TW201342403A - Coil component - Google Patents
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Abstract
Description
本發明係關於一種線圈零件，特別是關於一種表面安裝型線圈零件的端子電極構造。 The present invention relates to a coil component, and more particularly to a terminal electrode configuration of a surface mount type coil component.
伴隨著近年來電子機器的小型化，對於線圈零件，也要求高密度安裝。例如在專利文獻1中公開了能夠高密度安裝的表面安裝型的線圈零件。 With the recent miniaturization of electronic equipment, high-density mounting is also required for coil components. For example, Patent Document 1 discloses a surface mount type coil component that can be mounted at a high density.
該線圈零件具備具有卷芯部和凸緣部的鐵心、形成鐵心的收容空間的絕緣性殼體、在至少一部分露出於外部的狀態下機械式地固定於殼體的端子金屬配件、及接合於端子金屬配件並且經由殼體而捲繞於卷芯部周圍的繞線(導線)。鐵心的收容空間包含與安裝面大致平行的底面而劃分，卷芯部和凸緣部分別具有與底面相對向的卷芯部的下表面和凸緣部的下表面，且卷芯部的下表面相對於凸緣部的下表面係位於同一平面上。在與殼體的凸緣部相對向的位置上規定有朝向安裝面突出的腳部，並於腳部配置有端子金屬配件的安裝部。 The coil component includes an iron core having a winding core portion and a flange portion, an insulating case forming a housing space for the iron core, and a terminal metal fitting that is mechanically fixed to the housing in a state where at least a part of the coil is exposed to the outside, and is bonded to The terminal metal fitting is wound around a winding (wire) around the core portion via the housing. The accommodating space of the core includes a bottom surface substantially parallel to the mounting surface, and the core portion and the flange portion respectively have a lower surface of the core portion facing the bottom surface and a lower surface of the flange portion, and a lower surface of the core portion The lower surface with respect to the flange portion is located on the same plane. A leg portion that protrudes toward the mounting surface is defined at a position facing the flange portion of the casing, and a mounting portion of the terminal fitting is disposed on the leg portion.
[專利文獻1]日本專利特開2009-117627號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-117627
在上述線圈零件中，導線與端子金屬配件的連接係藉由將導線的前端部熱壓接於端子金屬配件上而實現。若將導線熱壓接於端子金屬配件，則導線的線材(Cu)與端子金屬配件表面的鍍膜(Ni及Sn)會發生反應而形成合金層。此處，因為合金層的熔點高，所以將線圈零件安裝至電路基板上時，在該部分成為焊料的接合面之情況下，會成為使焊料可濕性下降的主要原因。尤其，如圖9(a)所示，若將被熱壓接的導線20的前端部20e的位置對準端子金屬配件21的端子面的端部，就會在導線的延伸方向上從端子面的一端部到另一端部為止，即在端子面的廣大範圍內形成合金層，則存在有合金層阻礙焊料圓角(solder fillet)的形成而引起安裝不良的危險。 In the above coil component, the connection of the wire to the terminal metal fitting is achieved by thermally crimping the front end portion of the wire to the terminal metal fitting. When the wire is thermocompression bonded to the terminal metal fitting, the wire (Cu) of the wire reacts with the plating film (Ni and Sn) on the surface of the terminal metal fitting to form an alloy layer. Here, since the melting point of the alloy layer is high, when the coil component is mounted on the circuit board, when the portion becomes the joint surface of the solder, the solder wettability is lowered. In particular, as shown in Fig. 9(a), when the position of the tip end portion 20e of the thermocompression-bonded lead wire 20 is aligned with the end portion of the terminal surface of the terminal fitting 21, the terminal surface is extended in the direction in which the wire extends. From the one end portion to the other end portion, that is, the alloy layer is formed over a wide range of the terminal faces, there is a possibility that the alloy layer hinders the formation of solder fillets and causes mounting failure.
為了解決該問題，如圖9(b)所示，可以不將導線20的前端部20e設定於端子金屬配件的端子面的端部，而將其設定於該端部之更內側(中央附近)。在該情況下，從鐵心的卷芯部所拉出的導線20在通過端子金屬配件21的端子面並被拉出至其更前方之後，使相較於應作為導線的前端部的位置更後方的導線部分(實線部分)熱壓接於端子面，而前方的導線部分(參照虛線)有切斷而去除的必要。但是，若前方的導線部分接觸於端子金屬配件21的端子面，則在端子金屬配件表面的鍍膜因熱壓接時的熱而熔融之際，導線會固著於端子金屬配件的表面，而會有無法很好地切斷而去除的問題。 In order to solve this problem, as shown in FIG. 9(b), the tip end portion 20e of the lead wire 20 may be set to the end portion of the terminal surface of the terminal fitting, and may be set to the inner side (near the center) of the end portion. . In this case, after the lead wire 20 pulled out from the core portion of the core is pulled out to the front side of the terminal fitting 21, it is made rearward than the position which should be the front end portion of the wire. The wire portion (solid line portion) is thermocompression bonded to the terminal surface, and the front wire portion (refer to the broken line) is cut and removed. However, if the front wire portion is in contact with the terminal surface of the terminal metal fitting 21, the wire will be fixed to the surface of the terminal metal fitting when the coating on the surface of the terminal metal fitting is melted by heat during thermocompression bonding. There are problems that cannot be cut off and removed.
