SF-0603S040-2 is a slow blow thin film surface mount chip fuse designed for overcurrent protection in compact electronic applications. It features a rated current of 0.40 A, typical resistance of 0.35 O, rated voltage of 50 VDC, and an interrupting rating of 50 A @ 35 VAC / 50 A @ 50 VDC. The fuse has a typical I²t value of 0.004 A²s and operates within a temperature range of -20 °C to +105 °C. With its 1608 (EIA 0603) miniature footprint, RoHS compliance, and halogen-free construction, this fuse is ideal for portable memory devices, LCD monitors, digital cameras, cell phones, rechargeable battery packs, and other space-constrained applications requiring reliable overcurrent protection.