The WK4025BK-ND is a fuse manufactured by Littelfuse. It's part of their WK series, known for providing robust circuit protection in various applications. This particular model is a surface mount fuse designed for automated assembly processes.

Applications

• Power supplies: Protects power supplies from overcurrent and short circuits.
• Battery chargers: Safeguards battery chargers from damage due to excessive current.
• Portable electronics: Used in smartphones, tablets, and other portable devices to protect sensitive components.
• LED lighting: Protects LED drivers and lighting circuits from overcurrent conditions.
• Industrial equipment: Provides circuit protection in various industrial applications.

Features

• Surface mount design: Enables automated assembly and reduces board space requirements.
• Fast-acting: Provides quick protection against overcurrent conditions.
• Compact size: Allows for use in space-constrained applications.
• High interrupting rating: Capable of safely interrupting high fault currents.
• RoHS compliant: Meets environmental regulations for hazardous substances.

Benefits

• Improved circuit protection: Provides reliable protection against overcurrent and short circuits.
• Reduced downtime: Fast-acting characteristics minimize damage and downtime.
• Increased safety: Prevents fires and other hazards caused by overcurrent conditions.
• Simplified assembly: Surface mount design simplifies assembly and reduces manufacturing costs.
• Compliance with regulations: RoHS compliance ensures environmental safety.

Additional Details

The WK4025BK-ND has a current rating of 2.5A. The voltage rating is typically 32V or 63V, depending on the specific variation. The interrupting rating is usually 50A at the rated voltage. The fuse body is constructed from a ceramic material, offering good thermal and electrical insulation. It adheres to industry-standard surface mount dimensions. Refer to the Littelfuse datasheet for precise dimensions, electrical characteristics, and recommended soldering profiles. This particular fuse is designed for single-time overcurrent protection and must be replaced after activation. The operating temperature range generally falls between -40°C and +85°C. It's specifically designed for use in applications where size and performance are key considerations.