為了解決上述課題，本發明的線圈零件，其特徵在於，其具備捲繞導線而成的線圈、支撐上述線圈的基體、及連接有上述線圈的終端部的端子金屬配件，且上述基體具有與上述線圈的上述終端部的延伸方向平行的第1表面，上述端子金屬配件具有位於上述基體的上述第1表面上的第1端子部，上述第1端子部包含具有與上述終端部接觸的第1端子面的接觸部、及位於上述終端部的延長線上，並在與上述第1端子面相同的平面上不具有端子面的非接觸部。 In order to solve the above problems, a coil component according to the present invention includes a coil in which a wire is wound, a base body that supports the coil, and a terminal metal fitting that connects a terminal portion of the coil, and the base body has the above-described a first surface of the coil in which the extending direction of the terminal portion is parallel, the terminal metal fitting has a first terminal portion on the first surface of the base body, and the first terminal portion includes a first terminal that is in contact with the terminal portion The contact portion of the surface and the extension line on the end portion of the terminal have no contact portion on the same plane as the first terminal surface.
根據本發明，因為在熱壓接時導線的終端部不會被壓接於端子金屬配件的表面，所以能夠避免導線的終端部的壓接，從而在熱壓接後能夠確實地且容易地進行導線的切斷去除。 According to the present invention, since the end portion of the wire is not crimped to the surface of the terminal fitting at the time of thermocompression bonding, the crimping of the end portion of the wire can be avoided, so that it can be reliably and easily performed after the thermocompression bonding. The wire is cut off.
在本發明中，較佳為上述第1端子部具有由上段部及下段部所構成的階差形狀，上述上段部的表面為上述接觸部的上述第1端子面，上述下段部的表面為設置於上述非接觸部的第2端子面。根據該構成，能夠較寬地確保進行焊接安裝的端子面的面積。另外，在壓接時也可以不需正確地對線圈的終端部進行定位，而能夠容易地壓接導線的終端部。 In the above aspect of the invention, preferably, the first terminal portion has a stepped shape formed by an upper portion and a lower portion, and a surface of the upper portion is the first terminal surface of the contact portion, and a surface of the lower portion is provided The second terminal surface of the non-contact portion. According to this configuration, the area of the terminal surface to be soldered can be secured to a wide extent. Further, it is also possible to easily press the end portion of the wire without properly positioning the end portion of the coil at the time of pressure bonding.
在本發明中，較佳為上述基體的上述第1表面，具有與上述第1端子部的階差形狀配合的階差面。根據該構成，能夠使基體的表面沿著端子金屬配件的階差面，從而能夠確實地支撐端子金屬配件的整體。 In the invention, it is preferable that the first surface of the base body has a step surface that matches a step shape of the first terminal portion. According to this configuration, the surface of the base body can be along the step surface of the terminal fitting, and the entire terminal metal fitting can be reliably supported.
在本發明中，較佳為上述基體具有與上述第1表面正交的第2表面，上述端子金屬配件為L字型且進一步具有位於上述基體的上述第2表面上的第2端子部，上述第2端子部係黏接固定於上述第2表面，上述第1端子部未黏接固定於上述第1表面。根據該構成，能夠消除因黏接劑塗佈量的不均所引起端子金屬配件的高度不均。 In the above aspect of the invention, preferably, the base body has a second surface orthogonal to the first surface, the terminal metal fitting has an L-shape and further has a second terminal portion on the second surface of the base body, wherein The second terminal portion is adhesively fixed to the second surface, and the first terminal portion is not bonded and fixed to the first surface. According to this configuration, it is possible to eliminate height unevenness of the terminal metal fitting due to unevenness in the amount of application of the adhesive.
在本發明中，較佳為至少在設置有上述非接觸部的部位上的上述第1端子部的背面與上述基體的上述第1表面之間設置有間隙。根據該構成，在切斷線圈的終端部時，可利用端子金屬配件的彈力而賦予切斷時的緩衝，藉此能夠確實地切斷線圈的終端部。 In the invention, it is preferable that a gap is provided between the back surface of the first terminal portion and the first surface of the base body at least at a portion where the non-contact portion is provided. According to this configuration, when the end portion of the coil is cut, the cushioning at the time of cutting can be given by the elastic force of the terminal fitting, whereby the end portion of the coil can be surely cut.
在本發明中，較佳為上述基體為具有捲繞有上述線圈的卷芯部及設置於該卷芯部兩端的一對凸緣部的鼓核心，上述端子金屬配件係設置於上述凸緣部。根據該構成，在使用有鼓核心的表面安裝型的線圈零件中，能夠提高接合有導線的端子面的焊料可濕性，從而能夠提高電氣及機械連接的可靠性。 In the above aspect of the invention, preferably, the base body is a drum core having a winding core portion around the coil and a pair of flange portions provided at both ends of the winding core portion, and the terminal metal fitting is provided on the flange portion. . According to this configuration, in the surface mount type coil component using the drum core, the solder wettability of the terminal surface to which the lead wire is bonded can be improved, and the reliability of electrical and mechanical connection can be improved.
根據本發明，能夠確實地切斷並容易地去除熱壓接後導線的不要部分。因此，能夠實現具有焊料可濕性佳的端子面的線圈零件。 According to the present invention, it is possible to surely cut off and easily remove unnecessary portions of the wire after thermocompression bonding. Therefore, it is possible to realize a coil component having a terminal surface with good solder wettability.
以下，一邊參照附圖，一邊對本發明的較佳實施形態進行詳細的說明。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
圖1是表示本發明第1實施形態的表面安裝型線圈零件的外觀構成的大致立體圖。另外，圖2是圖1的線圈零件的分解立體圖，圖3是表示使圖1的線圈零件處於上下翻轉狀態的大致立體圖。 1 is a schematic perspective view showing an external configuration of a surface mount type coil component according to a first embodiment of the present invention. 2 is an exploded perspective view of the coil component of FIG. 1, and FIG. 3 is a perspective view showing a state in which the coil component of FIG. 1 is turned upside down.
