Circuit protection device with PTC device and backup fuse

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United States of America Patent

PATENT NO 12040109
APP PUB NO 20230037262A1
SERIAL NO

17779007

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Abstract

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A circuit protection device including a positive temperature coefficient (PTC) device and a backup fuse electrically connected in series with one another, the backup fuse comprising a quantity of solder disposed on a dielectric chip and having a melting temperature that is higher than a trip temperature of the PTC device, wherein the a surface of the dielectric chip exhibits a de-wetting characteristic relative to the solder such that, when the solder is melted, the solder draws away from the surface to create a galvanic opening in the backup fuse.

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Patent Owner(s)

Patent OwnerAddress
LITTELFUSE INCCHICAGO IL 60631

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fuentes, Sergio Newark, US 6 94
Matus, Yuriy Borisovich Pleasanton, US 17 4
Pineda, Martin G Fremont, US 23 8

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