This is a surface mount crystal resonator manufactured by TXC Corporation with part number AA40000003. It is a 40MHz ± 30ppm SMD-5032 with RoHS lead-free certification. This device is suitable for applications such as timing, frequency control, or frequency selection in automotive systems, telecommunications, computers, consumer electronics, networking, and medical devices. It features an industry-standard footprint, low profile, and low operating current for extended operating life. Its package is designed for easy soldering using Infra-Red and Vapor Phase Reflow methods.