如圖1至圖3所示，該線圈零件1具備鼓核心2、板狀鐵心5、6個端子金屬配件6a~6f、及由捲繞於鼓核心2的導線所構成的線圈7。雖然沒有特別的限定，但是線圈零件1為表面安裝型的脈衝變壓器，其尺寸約為4.5×3.2×2.6mm。 As shown in FIGS. 1 to 3, the coil component 1 includes a drum core 2, a plate-like core 5, six terminal metal fittings 6a to 6f, and a coil 7 composed of a wire wound around the drum core 2. Although not particularly limited, the coil component 1 is a surface mount type pulse transformer having a size of about 4.5 x 3.2 x 2.6 mm.
鼓核心2例如由Ni-Zn(鎳鋅)磁體等的磁性材料所構成，具有捲繞線圈7的卷芯部3、及配置於卷芯部3兩端的一對凸緣部4A、4B。板狀鐵心5也由Ni-Zn鐵氧磁體等的磁性材料所構成，且載置於一對凸緣部4A、4B的上表面，並以黏接劑等固定。 The drum core 2 is made of, for example, a magnetic material such as a Ni-Zn (nickel-zinc) magnet, and has a winding core portion 3 around which the coil 7 is wound, and a pair of flange portions 4A and 4B disposed at both ends of the winding core portion 3. The plate-like core 5 is also made of a magnetic material such as a Ni-Zn ferrite magnet, and is placed on the upper surfaces of the pair of flange portions 4A and 4B, and is fixed by an adhesive or the like.
板狀鐵心5的上表面因為是平坦的平滑面，所以能夠在安裝線圈零件1時，將該平滑面作為吸附面來進行吸附安裝。此外，與凸緣部4A、4B的上表面相黏接的板狀鐵心5的表面，亦以平滑面為佳。藉由使板狀鐵心5的平滑表面與凸緣部4A、4B相抵接，能夠確實地使雙方緊密接合，而能夠形成沒有磁通量洩露的閉合磁路。 Since the upper surface of the plate-shaped core 5 is a flat smooth surface, when the coil component 1 is mounted, the smooth surface can be adsorbed and mounted as an adsorption surface. Further, the surface of the plate-like core 5 which is bonded to the upper surfaces of the flange portions 4A, 4B is preferably a smooth surface. By bringing the smooth surface of the plate-like core 5 into contact with the flange portions 4A and 4B, it is possible to reliably bond both of them to each other, and it is possible to form a closed magnetic path without leakage of magnetic flux.
端子金屬配件6a~6f是從凸緣部4A、4B的底面至外側側 面延伸設置的L字型金屬片。此處，所謂凸緣部的外側側面，是位於與卷芯部3的安裝面相反側的面。這些端子金屬配件6a~6f較佳為從對一片金屬板加工而得的引線架所切出的部分。端子金屬配件6a~6f是藉由以引線架的狀態黏接固定於鼓核心2，再從框架部切斷，而成為獨立的端子。在使用端子金屬配件6a~6f的情況時，與電鍍電極相比，其形成較為容易，在量產時的成本方面也較為有利。此外，能夠提高端子金屬配件6a~6f的安裝時的位置精度。 The terminal metal fittings 6a to 6f are from the bottom surface to the outer side of the flange portions 4A and 4B. An L-shaped metal piece that is extended over the surface. Here, the outer side surface of the flange portion is a surface located on the opposite side to the mounting surface of the winding core portion 3. These terminal metal fittings 6a to 6f are preferably cut out from a lead frame machined from a single metal plate. The terminal metal fittings 6a to 6f are fixed to the drum core 2 by the state of the lead frame, and are cut off from the frame portion to become independent terminals. When the terminal metal fittings 6a to 6f are used, it is easier to form than the plating electrode, and it is also advantageous in terms of cost in mass production. Further, the positional accuracy at the time of mounting the terminal metal fittings 6a to 6f can be improved.
在端子金屬配件6a~6f中，3個端子金屬配件6a、6b、6c係設置於凸緣部4A側，其他3個端子金屬配件6d、6e、6f係設置於凸緣部4B側。而且，在3個端子金屬配件6a、6b、6c中，2個端子金屬配件6a、6b係設置於凸緣部4A的靠右側，端子金屬配件6c係設置於凸緣部4A的靠左側，在兩者之間設置有一定的絕緣間隔。與此相同地，3個端子金屬配件6d、6e、6f中，2個端子金屬配件6d、6e係設置於凸緣部4B的靠右側，端子金屬配件6f係設置於凸緣部4B的靠左側，在兩者之間設置有一定的絕緣間隔。 Among the terminal fittings 6a to 6f, the three terminal fittings 6a, 6b, and 6c are provided on the flange portion 4A side, and the other three terminal fittings 6d, 6e, and 6f are provided on the flange portion 4B side. Further, of the three terminal metal fittings 6a, 6b, and 6c, the two terminal fittings 6a and 6b are provided on the right side of the flange portion 4A, and the terminal fitting 6c is provided on the left side of the flange portion 4A. There is a certain insulation interval between the two. Similarly, among the three terminal metal fittings 6d, 6e, and 6f, the two terminal metal fittings 6d and 6e are provided on the right side of the flange portion 4B, and the terminal metal fittings 6f are provided on the left side of the flange portion 4B. There is a certain insulation interval between the two.
