| 摘要 |
It is provided a new protection device with a large current capacity, which can sense a relatively low abnormal temperature, and further has a simple construction and is not large in size. The protection device comprises (1) a polymer PTC device (18) having metal electrodes (14, 16) on the both main surfaces, and (2) a shape memory alloy lead (20), wherein the shape memory alloy lead is connected to the polymer PTC device by an electrically conductive adhesive (22) containing a thermoplastic resin and an electrically conductive filler.
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