The JYXT21S4-026.00000-99G4C0 is a surface mount (SMD) crystal resonator with a frequency of 26 MHz ±10 ppm and a size of 2016_4P. It is RoHS compliant and manufactured by Jingyou. The crystal resonator is used in electronic circuits to provide accurate timing signals for a variety of uses. It is typically used in telecommunications and networking equipment, automotive systems, medical equipment, and aerospace systems.