如圖2所示，L字型的端子金屬配件6a~6f分別具有接觸於凸緣部4A、4B的底面(第1表面)的底面部TB(第1端子部)、及接觸於凸緣部4A、4B的外側側面(第2表面)的側面部TS(第2端子部)。而且，如圖3所示，線圈7的終端部係熱壓接於端子金屬配件6a~6f的底面部TB的表面。 As shown in FIG. 2, the L-shaped terminal metal fittings 6a to 6f have bottom surface portions T B (first terminal portions) that are in contact with the bottom surfaces (first surfaces) of the flange portions 4A and 4B, and are in contact with the flanges. Side surface portions T S (second terminal portions) of the outer side surfaces (second surface) of the portions 4A and 4B. Further, as shown in FIG. 3, the end portion of the coil 7 is thermocompression-bonded to the surface of the bottom surface portion T B of the terminal metal fittings 6a to 6f.
圖4是表示鼓核心2的構成的大致立體圖，且是表示安裝有端子金屬配件6a~6f的狀態的圖。另外，圖5是表示沒有端子金屬配件6a~6f的狀態的鼓核心2，且表示底面朝向上方的翻轉狀態。此外，圖6(a)是從底面側觀察凸緣部4A的大致俯視圖，圖6(b)是從外側側面側觀察凸緣部4A的大致俯視圖。 4 is a schematic perspective view showing a configuration of the drum core 2, and is a view showing a state in which the terminal fittings 6a to 6f are attached. In addition, FIG. 5 shows the drum core 2 in a state in which the terminal metal fittings 6a to 6f are not provided, and shows the inverted state in which the bottom surface faces upward. In addition, FIG. 6(a) is a plan view of the flange portion 4A as seen from the bottom surface side, and FIG. 6(b) is a plan view of the flange portion 4A as seen from the outer side surface side.
如圖4及圖5所示，鼓核心2是由卷芯部3和配置於卷芯部3兩端的一對凸緣部4A、4B所構成。鼓核心2在俯視圖中為旋轉對稱的形狀，凸緣部4A、4B具有相同的形狀。因此，在圖6中僅表示凸緣部4A，省略凸緣部4B的圖示。 As shown in FIGS. 4 and 5, the drum core 2 is composed of a winding core portion 3 and a pair of flange portions 4A, 4B disposed at both ends of the winding core portion 3. The drum core 2 has a rotationally symmetrical shape in plan view, and the flange portions 4A, 4B have the same shape. Therefore, only the flange portion 4A is shown in Fig. 6, and the illustration of the flange portion 4B is omitted.
如圖4所示，凸緣部4A、4B的上表面ST為平滑的平坦面，藉此能夠提高與板狀鐵心5的緊密接合性。如上所述，在凸緣部4A、4B的上表面ST之間架設有板狀鐵心5，藉此能夠形成實質的閉合磁路。 As shown in FIG. 4, the upper surface S T of the flange portions 4A, 4B is a smooth flat surface, whereby the adhesion to the plate core 5 can be improved. As described above, the plate-like core 5 is placed between the upper surfaces S T of the flange portions 4A, 4B, whereby a substantially closed magnetic circuit can be formed.
如圖4、圖5及圖6(b)所示，凸緣部4A、4B的外側側面SS，形成為端子金屬配件6a~6f的設置區域較低，其以外的區域較高的階差面。端子金屬配件6a~6f係設置於外側側面SS的下段面SS1，外側側面SS的上段面SS2的高度是以成為與端子金屬配件6a~6f的上表面大致齊平的方式所形成。在圖6(b)中，繪有影線的區域為上段面SS2，未繪有影線的區域為下段面SS1。 As shown in Fig. 4, Fig. 5, and Fig. 6(b), the outer side surfaces S S of the flange portions 4A, 4B are formed such that the installation areas of the terminal fittings 6a to 6f are lower, and the other regions are higher in the step. surface. Terminal metal fitting 6a ~ 6f lines disposed on the lower surface S S1 outer side surface S S of the height of the upper surface S S2 of the outer side surface S S of is formed on the surface becomes a terminal metal fitting 6a ~ 6f substantially flush manner . In Fig. 6(b), the hatched area is the upper stage S S2 , and the unhatched area is the lower stage S S1 .
如圖5及圖6(a)所示，凸緣部4A、4B的底面SB，形成為 端子金屬配件6a~6f的基端部側的設置區域較高，其以外的區域較低的階差面。亦即，在端子金屬配件6a~6f的設置區域，設置有上段面SB2和下段面SB1，端子金屬配件6a~6f的非設置區域的大部分為下段面SB1。而且，端子金屬配件6a~6f的底面部TB的基端部側係設置於凸緣部4A、4B的底面SB的上段面SB2，端子金屬配件6a~6f的底面部TB的轉角部側係設置於凸緣部4A、4B的底面SB的下段面SB1。在圖6(a)中，繪有影線的區域為上段面SB2，未繪有影線的區域為下段面SB1。 As shown in Fig. 5 and Fig. 6(a), the bottom surfaces S B of the flange portions 4A and 4B are formed such that the installation regions on the base end side of the terminal fittings 6a to 6f are higher, and the other regions are lower. Bad face. That is, the upper surface S B2 and the lower surface S B1 are provided in the installation region of the terminal metal fittings 6a to 6f, and most of the non-installation regions of the terminal metal fittings 6a to 6f are the lower surface S B1 . Further, the base end portions of the bottom surface portions T B of the terminal metal fittings 6a to 6f are provided on the upper surface S B2 of the bottom surface S B of the flange portions 4A and 4B, and the corners of the bottom surface portion T B of the terminal metal fittings 6a to 6f. The side portions are provided on the lower surface S B1 of the bottom surface S B of the flange portions 4A, 4B. In Fig. 6(a), the area where the hatching is drawn is the upper surface S B2 , and the area where the hatching is not drawn is the lower surface S B1 .
