NX1612AA Crystal Units NDK NX1612AA Crystal Units are designed for TV tuners, office automation (OA), audio-visual (AV), and short-range wireless applications such as wireless LAN and BLUETOOTH®. These surface-mount crystal units come in an ultra-compact and thin package with dimensions of 1.6mm x 1.2mm x 0.3mm. NDK NX1612AA Crystal Units are highly reliable, lead free, and RoHS compliant. The series has a 24MHz to 80MHz nominal frequency range.