CRYSTAL 12MHZ 18PF HC49/US; Frequency Nom:12MHz; Crystal Case:Through Hole 11.5mm x 4.65mm; Frequency Stability + / -:50ppm; Load Capacitance:18pF; Frequency Tolerance + / -:30ppm; Product Range:HC49US Series; Operating Temperature Min:-10°C; Operating Temperature Max:60°C; Crystal Mounting Type:Through Hole; Frequency:12MHz; Frequency Stability:± 50ppm; No. of Pins:2Pins