FC4SDCBMF14.7456-T1 is a resistance weld SMD crystal oscillator from the C4SD series designed for precision frequency control applications. This device operates across a frequency range of 3.2 MHz to 80 MHz with a frequency tolerance of ±15 ppm at 25°C and frequency stability of ±50 ppm, supporting an operating temperature range of -55°C to +125°C. The crystal features a shunt capacitance of 7 pF, load capacitance of 20 pF, and a maximum drive level of 0.5 mW (0.1 mW typical), with maximum equivalent series resistance (ESR) varying by frequency band from 300 O at 3.2–3.5 MHz down to 70 O at 70–80 MHz. The device is lead-free, RoHS compliant, and features Sn/Ag3/Cu0.5 termination finish with moisture sensitivity level 1. It is commonly used in telecommunications, consumer electronics, and industrial timing applications where stable, precise frequency references are required across wide temperature ranges.