SF-3812TM125T-2 is a SinglFuse™ telecom protector designed for low-current overcurrent protection in telecommunication circuit applications requiring high surge tolerance. The device features a 1.25 A rated current with 0.1 O typical resistance and a rated voltage of 600 VAC, delivering a typical I²t of 22 A²s and maximum power dissipation of 0.6 W. It employs a ceramic tube structure in an EIA 3812 (10030 metric) footprint with surface-mount packaging for automated assembly, and meets UL 248-14 compliance and Telcordia GR-1089-CORE Issue 7 standards. The fuse operates over a temperature range of -55°C to +125°C and is RoHS compliant and halogen-free, making it ideal for telecommunications equipment, network protection circuits, and applications requiring reliable surge protection with minimal nuisance tripping.