ROHM Launches Two Types of 1608 Size Teal LEDs
Colorblind people who have difficulty distinguishing between red (Type P) and green (Type D)
Color combinations of turquoise, yellow, and orange make it easier to distinguish color differences


Most electronic devices transmit information in red and green. If cyan, orange, or yellow is used here, it becomes easier for people with Type P or Type D color vision, who have difficulty distinguishing between red and green, to identify color differences.

ROHM announced on the 9th that it has developed SMLD12E2N1W and SMLD12E3N1W, cyan LEDs of size 1608 (1.6×0.8mm) with special wavelengths (λD: 496nm/505nm).

SMLD12E2N1W and SMLD12E3N1W, which have obtained certification from the Color Universal Design Association (CUDO) of Japan, can be combined with ROHM’s blue LED SMLD12BN1WT86 (λD: 470nm), yellow LED SML-D15YW (λD: 590nm), and orange LED SML-D15DW (λD: 605nm).

Color Universal Design is a method of using color that takes into consideration various color visions to ensure that information is accurately conveyed to as many people as possible.

The SMLD12 series, including SMLD12E2N1W and SMLD12E3N1W, employs a new resin and undergoes a current conduction test (25℃, IF=2It can maintain luminous intensity even when energized at 0mA for 1000 hours. It has a lifespan approximately 20 times longer than conventional epoxy resin products and has approximately 25 times stronger mold strength than silicone resin products. In addition, a lineup compliant with AEC-Q102 is also available.

The two products established a mass production system of 1 million units per month starting in April of this year and began shipping samples at 60 yen per unit (excluding tax).