圖7(a)及(b)是表示分別安裝於凸緣部4A、4B的端子金屬配件6a~6f的形狀的大致側面剖面圖，(a)為包含鼓核心整體的大致側面圖，(b)為凸緣部4A側的端子金屬配件的局部放大圖。再者，凸緣部4B側的構成與凸緣部4A側相同。 7(a) and 7(b) are schematic side cross-sectional views showing the shapes of the terminal fittings 6a to 6f attached to the flange portions 4A and 4B, respectively, wherein (a) is a schematic side view including the entire drum core, (b) A partial enlarged view of the terminal fitting on the side of the flange portion 4A. Further, the configuration on the side of the flange portion 4B is the same as the side on the flange portion 4A.
如圖7(a)及(b)所示，L字型的端子金屬配件6a~6f的底面部TB及側面部TS，分別接觸於凸緣部4A、4B的底面SB(第1表面)以及外側側面SS(第2表面)。此處，雖然側面部TS是由黏接劑11黏接固定於凸緣部的外側側面SS，但是底面部TB未被黏接固定於凸緣部的底面SB。根據該構成，能夠消除因黏接劑塗佈量的不均所引起的端子金屬配件6a~6f的底面部TB的高度不均。 As shown in FIGS. 7(a) and 7(b), the bottom surface portion T B and the side surface portion T S of the L-shaped terminal metal fittings 6a to 6f are in contact with the bottom surface S B of the flange portions 4A and 4B, respectively (first Surface) and outer side surface S S (second surface). Here, although the side surface portion T S is adhered and fixed to the outer side surface S S of the flange portion by the adhesive 11 , the bottom surface portion T B is not adhered and fixed to the bottom surface S B of the flange portion. According to this configuration, it is possible to eliminate height unevenness of the bottom surface portion T B of the terminal metal fittings 6a to 6f due to unevenness in the amount of application of the adhesive.
接合有線圈7的終端部的端子金屬配件6a~6f的底面部TB具有階差形狀。而且，凸緣部4A、4B的底面SB的階差 面係成為配合於該端子金屬配件6a~6f的階差形狀的形狀。 The bottom surface portion T B of the terminal fittings 6a to 6f to which the end portion of the coil 7 is joined has a step shape. Further, the step surface of the bottom surface S B of the flange portions 4A and 4B has a shape that fits in the step shape of the terminal metal fittings 6a to 6f.
端子金屬配件6a~6f的底面部TB，是由設置於凸緣部4A、4B的靠內側側面(靠近卷芯部3)的上段部TB1、以及設置於凸緣部4A、4B的靠外側側面SS的下段部TB2所構成。此處，上段部TB1為提供與線圈7的終端部接觸的端子面(上段面SU)的部位(接觸部)，下段部TB2為提供不與線圈7的終端部接觸的端子面(下段面SL)的部位(非接觸部)。亦即，下段部TB2在與上段面SU相同的平面上不具有端子面。 The bottom surface portion T B of the terminal metal fittings 6a to 6f is provided by the upper portion T B1 provided on the inner side surface (near the winding core portion 3) of the flange portions 4A, 4B, and the flange portions 4A, 4B. The lower portion T B2 of the outer side surface S S is formed. Here, the upper stage portion T B1 is a portion (contact portion) that provides a terminal surface (upper surface surface S U ) that is in contact with the end portion of the coil 7 , and the lower portion portion T B2 is a terminal surface that provides contact with the terminal portion of the coil 7 ( The portion (non-contact portion) of the lower surface S L ). That is, the lower portion T B2 does not have a terminal surface on the same plane as the upper surface S U .
端子金屬配件6a~6f的底面部TB的上段面SU，提供在熱壓接時承受對線圈7的終端部的壓接力的「壓接面」。另外，端子金屬配件6a~6f的底面部TB的下段面SL，提供釋放對線圈7的終端部的壓接力的「非壓接面」。藉由端子金屬配件6a~6f的底面部TB具有由上段面SU及下段面SL所構成的階差面，能夠避免在線圈7的終端部遍及端子金屬配件6a~6f的底面部的該線圈的延伸方向的整個寬度進行熱壓接。因此，能夠較寬地確保未形成有因導線與鍍膜的反應而產生的合金層的區域，從而能夠確實地且容易地進行導線的切斷去除。 The upper surface S U of the bottom surface portion T B of the terminal metal fittings 6a to 6f is provided with a "pressure contact surface" that receives the pressure contact force to the end portion of the coil 7 during thermocompression bonding. Further, the lower surface S L of the bottom surface portion T B of the terminal metal fittings 6a to 6f provides a "non-crimping surface" for releasing the pressure contact force to the end portion of the coil 7. The bottom surface portion T B of the terminal metal fittings 6a to 6f has a step surface composed of the upper surface S U and the lower surface surface S L , so that the end portion of the coil 7 can be prevented from passing over the bottom surface portion of the terminal metal fittings 6a to 6f. The entire width of the coil in the extending direction is thermocompression bonded. Therefore, it is possible to ensure a region where the alloy layer generated by the reaction between the wire and the plating film is not formed, and it is possible to reliably and easily cut and remove the wire.
在端子金屬配件6a~6f的底面部TB的下段部TB2的背面與凸緣部4A、4B的下段面SB1側的表面之間，較佳為設置有間隙d1。在設置有如上述的間隙d1的情況下，在熱壓接後進行切斷線圈7的終端部的情形時，對於刀具(cutter)，能 夠賦予由端子金屬配件6a~6f的彈力所產生的緩衝。因此，能夠確實地切斷線圈7的終端部。 It is preferable to provide a gap d 1 between the back surface of the lower portion T B2 of the bottom surface portion T B of the terminal metal fittings 6a to 6f and the surface of the lower surface S B1 side of the flange portions 4A and 4B. When the gap d 1 as described above is provided, when the end portion of the coil 7 is cut after the thermocompression bonding, the cutter can be given the elastic force generated by the terminal fittings 6a to 6f. buffer. Therefore, the end portion of the coil 7 can be surely cut.
