LED family offers greater design freedom for automotive lighting

April 21, 2015 // By Paul Buckley
Aiming to open up new design options, especially for car headlights, Osram Opto Semiconductors has developed the Synios P 2720 family of efficient LED light sources that have been based on compact dimensions and a scalable package concept.

The devices have been optimized for injecting light into light guides, and can be used as daytime running lights, position lights, and in tail light clusters. From the outside, the 15 LED versions can hardly be distinguished from each other, with all of them having the same solder pad design and package dimensions. On the inside, however, various chip sizes with an edge length between 500 µm and 1 mm, different levels of brightness, and a broad range of colors make the LEDs extremely variable.

Synios P 2720 provides high luminous flux even at high temperatures, which the 750 µm white chip version shows. Source: Osram

Car headlights and tail light clusters are turning more and more into identifying features in cars. Individual headlight design is the vehicle's signature and increases brand recognition. The compact dimensions and scalable package concept of the light sources in the Synios P 2720 family provide designers and engineers with greater freedom of design. The 2.7 mm x 2.0 mm x 0.6 mm packages are equipped with various chips in different sizes and colors. Their materials provide high reliability and temperature cycling stability. The devices have been designed and qualified for use in automotive lighting. Thanks to their SMT design, the components can be used in standard processes.

With their 120° emission characteristic and compact dimensions, the flexible light sources are particularly suitable for injection into light guides. The devices can be used in headlights, for example as daytime running lights, and perform various functions in tail lights. Thanks to optimum light extraction from the package and extremely good thermal properties, the LEDs offer more light per cost unit. For example, efficiency is 110 lm/W in white, and 80 lm/W in red.

The Synios P 2720 family comprises three chip sizes with and edge length of 500 µm, 750 µm and 1 mm, and is available in white, converted yellow, yellow, red, and super red.