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A surface-mount multi-layer electrical circuit protection device with an active element between PPTC layers
A surface-mount multi-layer electrical circuit protection device with an active element between PPTC layers
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机译:在PPTC层之间具有有源元件的表面安装多层电路保护装置
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摘要
There is disclosed an electrical circuit for connection between an electrical energy source and an electrical load, the circuit being formed on a circuit substrate and having at least one surface-mounted electrical circuit protection device. The surface-mounted electrical circuit protection device comprises a first polymeric positive temperature coefficient resistive ("PPTC") element and a second PPTC element; and at least one heat-generating electrical component positioned between the first and second PPTC elements and in effective thermal contact such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC elements and increasing the resistance of the first or second PPTC elements. A method for making the circuit protection device is also disclosed.
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