CN2237280Y - 轴向塑封双向触发二极管 - Google Patents

轴向塑封双向触发二极管 Download PDF

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Publication number
CN2237280Y
CN2237280Y CN95230038U CN95230038U CN2237280Y CN 2237280 Y CN2237280 Y CN 2237280Y CN 95230038 U CN95230038 U CN 95230038U CN 95230038 U CN95230038 U CN 95230038U CN 2237280 Y CN2237280 Y CN 2237280Y
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China
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model
silicon chip
copper lead
positive
diode
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Expired - Fee Related
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CN95230038U
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张立明
邓春来
盖学敏
李志福
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CHAOYANG RADIO ELEMENT FACTORY LIAONING
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CHAOYANG RADIO ELEMENT FACTORY LIAONING
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1301—Thyristor
    • H01L2924/13034—Silicon Controlled Rectifier [SCR]

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

本实用新型属于基本电气元件的半导体器件。它所采取的是轴向叠层结构即在一根对称轴线上设有PNP型或NPN型硅片，与硅片接触的是焊片，焊片的另一面与铜引线连接，铜引线与外部镀锡铜引线连接，硅片及焊片的外表面设有保护层。二极管整体采用塑料封装。这种轴向叠层结构相比现有的平面结构具有击穿电压范围宽(16V～500V)、转折电压对称性好等优点。

Description

轴向塑封双向触发二极管
本实用新型涉及一种属于基本电气元件的轴向塑封双向触发二极管。
目前，普通双向触发二极管都是平面结构，即在一个平面上加工成PNP型硅或NPN型硅。实用新型专利公报(89年5卷52号)公开了一种“大功率稳压二极管”(公告号CN2050219U)的专利申请，即属这种结构。这种二极管的最大缺点是击穿电压范围窄，转折电压对称性不好。
本实用新型的目的就是为解决背景技术的不足而提供一种具有轴向迭层结构的轴向塑封双向触发二极管。
本实用新型的目的是这样实现的：在二极管引线的对称轴线上设有PNP型硅片或NPN型硅片，硅片的轴线外端面设有焊片，在焊片的轴线外端面焊有铜引线，铜引线与外部镀锡铜引线连接，在环绕PNP型硅片或NPN型硅片及焊片的轴线外表面设有保护层。上述二极管的结构整体外表面设有封装塑料层。
本实用新型相比背景技术具有如下优点：1、击穿电压范围宽(16V～500V)；2、转折电压对称性好，抗电流冲击性强。
图1为本实用新型内部结构剖视图。
图2为本实用新型外型示意图。
下面结合附图通过实施例对本实用新型做进一步详述：如图1所示，用两个圆形铅银锡合金焊片2夹焊住NPN型或PNP型硅片1，两个圆形铅银锡合金焊片2分别与铜引线4焊接，铜引线4与外部镀锡铜引线5焊接。在NPN型或PNP型硅片1及铅银锡合金焊片2的外环表面设有保护层3(该保护层可用硅橡胶或玻璃材料制作)。二极管的结构整体设有封装塑料层6，封装塑料为环氧KH-407。这与传统的金属封装相比具有易于生产，成本较低的优点。其外形如图2所示，显得简单、精巧。本实用新型具有双向对称的“S”型负阻特性，因而被广泛应用于可控硅、三极管相控电路的触发及各种线路的过压保护等领域。

Claims (2)

1、一种轴向塑封双向触发二极管，其特征在于在二极管引线的对称轴线上设有PNP型硅片或NPN型硅片，硅片的轴线外端面设有焊片，在焊片的轴线外端面焊有铜引线，铜引线与外部镀锡铜引线连接，在环绕PNP型硅片或NPN型硅片及焊片的轴线外表面设有保护层。
2、按照权利要求1所述的二极管，其特征在于所述的结构整体外表面设有封装塑料层。
CN95230038U 1995-01-09 1995-01-09 轴向塑封双向触发二极管 Expired - Fee Related CN2237280Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN95230038U CN2237280Y (zh) 1995-01-09 1995-01-09 轴向塑封双向触发二极管

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Application Number Priority Date Filing Date Title
CN95230038U CN2237280Y (zh) 1995-01-09 1995-01-09 轴向塑封双向触发二极管

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CN2237280Y true CN2237280Y (zh) 1996-10-09

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577234B (zh) * 2008-05-09 2010-12-01 如皋市易达电子有限责任公司 一种整流二极管的生产方法
CN102446977A (zh) * 2010-12-23 2012-05-09 南通星河电子有限公司 一种轴向整流二极管
CN102468343A (zh) * 2010-11-11 2012-05-23 曹榆 体外散热轴向型塑封功率二极管
CN107195626A (zh) * 2017-07-06 2017-09-22 如皋市大昌电子有限公司 一种玻封双向触发管

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577234B (zh) * 2008-05-09 2010-12-01 如皋市易达电子有限责任公司 一种整流二极管的生产方法
CN102468343A (zh) * 2010-11-11 2012-05-23 曹榆 体外散热轴向型塑封功率二极管
CN102446977A (zh) * 2010-12-23 2012-05-09 南通星河电子有限公司 一种轴向整流二极管
CN102446977B (zh) * 2010-12-23 2013-12-11 南通星河电子有限公司 一种轴向整流二极管
CN107195626A (zh) * 2017-07-06 2017-09-22 如皋市大昌电子有限公司 一种玻封双向触发管
CN107195626B (zh) * 2017-07-06 2019-12-31 如皋市大昌电子有限公司 一种玻封双向触发管

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