OVER-CURRENT PROTECTION DEVICE
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United States of America
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Issued Date -
Mar 20, 2025
app pub date -
Apr 16, 2024
filing date -
Apr 16, 2024
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Abstract
An over-current protection device includes an electrode layer and a heat-sensitive layer. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic, and is laminated between a top metal layer and a bottom metal layer of the electrode layer. The heat-sensitive layer includes a polymer matrix and a conductive filler. The polymer matrix includes a fluoropolymer. The fluoropolymer has a plurality of spherulites, and the fractal dimension of each spherulite is lower than 12.
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