DISCRETE POWER TRANSISTOR PACKAGE HAVING SOLDERLESS DBC TO LEADFRAME ATTACH
    5.
    发明申请
    DISCRETE POWER TRANSISTOR PACKAGE HAVING SOLDERLESS DBC TO LEADFRAME ATTACH 审中-公开
    具有无焊DBC的离散功率晶体管封装到附件

    公开(公告)号:US20130175704A1

    公开(公告)日:2013-07-11

    申请号:US13344567

    申请日:2012-01-05

    IPC分类号: H01L23/28 H01L21/60

    摘要: A packaged power transistor device includes a Direct-Bonded Copper (“DBC”) substrate. Contact pads of a first lead are attached with solderless welds to a metal layer of the DBC substrate. In a first example, the solderless welds are ultrasonic welds. In a second example, the solderless welds are laser welds. A single power transistor realized on a single semiconductor die is attached to the DBC substrate. In one example, a first bond pad of the die is wire bonded to a second lead, and a second bond pad of the die is wire bonded to a third lead. The die, the wire bonds, and the metal layer of the DBC substrate are covered with an amount of plastic encapsulant. Lead trimming is performed to separate the first, second and third leads from the remainder of a leadframe, the result being the packaged power transistor device.

    摘要翻译: 封装的功率晶体管器件包括直接连接铜(“DBC”)基板。 第一引线的接触焊盘与无焊焊接部分连接到DBC基板的金属层。 在第一个例子中,无焊焊缝是超声焊接。 在第二个例子中,无焊焊缝是激光焊接。 在单个半导体管芯上实现的单功率晶体管连接到DBC衬底。 在一个示例中,模具的第一接合焊盘被引线接合到第二引线,并且管芯的第二接合焊盘被引线接合到第三引线。 模具,引线接合和DBC基板的金属层被一定量的塑料密封剂覆盖。 执行引线修整以将第一,第二和第三引线与引线框架的其余部分分离,结果是封装的功率晶体管器件。