Electronic Control Device
    11.
    发明公开

    公开(公告)号:US20230380068A1

    公开(公告)日:2023-11-23

    申请号:US18029945

    申请日:2021-09-24

    Abstract: An object of the present invention is to provide an electronic control device capable of improving the connection life and reliability of solder connecting a printed circuit board and a QFN type semiconductor package. For this purpose, a printed circuit board 106 includes a first land 109 connected to a first metal terminal 104 via a solder 107, a second land 110 connected to a second metal terminal 105 via a solder 108, a third land 112 disposed on the outer peripheral side of a semiconductor package 101 with respect to the first land 109, and a resist 113 formed on the third land 112 so as to be in contact with the lower surface of a molding resin 103.

    Printed circuit board and electronic apparatus

    公开(公告)号:US09609741B1

    公开(公告)日:2017-03-28

    申请号:US15272201

    申请日:2016-09-21

    Inventor: Koji Noguchi

    Abstract: A printed wiring board has thereon an electronic component having a heat radiation pad, and an electrolytic capacitor provided for the electronic component. The printed wiring board further has thereon another electronic component having another heat radiation pad and exhibiting a higher heat value than that of the electronic component, and another electrolytic capacitor provided for the other electronic component. The heat radiation pad of the electronic component, a ground terminal of the electrolytic capacitor, the other heat radiation pad for the other electronic component, and another ground terminal of the other electrolytic capacitor are connected by using a ground conductor. In the ground conductor, a thermal resistance between the other heat radiation pad and other ground terminal is lower than the thermal resistance between the heat radiation pad and the ground terminal.

    PRINTED CIRCUIT BOARD
    14.
    发明申请
    PRINTED CIRCUIT BOARD 审中-公开
    印刷电路板

    公开(公告)号:US20150313005A1

    公开(公告)日:2015-10-29

    申请号:US14406913

    申请日:2012-06-15

    Abstract: [Object] There is suggested a printed circuit board capable of realizing impedance matching by securing joint reliability between signal pins of a surface mount connector and signal pin pads and preventing the reduction of impedance of signal pin pads while minimizing the reduction of a wirable area.[Solution] A printed circuit board equipped with a signal pin pad, which is soldered to a signal pin from a surface mount connector, and a ground layer located as a lower layer below the signal pin pad; wherein a fillet is formed around a joint area between the signal pin and the signal pin pad after soldering; wherein a cut-out portion is provided in the signal pin pad within a joint area with the signal pin; and wherein the size of the cut-out portion is set within the range of being completely covered within the joint area with the signal pin based on size tolerance of the signal pin, fabrication tolerance of the printed circuit board, and mount position tolerance of the surface mount connector.

    Abstract translation: 提出了一种印刷电路板,其能够通过确保表面安装连接器的信号引脚和信号引脚焊盘之间的连接可靠性来实现阻抗匹配,并且防止信号引脚焊盘的阻抗减小,同时最小化可吸收区域的减少。 [解决方案]配备有从表面安装连接器焊接到信号引脚的信号引脚焊盘的印刷电路板和位于信号引脚焊盘下方的下层的接地层; 其中在焊接之后,在信号引脚和信号引脚焊盘之间的接合区域周围形成圆角; 其中在与所述信号引脚的接合区域内的所述信号引脚焊盘中设置切口部分; 并且其中,根据信号引脚的尺寸公差,印刷电路板的制造公差以及印刷电路板的安装位置公差,将切除部分的尺寸设定在与信号销的接合区域内完全覆盖的范围内 表面贴装连接器。

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