ConnThe AbelConn TXM26M0004252CBCEO00T is a type of SMD crystal resonator with a frequency of 26MHz ±10ppm. SMD stands for "surface-mount design," which allows for the chip to be mounted directly onto a printed circuit board (PCB). It is a 2520-4P RoHS type (RoHS stands for "Restriction of Hazardous Substances"), meaning the part does not contain the hazardous materials banned in the European Union. Additionally, the part is made with 4 pins and is lead-free.