These crystals are ultra-small, low-profile, lightweight, and low-frequency SMD quartz crystal units that incorporate a tuning-fork quartz resonator. The CM8V-T1A tuning fork crystals feature high stability and low aging, guaranteed by hermetic sealing, and are highly shock- and vibration-resistant. These crystals are AEC-Q200 qualified, 100% Pb-free, and RoHS-compliant. The CM8V-T1A crystals are ideal for IoT, metering, industrial, automotive, health care, wearables, and portables.