Epcos Ag

Epcos (zhuhai Ftz) Co., Ltd.

Dongjian Song

Shaoyu Sun

Jifeng Qin

Zhouquan He

An electric device is disclosed. In an embodiment, the device includes an electric element having an element terminal and a conductive spring being deflected, the spring being electrically coupled to the element terminal by a fusible joint. The device further includes a switch including a first monitor terminal and a second monitor terminal, the switch having a state that is changeable between a first connection state, where the first monitor terminal and the second monitor terminal are electrically coupled, and a second connection state, where the first monitor terminal and the second monitor terminal are electrically decoupled, and wherein the electrical device is configured such that when the joint fuses, the spring relaxes, thereby decoupling the spring and the element terminal and changing the state of the switch.

Electric device

A resistor includes a ceramic body, metal electrodes on sides of the ceramic body, each of which is connected to an electrode lead, and an insulating layer contacting a metal electrode among the metal electrodes. The insulating layer is meltable in response to heat. A conductive connector contacts the insulating layer above the metal electrode and is configured to short the metal electrodes when the insulating layer melts.

Growing community of inventors

Zhuhai, China

Dongjian Song