Subminiature fuses fit space-constrained applications

11th February 2015
Mick Elliott

Rutronik has added the compact 470 and 476 Series of NANO2 subminiature fuses from Littelfuse to its portfolio. Both series provide surge tolerance and circuit protection against overload conditions for downstream components. The new fuses feature highly compact surface mountable packages for high design flexibility in space-constrained applications.

The SMT design supports higher placement speed and higher yields during product manufacturing. With a 1206 (3.15x1.5mm) footprint, the 470 series is the smallest 125VAC-rated surface-mountable fuse available in the Littelfuse portfolio.

It is designed mainly to serve as primary side circuit protection in compact applications with high AC voltage requirements. It comes with outstanding performance characteristics, including high breaking capacity and unparalleled I2t values.

The 470 series meets the US ENERGY STAR surge immunity requirements. Its operating temperature of 125°C, is ideal for LED lighting applications.

The 476 series is a family of 250VAC-rated surface mountable fuses in compact 2410 (6.10x2.69mm) footprint. Like the 470 series, it is designed for primary side circuit protection in compact devices with high voltage requirements.

It operates in extreme temperatures without excessive sacrifices on current re-rating and meets the global IEC61000-4-5 2 ed. surge immunity test requirements. Both series are available with ratings of up to 5A. Typical applications for the fuses include LED lighting, LCD/ LED TVs, white goods, notebooks/PCs and power supply units.

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