在圖7(b)中，雖然僅側面部TS是由黏接劑11進行黏接固定，但也可為黏接固定側面部TS和底面部TB的下段部TB2(間隙d1的部分)的2個部位。在該情況下，上段部TB1不進行黏接。根據該構成，能夠一方面防止端子金屬配件6a~6f的底面部TB的高度不均，且能夠進一步提高其黏接強度。 In FIG. 7(b), although only the side surface portion T S is bonded and fixed by the adhesive 11, the lower portion T B2 of the side surface portion T S and the bottom surface portion T B may be adhered and fixed (the gap d 1 ) The part of the part). In this case, the upper portion T B1 is not bonded. According to this configuration, it is possible to prevent the height unevenness of the bottom surface portion T B of the terminal metal fittings 6a to 6f, and to further improve the bonding strength.
圖8(a)至(c)是用以說明線圈7的終端部的熱壓接步驟的示意圖。 8(a) to (c) are schematic views for explaining a thermocompression bonding step of the end portion of the coil 7.
如圖8(a)所示，在熱壓接步驟中，將捲繞於鼓核心2的卷芯部3的線圈7的終端部配線於所對應的端子金屬配件6a~6f上。線圈7的終端部係藉由通過端子金屬配件6a~6f而拉出至凸緣部4A、4B的外側，與凸緣部4A、4B的底面大致平行地延伸。 As shown in Fig. 8(a), in the thermocompression bonding step, the end portions of the coils 7 wound around the core portion 3 of the drum core 2 are wired to the corresponding terminal fittings 6a to 6f. The end portions of the coil 7 are pulled out to the outside of the flange portions 4A and 4B by the terminal fittings 6a to 6f, and extend substantially parallel to the bottom surfaces of the flange portions 4A and 4B.
接著，如圖8(b)所示，使用加熱器晶片12將線圈7的終端部熱壓接於端子金屬配件6a~6f的表面。位於端子金屬配件6a~6f的底面部TB的上段面SU上方的導線部分，係夾入至加熱器晶片12與上段面SU之間，並利用高溫的加熱器晶片12的壓接力壓抵於端子面，使導線的線材(Cu)和端子面的鍍膜(Ni及Sn)合金化而獲得充分的接合力。 Next, as shown in FIG. 8(b), the end portion of the coil 7 is thermocompression-bonded to the surfaces of the terminal fittings 6a to 6f using the heater wafer 12. The wire portion located above the upper surface S U of the bottom surface portion T B of the terminal metal fittings 6a to 6f is sandwiched between the heater wafer 12 and the upper surface S U and pressed by the crimping force of the high temperature heater wafer 12 The wire (Cu) of the wire and the plating film (Ni and Sn) of the terminal surface are alloyed to obtain a sufficient bonding force against the terminal surface.
另一方面，位於端子金屬配件6a~6f的底面部TB的下段 面SL上方的導線部分，係避入至加熱器晶片12與下段面SL之間的間隙d2，而不被賦予如上段面SU般充分的壓接力。因此，能夠避免對該導線部分的端子面的熱壓接。 On the other hand, the portion of the wire located above the lower surface S L of the bottom surface portion T B of the terminal metal fittings 6a to 6f is prevented from being drawn into the gap d 2 between the heater wafer 12 and the lower surface S L without being given As above, S U is as full as the crimping force. Therefore, it is possible to avoid thermocompression bonding of the terminal faces of the wire portions.
如圖8(c)所示，如上述熱壓接於端子金屬配件6a~6f上的線圈7的終端部，可藉由刀具13切斷而整理其長度。此時，線圈7的切斷位置在端子金屬配件6a~6f的階差附近。在線圈7的終端部的切斷時，未被熱壓接的導線的導線剩餘部分7r並未被黏著於端子面，或者即便在熱壓接時因熔融的鍍膜而被黏著於端子面，由於其黏著力較弱，所以只要施加少許的力即可將其剝離。其結果，在端子金屬配件的底面部TB的表面中，僅於上段面SU被熱壓接有導線，而在下段面SL上成為沒有導線的狀態。 As shown in Fig. 8(c), the end portions of the coils 7 which are thermocompression-bonded to the terminal fittings 6a to 6f are cut by the cutter 13 to lengthen them. At this time, the cutting position of the coil 7 is near the step of the terminal fittings 6a to 6f. When the terminal portion of the coil 7 is cut, the remaining portion 7r of the wire which is not thermocompression-bonded is not adhered to the terminal surface, or is adhered to the terminal surface by the molten plating film even during thermocompression bonding, The adhesion is weak, so it can be peeled off by applying a little force. As a result, the surface of the bottom portion of the terminal metal fitting T B, only to the upper surface S U has been thermocompression bonding wire, and a state has no wires on the lower step surface S L.
在上段面SU，導線的周圍雖然因合金化而變成焊料可濕性較差的區域，但是在其周圍也進一步存在有未被合金化的區域，該區域有助於進行焊料連接。另一方面，在下段面SL不存在導線，而成為焊料可濕性佳的區域。下段面SL為接觸於端子金屬配件的側面部TS的部分，且在表面安裝時，與側面部TS均為有助於焊料圓角形成的部分。因此，在對如此的線圈零件1進行表面安裝的情況時，能夠提高端子金屬配件6a~6f的焊料可濕性，從而能夠從端子金屬配件的下段部TB2到側面部TS確實地形成焊料圓角。因此，能夠提高線圈零件1的電氣及機械連接的可靠性。 In the upper surface S U , although the periphery of the wire becomes a region where the solder wettability is poor due to alloying, there is a region which is not alloyed around the wire, which contributes to the solder connection. On the other hand, there is no wire in the lower surface SL , and it becomes a region where solder wettability is good. The lower surface S L is a portion that contacts the side surface portion T S of the terminal metal fitting, and both surfaces and the side surface portion T S are portions that contribute to the formation of the solder fillet when the surface is mounted. Therefore, when the coil component 1 is surface-mounted, the solder wettability of the terminal fittings 6a to 6f can be improved, and the solder can be surely formed from the lower portion T B2 of the terminal fitting to the side portion T S . Rounded corners. Therefore, the reliability of the electrical and mechanical connection of the coil component 1 can be improved.
