                | Dynex Semiconductor | Discrete power devices |  |