FC4SDCBMF6.0-T1 is a resistance-weld SMD crystal oscillator from the C4SD series designed for precision timing applications. Based on the part number decoding, this crystal operates at 6.0 MHz with ±15 ppm frequency tolerance and ±15 ppm stability, featuring a 20 pF load capacitance and an extended operating temperature range of -55°C to +125°C. The device exhibits a maximum equivalent series resistance (ESR) of 100 O at its operating frequency, a shunt capacitance of 7 pF, and a drive level of 0.5 mW (0.1 mW typical), with annual aging of ±3 PPM. This crystal is lead-free, RoHS compliant, and suitable for applications requiring stable frequency references across wide temperature ranges, including telecommunications, industrial control systems, and precision instrumentation.