如以上所說明，本實施形態的線圈零件1，因為在接合有線圈7的終端部的端子金屬配件6a~6f的端子面，設置有避免與線圈7的前端部接觸的階差面，所以能夠避免導線的前端部被熱壓接於端子面。因此，能夠確實地且容易地進行熱壓接後導線的切斷去除。 As described above, the coil component 1 of the present embodiment is provided with a step surface that avoids contact with the tip end portion of the coil 7 at the terminal surface of the terminal fittings 6a to 6f to which the end portion of the coil 7 is joined. Avoid that the front end of the wire is thermocompression bonded to the terminal face. Therefore, it is possible to reliably and easily perform the cutting and removal of the wire after the thermocompression bonding.
另外，在本實施形態中，與導線的終端部的非接觸部，因為是低於接觸部的電極面，所以能夠較寬地確保端子金屬配件的電極面。因此，對於線圈的終端部的定位並不需要較高的精度，能夠容易地熱壓接導線的終端部。 Further, in the present embodiment, since the non-contact portion of the terminal portion of the lead wire is lower than the electrode surface of the contact portion, the electrode surface of the terminal metal fitting can be secured widely. Therefore, the positioning of the end portion of the coil does not require high precision, and the end portion of the wire can be easily thermocompression-bonded.
此外，在本實施形態中，因為在安裝有端子金屬配件6a~6f的鼓核心2的凸緣部4A、4B的底面SB設置有階差面，所以能夠提高端子金屬配件與其安裝面的緊密接合性，從而確實地支撐端子金屬配件。 Further, in the present embodiment, since the step surface is provided on the bottom surface S B of the flange portions 4A and 4B of the drum core 2 to which the terminal metal fittings 6a to 6f are attached, the terminal metal fitting and the mounting surface thereof can be improved. Bonding to positively support the terminal fittings.
本發明並不限定於以上的實施形態，在不脫離本發明宗旨的範圍內可以加入各種變更，而這些變更當然也包含於本發明中。 The present invention is not limited to the above embodiments, and various modifications can be added without departing from the spirit and scope of the invention, and these modifications are of course included in the invention.
例如，在上述實施形態中，作為捲繞線圈的基體，雖然使用具有捲繞線圈的卷芯部和設置於其兩端的一對凸緣部的橫型鼓核心，但是也可以使用所謂縱型的鼓核心。另外，端子金屬配件的安裝個數並沒有特別的限定。此外，在上述實施形態中，雖然端子金屬配件係直接黏接於鼓核心的表面，但是也可以將鼓核心收容於樹脂殼體(筒管)內，而將端子金 屬配件安裝於該樹脂殼體的表面。 For example, in the above-described embodiment, as the base body for winding the coil, a horizontal drum core having a winding core portion for winding a coil and a pair of flange portions provided at both ends thereof is used, but a so-called vertical type may be used. Drum core. In addition, the number of mounting of the terminal metal fittings is not particularly limited. Further, in the above embodiment, the terminal metal fitting is directly bonded to the surface of the drum core, but the drum core may be housed in the resin case (bobbin), and the terminal gold may be used. The accessory is mounted on the surface of the resin case.
另外，在上述實施形態中，雖然非接觸部係由階差面所實現，但是也可以是將位於導線終端部的延長線上的端子金屬配件的一部分進行沖切加工後的切口部。在該情況下，由於會產生相當於端子金屬配件的壁厚的階差，所以能夠避免導線的前端部被熱壓接於端子面。因此，能夠確實地且容易地進行熱壓接後導線的切斷去除。 Further, in the above-described embodiment, the non-contact portion is realized by the step surface, but may be a notch portion obtained by punching a part of the terminal metal fitting located on the extension line of the wire end portion. In this case, since a step corresponding to the wall thickness of the terminal fitting is generated, it is possible to prevent the tip end portion of the lead wire from being thermocompression bonded to the terminal surface. Therefore, it is possible to reliably and easily perform the cutting and removal of the wire after the thermocompression bonding.
