The SMLD1x (without a dash in the part number) is a family of parts that covers a wavelength range from 470 nm (dark blue) to 527 nm (green). One of the main features of this series is the long life that prevents darkening even when the power is on for a long period of time. Compared to an epoxy resin type, this LED series achieves 20x longer life while maintaining 100% luminosity. This product family also employs a type of material that allows it to have enhanced mold strength, providing good performance even when subjected to mechanical or shock stress.