Würth Elektronik

Würth Elektronik eiSos is the electronic and electromechanical component business within the Würth Elektronik group, headquartered in Waldenburg, Germany. The eiSos company took its current legal form in 2002, while Würth Elektronik's electronics activities trace back to 1971. The business has become one of Europe's most recognisable component suppliers, with direct sales coverage and production facilities serving global markets.

Its catalogue is unusually broad for a manufacturer that remains strongly associated with passive components. Product families include EMC components, power and signal magnetics, capacitors, resistors, quartz crystals and oscillators, RF components, power modules, digital isolators, sensors, radio modules, LEDs and optoelectronics, connectors, switches, REDCUBE terminals and thermal-management products.

For engineers, Würth Elektronik eiSos stands out because the component catalogue is paired closely with design-in support. The company provides sample services, application notes, reference designs, component libraries and tools such as REDEXPERT and the Product Navigator, which can make it particularly useful during power-supply, EMC and interface design where component behaviour depends heavily on frequency, current and layout.