Littelfuse Non-Resettable Fuse 6.3A, 125V Ceramic Body Super Fast Acting 045106.3MRL

Littelfuse 045106.3MRL Non-Resettable Fuse is a 6.3A, 125V surface mount fuse with a ceramic body, designed for precise and fast over-current protection in electronic circuits. It belongs to the Littelfuse 451 Series NANO2 surface mount fuses that utilize wire-in-air (WIA) square shape technology for compact size and high performance.

The fuse features super fast acting (FF) characteristics ideal for safeguarding delicate components such as alarm systems, audio/visual equipment, computer boards, portable telephones, power supplies, and medical apparatus. Its compact dimensions, with a width and height of 2.69mm and depth of 6.1mm, enable space-saving PCB designs suitable for modern electronic manufacturing.

With a breaking capacity of 50A, the fuse reliably interrupts fault currents, protecting circuits from damage. The terminal materials include tin lead plated, silver plated, and gold plated finishes that ensure excellent solderability and electrical connectivity. This fuse complies with important international standards including UL 248-1 and CSA, and meets RoHS and CE environmental directives, confirming its quality and safety credentials.

The fuse operates effectively within a broad temperature range from -55°C to 125°C, enabling usage across a variety of industrial and commercial environments where temperature stability is critical. Its resistance is 9.6mΩ, providing consistent circuit protection performance without compromising signal integrity.

These non-resettable fuses are particularly useful in electronics manufacturing, industrial automation, telecommunications, and consumer electronics applications where rapid fault isolation and compact design are essential. The product is supplied in reel packaging for efficient automated insertion during production, improving assembly speed and reliability.

The fuse is very fast acting and small in size for space-efficient board layouts. Its ceramic body material ensures durability and thermal stability under stress. Compatible with surface mount technology for automated assembly processes.

Approvals include UL, CSA, RoHS, and CE ensuring compliance with safety and environmental standards. Terminals plated with multiple metals enhance connectivity and prevent corrosion. Wide operating temperature range suitable for harsh environmental conditions.

Breaking capacity of 50A allows effective circuit protection against high fault currents. Ideal for protecting sensitive electronics including medical and communication devices. Reel packaging supports high-volume manufacturing with automated equipment.

Littelfuse 451 Series provides reliable performance for secondary side circuit protection. Explore more in our Electronics & Electricals section under Circuit Breakers & Fuse at EnvMart.

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