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1608-sized LEDs claim 75% reduction in brightness variation

Posted: 17 Dec 2015 ?? ?Print Version ?Bookmark and Share

Keywords:ROHM? LED? automotive?

ROHM has recently announced the availability of 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 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 four 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.

SML-D15 series

In response, the SML-D15 series was developed using a comprehensive, highly integrated manufacturing system (from device fabrication), allowing ROHM to surpass the limits of conventional LED production. As a result, high-accuracy brightness is achieved and brightness variations reduced by 75 per cent. This makes 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), stated the company. The LEDs are also AEC-Q101 qualified, making them suitable for applications demanding increased reliability such as automotive systems.

SML-D15 series

The SML-D15 series from ROHM makes it possible to provide a single rank of brightness, significantly lightening design load for applications such as industrial equipment and automotive systems.

Conventionally, customers ordering a specific brightness level would receive four different brightness ranks due to limitations in production technology. In contrast, leveraging its industry-leading comprehensive, integrated manufacturing process allowed ROHM to achieve breakthrough accuracy that reduces brightness variations by 75 per cent, making it possible to provide single-rank products that provide unmatched consistency in end-applications while significantly reducing design load.

SML-D15 series

SML-D15 series product line-up

Datasheet: http://rohmfs.rohm.com/en/products/databook/datasheet/opto/led/chip_mono/sml-d15-e.pdf





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