The ABLS-6.000MHZ-B4-T is a 6.000 MHz SMD low-profile crystal oscillator in HC/49US (AT49) package, designed for precision timing applications in computers, modems, microprocessors, and wireless systems. It features a compact form factor of 11.5 × 4.7 × 4.2 mm with an equivalent series resistance (ESR) of 100 O maximum at the 6.000 MHz fundamental frequency. The device operates over a temperature range of -20°C to +70°C with frequency stability of ±50 ppm maximum over the operating temperature range and frequency tolerance of ±50 ppm at +25°C. Additional specifications include a shunt capacitance of 7 pF maximum, load capacitance of 18 pF, drive level of 1 mW maximum (100 µW typical), and aging of ±5 ppm maximum in the first year. The crystal is RoHS compliant, hermetically sealed with no moisture sensitivity (MSL N/A), and suitable for RoHS reflow processes, making it ideal for commercial and industrial applications requiring reliable frequency reference.