The 1N212000BC0BS is a SMD (surface mount device) crystal resonator manufactured by KDS. It has a frequency of 12MHz, with a frequency tolerance of ±20ppm, and it meets RoHS environmental standards. The crystal resonator is designed for use in a wide range of applications, such as frequency control and timing functions in smartphones, tablets, laptops, and other portable electronic devices. Additionally, it also features a small footprint and low profile, making it ideal for modern, space-constrained designs.