ABLS-13.560MHZ-10-R20-D-T is an HC/49US (AT49) SMD low profile quartz crystal designed for precise timing applications. This fundamental mode crystal operates at 13.560 MHz with a frequency tolerance of ±10 ppm at +25°C and features a load capacitance of 20 pF. The device operates over an extended temperature range of -40°C to +85°C with a frequency stability of ±150 ppm, and has a maximum ESR of 50O. With compact dimensions of 11.5 x 4.7 x 4.2 mm, RoHS compliance, and suitability for reflow soldering, this crystal is ideal for computers, modems, microprocessors, and wireless applications requiring reliable frequency references.