| 摘要 |
<p>The utility model discloses a circuit protective device which comprises a thermal sensitive material layer of a positive temperature coefficient, an upper electrode layer, a lower electrode layer, an insulation layer, a first end electrode and a second end electrode, wherein the thermal sensitive material layer comprises an upper surface and a lower surface, at least part of the upper electrode layer covers the upper surface of the thermal sensitive material layer, at least part of the lower electrode layer covers the lower surface of the thermal sensitive material layer, the insulation layer cover an outer surface jointly formed by the upper electrode layer, the lower electrode layer and the thermal sensitive material layer, and the insulation layer comprises a top opening and a bottom opening. The top opening is used for enabling the upper electrode layer to be partially exposed, the bottom opening is used for enabling the lower electrode layer to be partially exposed, the first end electrode is electrically connected to the upper electrode layer through the top opening, and the second end electrode is electrically connected to the lower electrode layer through the bottom opening and is separated from the first end electrode.</p> |
