The 04381.75WR is a surface mount fuse manufactured by Littelfuse Inc. designed to provide overcurrent protection for sensitive electronic circuits. This fuse is a thin film device offering precise and reliable performance in a compact package. The 'WR' in the part number typically indicates a RoHS compliant and halogen-free construction, aligning with modern environmental standards.

Applications:

• Portable Electronics: Protects battery-powered devices like smartphones, tablets, and wearables from overcurrent damage.
• Solid State Drives (SSDs): Safeguards SSDs from current surges that can damage sensitive memory components.
• LCD and LED Backlighting: Prevents damage to display backlighting circuits from short circuits or excessive current draw.
• USB Ports: Protects USB ports and connected devices from overcurrent faults caused by faulty peripherals.
• Medical Devices: Provides reliable overcurrent protection in medical equipment where safety and performance are critical.

Features:

• Surface Mount Technology (SMT): Allows for automated assembly and high-density circuit board design.
• Thin Film Construction: Provides precise and consistent performance characteristics.
• Compact Size: Minimizes board space requirements, making it suitable for small electronic devices.
• RoHS Compliant and Halogen-Free: Meets environmental regulations for hazardous substance content.
• Fast-Acting: Quickly interrupts the circuit in response to overcurrent conditions.

Benefits:

• Enhanced Circuit Protection: Prevents damage to sensitive electronic components from overcurrent events.
• Improved Product Reliability: Reduces the risk of failures due to electrical faults, extending the lifespan of electronic devices.
• Space Savings: Compact SMT package allows for higher component density on circuit boards.
• Environmental Compliance: Meets environmental regulations, making it suitable for global markets.
• Reduced Downtime: Fast-acting response minimizes the duration of overcurrent events, reducing downtime and repair costs.

Additional Details:

The 04381.75WR fuse is typically constructed using a ceramic substrate with a thin film fuse element. It is designed to withstand reflow soldering processes and is compatible with standard SMT assembly techniques. Specific electrical characteristics, such as voltage rating, breaking capacity, and I2t value, can be found in the Littelfuse datasheet for this part number. It is important to consult the datasheet to ensure proper fuse selection for a given application. This fuse provides a reliable and compact solution for overcurrent protection in a wide range of electronic devices.