ROHM recently announced high accuracy single-rank 1608-size high-brightness chip LEDs optimised for a wide variety of applications, from industrial equipment and consumer devices to automotive systems. The LEDs are claimed to improve brightness by up to 3x over conventional products, delivering class-leading brightness in the 1608 size (1.6mm x 0.8mm).
The need to reduce brightness variations is increasing as a greater number of applications and devices, particularly in the automotive and industrial sectors, are demanding improved consistency when configuring multiple LEDs side-by-side. However, up to now it has been difficult to minimise brightness variations during the manufacturing process. Conventionally, users were able to only narrow down the number of ranks from around 4 to 2-3, which still required sorting and the use of different resistors to match each rank, increasing the number of man-hours required along with inventory management.
ROHM surpassed the limits of conventional LED production by developing the SML-D15 series using a comprehensive, highly-integrated manufacturing system (from device fabrication). As a result, high-accuracy brightness is achieved and brightness variations reduced by 75 per cent. This also made it possible to provide a single rank of brightness (a rarity in the industry), significantly lightening design load.
In addition, by optimising the LED element ROHM was able to improve brightness by up to 3x over conventional products, delivering class-leading brightness in the 1608 size (1.6mm x 0.8mm). The LEDs are also AEC-Q101 qualified, making them suitable for applications demanding increased reliability such as automotive systems.