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Small in dimensions, big in safety

Novelty: SIBA premieres the first true SMD fuse capable of interrupting up to 4000 A

link to datasheetMarch 2010 – Easy mounting on circuit boards plus small dimensions - the advantages of SMD technology have long been used also in the development of fuses. So far, however, interrupting "real" short circuits such as in mains protection has not been the domain of SMD fuse links. SIBA's new SMD miniature fuse, just 4.5 x 16 mm in size, changes the game. It can safely interrupt currents of up to 4000 A.

Customarily, cylindrical 5 x 20 mm miniature fuses with an interrupt rating of 1500 A are used in a multitude of applications. They either come with pin-type end caps or are made with high temperature solder and gold caps to allow being processed SMD-style in a reflow soldering process. Their relative size and round fuse body, though, make them less than ideal for some applications.

Enter the block-shaped SMD miniature fuse: opposed to traditional variants, it offers unique advantages for the production process. As a side benefit it also legibly displays the rated current whereas, in the case of pin-type cylindrical fuses, rated current has to be decoded by colour first.

SIBA wouldn't be SIBA if their engineers hadn't seen to it that their new 4.5 x 16 mm-size block can interrupt currents as high as 4000 A. And while the distance between the end caps is short, it still meets the explosion-protection guidelines as specified in the relevant norm (IEC 60079-11 / DIN IEC 60079-11 (VDE 0170-7) Draft Standard 2008-04: Explosive Atmospheres - Part 11: Equipment Protection by Intrinsic Safety "i").


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Michael Schröer
Head Business Division Miniature Fuses
Telephone: +49-2306-7001-294
michael.schroeer@siba.de



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