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    Surface-mounting coil component and method of producing the same
    3.
    发明授权
    Surface-mounting coil component and method of producing the same 有权
    表面安装线圈部件及其制造方法

    公开(公告)号：US07310871B2

    公开(公告)日：2007-12-25

    申请号：US11788588

    申请日：2007-04-19

    申请人： Katsutoshi Kuroiwa ,  Koichi Iguchi ,  Tomoo Kashiwa ,  Masaki Okamoto ,  Takahiro Samata

    发明人： Katsutoshi Kuroiwa ,  Koichi Iguchi ,  Tomoo Kashiwa ,  Masaki Okamoto ,  Takahiro Samata

    IPC分类号： H01F7/06 ,  H01F5/00

    CPC分类号： H01F27/292 ,  H01F17/045 ,  H01F27/027 ,  H01F2017/048 ,  Y10T29/4902 ,  Y10T29/49071 ,  Y10T29/49073

    摘要： A surface-mounting choke coil has a resin coating material with magnetic powder which is filled a space between the upper flange and the lower flange of a drum-type ferrite core, while covering the circumferential of the winding. The resin coating material with magnetic powder has a glass transition temperature Tg of about −20° C. or lower, more preferably about −50° C. or lower in a course of transferring from a glass state to a rubber state during changing of shear modulus with respect to temperature as a physical property when hardening, and the thickness of the upper flange of the drum-type ferrite core is about 0.35 mm or less, and a value of a ratio L2/L1 of an outer diameter L2 of the upper flange to a diameter L1 of the winding core of the drum-type ferrite core is about 1.9 or more.

    摘要翻译： 表面安装扼流线圈具有磁性粉末的树脂涂层材料，其在覆盖绕组的周向的同时填充鼓式铁氧体磁芯的上凸缘和下凸缘之间的空间。 具有磁性粉末的树脂涂层材料在剪切变化过程中玻璃化转变温度Tg为约-20℃或更低，更优选约-50℃或更低 相对于温度的模量作为硬化时的物理性质，滚筒式铁氧体磁芯的上凸缘的厚度为0.35mm以下，外径L 2的比L 2 / L 1的值 滚筒式铁氧体磁芯的卷芯的直径L 1为约1.9以上。

    Surface-mount coil
    5.
    发明授权
    Surface-mount coil 失效
    表面贴装线圈

    公开(公告)号：US06292083B1

    公开(公告)日：2001-09-18

    申请号：US09461217

    申请日：1999-12-16

    申请人： Takashi Tajima ,  Katsutoshi Kuroiwa

    发明人： Takashi Tajima ,  Katsutoshi Kuroiwa

    IPC分类号： H01F2729

    CPC分类号： H01F17/045 ,  H01F27/292 ,  H05K3/3426

    摘要： A structure of a surface-mount coil is provided which prevents a decrease in the fixing strength between the core and the lead frame of the surface-mount coil when soldering of a surface-mount coil to a mount board. Specifically, the structure of the surface mount coil of the present invention suppresses movement and diffusion of molten solder to lower faces of the core placing portions when soldering the external connection terminals to electrode lands of the mount board. The molten solder is detained on the electrode lands to form sufficient solder fillet on the external connection terminals, resulting in suppression of generation of defects in soldering and prevention of decreases in the fixing strength between the core and the lead frame by preventing heat transfer to the upper surface of the core mount portion of the surface mount coil.

    摘要翻译： 提供了表面安装线圈的结构，其防止了将表面安装线圈焊接到安装板时表面安装线圈的芯和引线框架之间的固定强度的降低。具体地， 本发明的表面贴装线圈在将外部连接端子焊接到安装基板的电极焊盘时，抑制熔融焊料向芯部放置部的下表面的移动和扩散。 熔融焊料被滞留在电极焊盘上，以在外部连接端子上形成足够的焊接圆角，从而抑制焊接中的缺陷的产生，并防止芯和引线框架之间的固定强度降低，防止热传递到 表面安装线圈的芯安装部分的上表面。