公开(公告)号：US08557640B2

公开(公告)日：2013-10-15

申请号：US13756811

申请日：2013-02-01

Applicant: Littelfuse, Inc.

Inventor： Richard Rodrigues ,  Johnny Chen ,  Ethan Kuo

IPC: H01L21/332

CPC classification number: H01L29/0661 ,  H01L29/0692 ,  H01L29/66121 ,  H01L29/861

Abstract: A low voltage protection device that includes a silicon substrate comprises an inner layer of a first dopant type. The device also includes a first outer layer of a second dopant type disposed adjacent a first surface of the inner layer and a second outer layer of the second dopant type disposed adjacent a second surface of the inner layer opposite the first surface. The device further includes a first mesa region disposed in a peripheral region of a first side of the low voltage protection device. The first mesa region includes a first area that includes a peripheral portion of a cathode of the low voltage protection device, the cathode formed by diffusing a high concentration of dopant species of the first type on a first surface of the silicon substrate, and a second area comprising a high concentration of diffused dopant species of the second type.

公开(公告)号：US10074642B2

公开(公告)日：2018-09-11

申请号：US14407264

申请日：2013-07-03

Applicant: LITTELFUSE, INC.

Inventor： Ader Shen ,  Ethan Kuo ,  Ting-Fung Chang

IPC: H01L27/02 ,  H02H9/04 ,  H02H9/00

CPC classification number: H01L27/0248 ,  H01L27/0255 ,  H01L27/0262 ,  H02H9/005 ,  H02H9/04 ,  H02H9/043 ,  H02H9/044

Abstract: A circuit protection component including a crowbar device for protecting electronic devices from transients is generally disclosed. The circuit protection component may include a steering diode bridge and a crowbar device electrically connected to the steering diode bridge. The crowbar device may have a base and an emitter formed on a first layer, the first layer defining a breakdown voltage, which when exceeded allows current to pass under the emitter and out the device through a hole formed in the emitter.

公开(公告)号：US20150116873A1

公开(公告)日：2015-04-30

申请号：US14407264

申请日：2013-07-03

Applicant: LITTELFUSE, INC.

Inventor： Ader Shen ,  Ethan Kuo ,  Ting-Fung Cchang

IPC: H01L27/02 ,  H02H9/00 ,  H02H9/04

CPC classification number: H01L27/0248 ,  H01L27/0255 ,  H01L27/0262 ,  H02H9/005 ,  H02H9/04 ,  H02H9/043 ,  H02H9/044

Abstract: A circuit protection component including a crowbar device for protecting electronic devices from transients is generally disclosed. The circuit protection component may include a steering diode bridge and a crowbar device electrically connected to the steering diode bridge. The crowbar device may have a base and an emitter formed on a first layer, the first layer defining a breakdown voltage, which when exceeded allows current to pass under the emitter and out the device through a hole formed in the emitter.

Abstract translation: 通常公开了包括用于保护电子设备免于瞬变的撬棍装置的电路保护组件。 电路保护组件可以包括电连接到转向二极管桥的转向二极管桥和短路器装置。 所述短路器装置可以具有形成在第一层上的基极和发射极，所述第一层限定击穿电压，当超过允许电流在发射极之下时，电流通过形成在发射极中的孔而流过器件。

公开(公告)号：US20130164923A1

公开(公告)日：2013-06-27

申请号：US13756811

申请日：2013-02-01

Applicant: Littelfuse, Inc.

Inventor： Richard RODRIGUES ,  Johnny Chen ,  Ethan Kuo

IPC: H01L29/66

CPC classification number: H01L29/0661 ,  H01L29/0692 ,  H01L29/66121 ,  H01L29/861

Abstract: A low voltage protection device that includes a silicon substrate comprises an inner layer of a first dopant type. The device also includes a first outer layer of a second dopant type disposed adjacent a first surface of the inner layer and a second outer layer of the second dopant type disposed adjacent a second surface of the inner layer opposite the first surface. The device further includes a first mesa region disposed in a peripheral region of a first side of the low voltage protection device. The first mesa region includes a first area that includes a peripheral portion of a cathode of the low voltage protection device, the cathode formed by diffusing a high concentration of dopant species of the first type on a first surface of the silicon substrate, and a second area comprising a high concentration of diffused dopant species of the second type.

Abstract translation: 包括硅衬底的低电压保护器件包括第一掺杂剂类型的内层。 该装置还包括邻近内层的第一表面设置的第二掺杂剂类型的第一外层和邻近内层的与第一表面相对的第二表面设置的第二掺杂剂类型的第二外层。 该装置还包括设置在低压保护装置的第一侧的周边区域中的第一台面区域。 第一台面区域包括第一区域，其包括低压保护装置的阴极的周边部分，阴极通过在硅衬底的第一表面上扩散高浓度的第一类型的掺杂物质形成;以及第二区域 区域包括第二类型的高浓度扩散掺杂物种类。