Positive characteristic thermistor device
    5.
    发明授权
    Positive characteristic thermistor device 失效
    正特性热敏电阻器件

    公开(公告)号:US5907271A

    公开(公告)日:1999-05-25

    申请号:US763365

    申请日:1996-12-11

    IPC分类号: H01C7/02 H01C7/18 H01C7/10

    摘要: A positive characteristic thermistor device includes a device main body made of a semiconductor ceramic material which reliably and cleanly delaminates upon the application of excessive voltage thereto. The main body has outer layers having lower porosity formed on both sides of an inner layer having higher porosity. The inner layer having higher porosity can be obtained by burning a ceramic material for positive characteristic thermistors including resin beads mixed therein. After forming the main body, an electrode is formed on the outer surface of each of the outer layers. When an overvoltage is applied to this positive characteristic thermistor device, delamination occurs in the inner layer having higher porosity to create an open-circuit in a circuit in which the thermistor device is connected.

    摘要翻译: 正特性热敏电阻器件包括由半导体陶瓷材料制成的器件主体,其在施加过大电压时可靠且清洁地分层。 主体具有在具有较高孔隙率的内层的两侧形成的具有较低孔隙率的外层。 具有较高孔隙率的内层可以通过对包含混合在其中的树脂珠的正特性热敏电阻的陶瓷材料进行烧制来获得。 在形成主体之后,在每个外层的外表面上形成电极。 当对该正特性热敏电阻器件施加过电压时,在具有较高孔隙率的内层中发生分层,以在其中连接热敏电阻器件的电路中产生开路。

    Positive characteristics thermistor device with a porosity occupying
rate in an outer region higher than that of an inner region
    6.
    发明授权
    Positive characteristics thermistor device with a porosity occupying rate in an outer region higher than that of an inner region 失效
    外部区域的孔隙率占据率高于内部区域的正特性热敏电阻器件

    公开(公告)号:US5790011A

    公开(公告)日:1998-08-04

    申请号:US671736

    申请日:1996-06-28

    IPC分类号: H01C7/02 H01C7/10 H01C7/13

    CPC分类号: H01C7/02

    摘要: There is provided a positive characteristics thermistor device having excellent thermal breakdown characteristics. According to the present invention, a positive characteristics thermistor device has a positive characteristics thermistor element 1 and electrodes 2 and 3 formed on principal surfaces of the positive characteristics thermistor element 1. The positive characteristics thermistor element 1 includes an inner region 4 and outer regions 5 and 6 and a porosity occupying rate of the outer regions 5 and 6 is set higher than that of the inner region 4.

    摘要翻译: 提供了具有优异的热击穿特性的正特性热敏电阻器件。 根据本发明,正特性热敏电阻器件具有正特性热敏电阻元件1和形成在正特性热敏电阻元件1的主表面上的电极2和3.正特性热敏电阻元件1包括内部区域4和外部区域5 并且外部区域5和6的孔隙率占据率被设定为高于内部区域4的孔隙率占据率。