KP-1608MGC: Kingbright SMT LED is a product not carried by Digikey. We do have a similar product Digikey part 754-1118-1-ND to look at as an alternate.
Here is the data sheet for part 754-1118-1-ND which gives quick reference to the part specifications.
The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.