ECS Inc.'s ECX-1637B2 is a compact surface mount crystal that includes tight stability and low aging. It comes in a 2.0mm x 1.6mm x 0.45mm 4-pad package. The ECX-1637B2 offers low first year ±2 ppm aging and a tolerance and stability of ±10 ppm available over the temperature range of -30°C ~ 85°C. This component is ideal for wireless applications.