BOURNS SF-0603S050-2 SMD Slow Blow Fuse, 500mA, 0603

The BOURNS SinglFuse™ SF-0603S050-2 is a premium slow-blow surface-mount fuse engineered for dependable overcurrent protection in space-constrained electronics. Housed in a compact 0603 (1608 metric) package, this thin-film chip fuse offers a critical safeguard for modern, high-density circuits found in consumer electronics, telecommunications, and computing devices.

Its time-lag (slow-blow) characteristic allows it to withstand harmless temporary current surges, such as those caused by inrush currents during power-up, without blowing. It only opens permanently in the event of a sustained overload or short circuit, providing robust protection for sensitive components.

Key Features & Specifications

• Reliable Protection: Rated for 0.50A (500mA) continuous current and 50 V DC (35 V AC) voltage, with a high breaking capacity of 50A to safely interrupt severe fault currents.
• Miniature Footprint: The 0603 case style (1.6mm x 0.8mm) is ideal for densely populated printed circuit boards (PCBs), helping to save valuable board space.
• High-Quality Construction: Built on a ceramic substrate with a Cu/Ni plating and Sn overcoat, ensuring excellent solderability and long-term reliability.
• Defined Performance: Features a typical resistance of 232 mΩ and a typical I²t of 0.009 A²s. It will open within 5 seconds when subjected to 250% of its rated current.
• Designed for Manufacturing: Suitable for automated pick-and-place and reflow soldering processes, streamlining high-volume assembly.
• Compliant & Safe: This fuse is UL listed, RoHS compliant, and halogen-free, meeting stringent international safety and environmental standards. It operates reliably across a temperature range of –20°C to +105°C.

The SF-0603S050-2 is a vital component for designers seeking to enhance the safety and reliability of their compact electronic products, offering proven performance from