ABLS-3.6864MHZ-B4H-T is an SMD low-profile crystal oscillator designed for timing and frequency control applications. Operating at a frequency of 3.6864 MHz in AT-cut fundamental mode, this device is housed in a compact HC/49US (AT49) package measuring 11.5 × 4.7 × 4.2 mm. The crystal features a frequency tolerance of ±50 ppm maximum at +25°C, frequency stability of ±50 ppm over the operating temperature range (referenced to +25°C), and an equivalent series resistance (ESR) of 180 O maximum. It operates reliably over a temperature range of -20°C to +70°C with a load capacitance of 18 pF, a shunt capacitance of 7 pF maximum, and a maximum drive level of 1 mW (100 µW typical). This crystal is RoHS and Pb compliant, suitable for reflow soldering, and is commonly used in computers, modems, microprocessors, automotive and industrial applications, and wireless systems where stable frequency reference is essential.