CRYSTAL 12.288MHZ 18PF HC-49S; Frequency Nom:12.288MHz; Crystal Case:Through Hole 10.3mm x 5mm; Frequency Stability + / -:50ppm; Load Capacitance:18pF; Frequency Tolerance + / -:30ppm; Product Range:AS Series; ESR:50ohm ;RoHS Compliant: Yes