Abstract: An over-current protection device comprises at least one PTC component, at least one thermal dissipation layer, at least one adhesive layer and at least two isolation layers, wherein the PTC component is formed by interposing a PTC material between two electrode layers. The at least one adhesive layer as a thermal conductive medium is interposed between the PTC component and at least one thermal dissipation layer to combine them. The at least two isolation layers separate the thermal dissipation layer, adhesive layer and electrode layers into two electrical independent portions.

Abstract: A temperature sensor comprises at least one temperature sensing device and a sensing circuit. The temperature sensing device comprises a first electrode layer, a second electrode layer and a current-sensitive layer, wherein at least one of the first and second electrode layers comprises two electrically separated electrode plates, and the current-sensitive layer is laminated between the first and second electrode layers. The current-sensitive layer is made of PTC or NTC material, and the sidewalls are not plated with conductive films. The sensing circuit is electrically coupled to the temperature sensing device to read temperatures.

Abstract: An over-current protection device includes a current-sensitive element, two insulating layers and two electrode layers. The current-sensitive element comprises two electrode foils and a current-sensitive layer laminated between the two electrode foils, where the current-sensitive layer has the behavior of positive temperature coefficient. The two insulating layers are stacked on the upper and lower surfaces of the current-sensitive element, respectively, and the glass switching temperature thereof is between 90-120° C. or the heat dissipation rate is between 1-7W/° C.-m. The two electrode layers are connected to the two ends of the current-sensitive element, respectively.

Abstract: An over-current protection device comprises at least one PTC component, at least one thermal dissipation layer, at least one adhesive layer and at least two isolation layers, wherein the PTC component is formed by interposing a PTC material between two electrode layers. The at least one adhesive layer as a thermal conductive medium is interposed between the PTC component and at least one thermal dissipation layer to combine them. The at least two isolation layers separate the thermal dissipation layer, adhesive layer and electrode layers into two electrical independent portions.