| Company name | Category |  | 
              
                | L-3 Communications Cincinnati Electronics | Wireless communications |  | 
              
                | LA Techniques | Stand-alone instruments |  | 
              
                | Labfacility | Plugs and sockets |  | 
              
                | Labtech Microwave | Boards and backplanes |  | 
              
                | Laird Technologies | Gaskets, seals and screens |  | 
              
                | Lambda Photometrics | Sensors and data acquisition |  | 
              
                | Lamerholm Electronics | Electronics manufacturing materials |  | 
              
                | Lanner Electronics | Embedded computing and control |  | 
              
                | Lantronix | Networking hardware |  | 
              
                | Lapistor | Memory devices and modules |  | 
              
                | Laplace Instruments | Test accessories |  | 
              
                | Lapp | Cables and wires |  | 
              
                | Lascar Electronics | Sensors and data acquisition |  | 
              
                | Laselec | Lasers |  | 
              
                | Laser Components | Lasers |  | 
              
                | Laserbit Communications | Optoelectronics |  | 
              
                | Laserex Technologies | Optoelectronics |  | 
              
                | Lattice Semiconductor | Programmable logic devices |  | 
              
                | Lattix | Design and development software |  | 
              
                | Lauterbach | Design and development hardware |  | 
              
                | Lava Computer | Networking hardware |  | 
              
                | Lawtronics | Batteries and chargers |  | 
              
                | LCR Electronics | Boards and backplanes |  | 
              
                | LDRA | Design and development software |  | 
              
                | Lead Free Magazine Consortium | Industry news |  | 
              
                | Leading Light Technologies | Communications ICs (wired) |  | 
              
                | Leading-Tech Laser | Lasers |  | 
              
                | Lecroy | Stand-alone instruments |  | 
              
                | Lectronix | Design and development software |  | 
              
                | LED Dynamics | Optoelectronics |  | 
              
                | Lee-Dickens | Sensors and data acquisition |  | 
              
                | Leeds Lithium Power | Batteries and chargers |  | 
              
                | Legend Silicon | Communications ICs (wired) |  | 
              
                | Legic Identsystems | Wireless communications |  | 
              
                | Leicester Circuits | Boards and backplanes |  | 
              
                | LEM | Sensors and data acquisition |  | 
              
                | LEM Instruments | Stand-alone instruments |  | 
              
                | Lemo | Plugs and sockets |  | 
              
                | Lenslet | Microprocessors, microcontrollers and DSPs |  | 
              
                | Leonardo Computer Systems | Design and development software |  | 
              
                | LG International | Electronics manufacturing materials |  | 
              
                | Liantec Systems | Embedded computing and control |  | 
              
                | Light Blue Optics | Optoelectronics |  | 
              
                | Light-Based Technologies | Light-emitting diodes (LEDs) |  | 
              
                | Lightconnect | Optical filters, lenses, gratings |  | 
              
                | Lightscape Networks | Networking hardware |  | 
              
                | Lightstorm Networks | Communications ICs (wired) |  | 
              
                | Lime Microsystems | Reference designs |  | 
              
                | Lincoln Binns | Floor-standing racks, cabinets, enclosures |  | 
              
                | Lineage Power | DC/DC convertors |  | 
              
                | Linear Integrated Systems | Analogue and mixed-signal ICs |  | 
              
                | Link Hamson | Electronics manufacturing materials |  | 
              
                | Link Microtek | Antennas and feeders |  | 
              
                | Link Up Systems | Communications ICs (wired) |  | 
              
                | Linmot | Electromechanical components |  | 
              
                | Lion Precision | Stand-alone instruments |  | 
              
                | Liquavista | Industry news |  | 
              
                | Lista | PCB assembly equipment, tools |  | 
              
                | Lite Point | Stand-alone instruments |  | 
              
                | Littelfuse | Circuit protection devices |  | 
              
                | Live Devices | Embedded software and operating systems |  | 
              
                | Live Electronics | Switches and keyboards |  | 
              
                | Livingston | Stand-alone instruments |  | 
              
                | Liyitec | Industry news |  | 
              
                | Lloyd Instruments | Stand-alone instruments |  | 
              
                | Loadpoint | Electronics manufacturing, packaging |  | 
              
                | Logic Devices | Memory devices and modules |  | 
              
                | Logic Electronic Components | Frequency control components |  | 
              
                | Logic Procurement | Electronics manufacturing services |  | 
              
                | Logic Technology | Design and development software |  | 
              
                | Logic Vision | ATE systems |  | 
              
                | Logis Tech Associates | Exhibitions, courses, conferences, training |  | 
              
                | London Metropolitan University | Exhibitions, courses, conferences, training |  | 
              
                | London Remade | Recruitment, reports, resources |  | 
              
                | Lord | Electronics manufacturing materials |  | 
              
                | Lorlin Electronics | Switches and keyboards |  | 
              
                | Los Alamos National Laboratory | Recruitment, reports, resources |  | 
              
                | Low Power Radio Solutions | Wireless communications |  | 
              
                | LPRA | Exhibitions, courses, conferences, training |  | 
              
                | LS Cable | Cables and wires |  | 
              
                | LS Electronic Solutions | Electronics manufacturing services |  | 
              
                | LS Laser Systems | IC and hybrid processing equipment |  | 
              
                | LSI | Intellectual property cores |  | 
              
                | LTW Technology | Plugs and sockets |  | 
              
                | Lucid Port Technology | Communications ICs (wireless) |  | 
              
                | Lumberg | Plugs and sockets |  | 
              
                | Luminary Micro | Microprocessors, microcontrollers and DSPs |  | 
              
                | Luminescent Technologies | Electronics manufacturing materials |  | 
              
                | Luna Innovations | Optoelectronics |  | 
              
                | Luna Technologies | Stand-alone instruments |  | 
              
                | Luxo Vega | Electronics manufacturing, packaging |  | 
              
                | Lynux Works | Embedded software and operating systems |  | 
              
                | Lyrtech | Design and development hardware |  |