Bourns 1206 Surface-Mount Fuse, 4A, 32V DC, High Inrush Current Withstand

The Bourns SinglFuse™ SF-1206HI400M-2 is a high-performance, multilayer surface-mount fuse engineered for robust overcurrent protection in circuits subjected to demanding surge conditions. This 4A-rated fuse is specifically designed to withstand high inrush currents, making it an ideal safeguard for power tools, battery management systems, and industrial control equipment where initial power surges are common.

Constructed with an EIA 1206 (3216 metric) footprint, it offers a compact yet highly reliable solution for modern PCB designs. The fuse operates by opening the circuit within 60 seconds when subjected to 200% of its rated current, providing a critical safety function to prevent damage to sensitive downstream components.

Key Technical Features

• High Inrush Capability: Uniquely designed to tolerate initial surge currents without nuisance tripping, ensuring stable operation during power-up.
• Low Resistance: Features a typical resistance of just 0.023 Ω, minimising power loss and heat generation within the circuit.
• High Interrupting Rating: Capable of safely interrupting fault currents up to 50A at 32V DC, providing dependable protection under severe fault conditions.
• Robust Construction: Operates reliably across an extensive temperature range from –55 °C to +150 °C, suitable for harsh industrial environments.
• Compliance & Safety: Listed to UL 248-14, and compliant with RoHS and halogen-free standards, ensuring both safety and environmental responsibility. It also features an ESD Classification of Class 6 (HBM) and a Moisture Sensitivity Level of 1 for robust handling.

With its combination of surge tolerance, precise fusing characteristics, and industry-standard compliance, this Bourns fuse delivers essential protection for advanced electronic applications.