With the increasing use of power LEDís in many new lighting applications TT electronics Welwyn Components has developed an aluminium-based substrate technology which provides the optimum solution for thermal performance, yielding increased life expectancy
With the increasing use of power LED's in many new lighting applications TT electronics Welwyn Components has developed an aluminium-based substrate technology which provides the optimum solution for thermal performance, yielding increased life expectancy and improved luminous densities for surface mount power LED's. Welwyn and sister stateside company IRC, specifically developed the robust technology, branded Anotherm, to resolve the issue of thermal power dissipation, which was preventing designers moving forward with high intensity LED devices. Anotherm is also seen as an ideal substrate solution for many applications where high component densities make semiconductor heat dissipation a major design challenge. These include interior / exterior train and aircraft lighting, traffic and street signage and emergency vehicle lighting. Anotherm is an intensified aluminium substrate technology, which, by utilising silk-screen printing, allows circuitry to be directly assembled onto the heatsink. Overall construction negates the use of thermal grease, which stands as a major thermal barrier, and also cuts out additional manufacturing process steps. Due to the varied nature of LED housing and associated environments, specific options are available on both irregular shaped substrates and extruded heatsinks. Integration of the LED drive electronics is achievable with the in-house capability to lay crossover tracks down to 150 in track width. Anotherm is also solder and conductive epoxy compatible. Where direct chip attach and wire bond of LED's is required, Welwyn offers a complete range of alternative substrate solutions including ceramic, insulated metal, steel, and FR4. In conjunction to providing substrates solutions, Welwyn offer circuit design services and full SMT assembly capabilities. TT electronics / Welwyn Components Ltd, Bedlington, Northumberland NE22 7AA, UK.