News: LEDs
23 April 2021
ROHM launches 2.0cd white LEDs in compact 1608 size
ROHM has unveiled the CSL1104WB ultra-compact high-luminous-intensity white-chip LEDs, optimized for applications requiring high-brightness white-light emission such as Internet of Things (IoT) devices, drones and other battery-equipped applications.
In recent years, high-luminous-intensity (2.0cd) white LEDs have been increasingly adopted to improve visibility in a range of applications in the consumer electronics and automotive sectors. At the same time, the emergence of applications that mount multiple LEDs in a small space – such as IoT devices and drones – requires high-density mounting. This makes it difficult to achieve high brightness in a compact footprint.
High brightness in an ultra-compact size improves design flexibility
The CSL1104WB series achieves a high luminous intensity of 2.0cd in an ultra-compact 1608 size (1.6mm x 0.8mm = 1.28mm2), which was previously difficult to achieve, says Rohm. The result is the same luminosity as the existing mainstream 3528-size PLCC package (3.5mm x 2.8mm = 9.8mm2) but in an 87% smaller form factor.
Fine-grained, accurate white color chromaticity
Moreover, color variation is significantly improved, simplifying the color adjustment process by ensuring accurate white color chromaticity. This not only contributes to greater application space savings, but also improves design flexibility along with visibility through high-density mounting of high-luminosity LEDs, reducing development load considerably, says ROHM. In addition, qualification under the AEC-Q102 automotive reliability standard specifically developed for optical devices is planned, enabling smooth application inside industrial equipment and automotive applications that are exposed to harsh environments.
ROHM says that it is committed to further expanding its lineup of 1608-size white-chip LEDs from low to high brightness – aiming to improve design flexibility while reducing development load (i.e. decreasing application height, simplifying product design).
