Surface mount inductor and method for manufacturing the same
a technology of inductance and surface mount, which is applied in the direction of inductance, inductance with magnetic core, coil manufacturing, etc., can solve the problems of increasing the direct current resistance of the external terminal and and achieve the effect of increasing the direct current resistance of the external terminal and ensuring the quality of the conforman
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first embodiment
[0040]FIG. 1 is a perspective view of a surface mount inductor according to the first embodiment. As illustrated in FIG. 1, a surface mount inductor 1 includes a compact 10, a spiral coil 20, disposed inside the compact 10, and a first external terminal 30 and a second external terminal 40, which are disposed on the compact 10 and electrically connected to the coil 20.
[0041]The surface mount inductor 1 is electrically connected to a wire of a circuit board, not illustrated, through the first and second external terminals 30 and 40. The surface mount inductor 1 is used as, for example, an inductor or a transformer for a power circuit or a DC / DC converter circuit through which a large current flows, and installed in, for example, a car-mount advanced driver-assistance system (ADAS).
[0042]The compact 10 is substantially rectangular parallelepiped. The compact 10 has surfaces including a first end surface 11, a second end surface 12, opposing the first end surface 11, a first side surfa...
second embodiment
[0069]FIG. 4 is a bottom view of a surface mount inductor according to a second embodiment. The second embodiment differs from the first embodiment in a component of the compact. This different component will now be described below. Other components are the same as those of the first embodiment, and are thus denoted with the same reference signs as those in the first embodiment without being described.
[0070]As illustrated in FIG. 4, in a surface mount inductor 1A according to the second embodiment, an irregular interface 80 is formed on the bottom surface (mount surface) 17 of a compact 10A. FIG. 4 omits illustrations of the external terminals 30 and 40.
[0071]The irregular interface 80 includes multiple gaps arranged irregularly. The gaps are areas that do not include a magnetic powder and a resin. The irregular interface 80 can enhance the withstanding voltage at the bottom surface 17 of the compact 10A.
[0072]The irregular interface 80 extends from the exposed portion of the first ...
third embodiment
[0074]FIG. 5 is a perspective view of a surface mount inductor according to a third embodiment. The third embodiment differs from the first embodiment in a component of the coil. This different component will now be described, below. Other components are the same as those of the first embodiment, and thus are denoted with the same reference signs as those of the first embodiment without being described.
[0075]As illustrated in FIG. 5, in a coil 20B of a surface mount inductor 1B according to the third embodiment, the first feeder end portion 21 and the second feeder end portion 22 are drawn out from the wound portion 23 so as to cross each other. Thus, as in the case of the first embodiment, the first feeder end portion 21 and the second feeder end portion 22 can be drawn out in the winding direction of the wound portion 23, so that the characteristics of the coil 20 can be enhanced.
[0076]The present disclosure is not limited to the above embodiments, and may be changed in design wit...
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Abstract
Description
Claims
Application Information
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