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Vishay ships first thin-film chip resistor

Posted: 12 Feb 2003 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? draloric m25si? fusible chip resistor?

The Draloric M25SI resistor from Vishay Intertechnology Inc. is touted to be the industry's first thin-film, fusible chip resistor and is available in a 1206 case size.

The device provides overload protection for battery circuits and control units, as well as for circuit function test applications in end products including battery chargers, cordless phones, DVD players, CD-ROM readers, and power supplies.

The M25SI provides a medium- to fast-acting fuse with a flame-retardant protective topcoat to limit the risk of damage to circuits behind the fusing resistor in case of a breakdown. The device has a temperature coefficient of 100ppm/K, resistance values from 1 ohm to 3.9 kiloohms with 5 percent tolerance. Extended values with temperature coefficient down to 50ppm/K and tolerance down to 1 percent are also available.

It is rated at 0.25W power dissipation at 70C and, when tested in accordance with CECC 40401, has a thermal resistance of 220K/W.

The M25SI consists of metal film on high-quality ceramic with SnPb contacts on a Ni barrier layer, weighs 10g per 1,000 pieces, and features an operating temperature range of -55C to 125C.

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