1‧‧‧線圈零件 1‧‧‧ coil parts
2‧‧‧鼓核心 2‧‧‧ drum core
3‧‧‧卷芯部 3‧‧‧core core
4A、4B‧‧‧凸緣部 4A, 4B‧‧‧Flange
5‧‧‧板狀鐵心 5‧‧‧ slab core
6a~6f‧‧‧端子金屬配件 6a~6f‧‧‧Terminal metal fittings
7‧‧‧線圈 7‧‧‧ coil
7r‧‧‧導線剩餘部分 7r‧‧‧The remainder of the wire
11‧‧‧黏接劑 11‧‧‧Adhesive
12‧‧‧加熱器晶片 12‧‧‧ heater wafer
13‧‧‧刀具 13‧‧‧Tools
20‧‧‧導線 20‧‧‧ wire
20e‧‧‧前端部 20e‧‧‧ front end
21‧‧‧端子金屬配件 21‧‧‧Terminal metal fittings
d1‧‧‧間隙 d 1 ‧‧‧ gap
d2‧‧‧間隙 d 2 ‧‧‧ gap
SB‧‧‧凸緣部的底面 S B ‧‧‧Bottom of the flange
SB1‧‧‧凸緣部的底面的下段面 S B1 ‧‧‧The lower surface of the bottom of the flange
SB2‧‧‧凸緣部的底面的上段面 S B2 ‧‧‧ Upper surface of the bottom of the flange
SL‧‧‧端子金屬配件的底面部的下段面 The lower surface of the bottom part of the S L ‧‧‧ terminal metal fitting
SS‧‧‧凸緣部的外側側面 S S ‧‧‧Outside side of the flange
SS1‧‧‧凸緣部的外側側面的下段面 S S1 ‧‧‧The lower side of the outer side of the flange
SS2‧‧‧凸緣部的外側側面的上段面 S S2 ‧‧‧ Upper side of the outer side of the flange
ST‧‧‧凸緣部的上表面 S T ‧‧‧ upper surface of the flange
SU‧‧‧端子金屬配件的底面部的上段面 Upper surface of the bottom part of the S U ‧‧‧ terminal metal fitting
TB‧‧‧端子金屬配件的底面部 The bottom part of the T B ‧‧‧ terminal metal fitting
TB1‧‧‧端子金屬配件的底面部的上段部 T B1 ‧‧‧ Upper part of the bottom part of the terminal metal fitting
TB2‧‧‧端子金屬配件的底面部的下段部 T B2 ‧‧‧ Lower part of the bottom part of the terminal metal fitting
TS‧‧‧端子金屬配件的側面部 Side part of T S ‧‧‧ terminal metal fittings
圖1是表示本發明第1實施形態的線圈零件的外觀構成的大致立體圖。 Fig. 1 is a schematic perspective view showing an external configuration of a coil component according to a first embodiment of the present invention.
圖2是圖1的線圈零件的分解立體圖。 Fig. 2 is an exploded perspective view of the coil component of Fig. 1.
圖3是表示使圖1的線圈零件處於上下翻轉狀態的大致立體圖。 Fig. 3 is a schematic perspective view showing a state in which the coil component of Fig. 1 is turned upside down.
圖4是表示鼓核心2的構成的大致立體圖，且為表示安裝有端子金屬配件6a~6f的狀態的圖。 4 is a schematic perspective view showing a configuration of the drum core 2, and is a view showing a state in which the terminal fittings 6a to 6f are attached.
圖5是表示沒有端子金屬配件6a~6f的狀態的鼓核心2，並表示底面朝向上方的翻轉狀態。 Fig. 5 shows the drum core 2 in a state in which the terminal fittings 6a to 6f are not provided, and shows a state in which the bottom surface is turned upward.
圖6是安裝有端子金屬配件的凸緣部的構成，(a)是從底面側觀察凸緣部的大致俯視圖，(b)是從外側側面側觀察凸緣部的大致俯視圖。 6 is a view showing a configuration of a flange portion to which a terminal metal fitting is attached, (a) is a plan view showing a flange portion as viewed from a bottom surface side, and (b) is a plan view showing a flange portion as viewed from an outer side surface side.
圖7(a)及(b)是表示分別安裝於凸緣部4A、4B的端子金屬配件的形狀的大致側面剖面圖。 7(a) and 7(b) are schematic side cross-sectional views showing the shape of the terminal fittings attached to the flange portions 4A and 4B, respectively.
圖8(a)至(c)是用以說明使用加熱器晶片的導線的熱壓接步驟的示意圖。 8(a) to (c) are schematic views for explaining a thermocompression bonding step of a wire using a heater wafer.
圖9(a)及(b)是用於對現有的線圈零件進行說明的示意圖。 9(a) and 9(b) are schematic views for explaining a conventional coil component.
3‧‧‧卷芯部 3‧‧‧core core
4A‧‧‧凸緣部 4A‧‧‧Flange
4B‧‧‧凸緣部 4B‧‧‧Flange
6a~6f‧‧‧端子金屬配件 6a~6f‧‧‧Terminal metal fittings
7‧‧‧線圈 7‧‧‧ coil
11‧‧‧黏接劑 11‧‧‧Adhesive
d1‧‧‧間隙 d 1 ‧‧‧ gap
SB‧‧‧凸緣部的底面 S B ‧‧‧Bottom of the flange
SB1‧‧‧凸緣部的底面的下段面 S B1 ‧‧‧The lower surface of the bottom of the flange
SB2‧‧‧凸緣部的底面的上段面 S B2 ‧‧‧ Upper surface of the bottom of the flange
SL‧‧‧端子金屬配件的底面部的下段面 The lower surface of the bottom part of the S L ‧‧‧ terminal metal fitting
SS‧‧‧凸緣部的外側側面 S S ‧‧‧Outside side of the flange
SU‧‧‧端子金屬配件的底面部的上段面 Upper surface of the bottom part of the S U ‧‧‧ terminal metal fitting
TB‧‧‧端子金屬配件的底面部 The bottom part of the T B ‧‧‧ terminal metal fitting
TB1‧‧‧端子金屬配件的底面部的上段部 T B1 ‧‧‧ Upper part of the bottom part of the terminal metal fitting
TB2‧‧‧端子金屬配件的底面部的下段部 T B2 ‧‧‧ Lower part of the bottom part of the terminal metal fitting
TS‧‧‧端子金屬配件的側面部 Side part of T S ‧‧‧ terminal metal fittings
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012056249A JP5673585B2 (en) | 2012-03-13 | 2012-03-13 | Coil parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201342403A true TW201342403A (en) | 2013-10-16 |
| TWI462132B TWI462132B (en) | 2014-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101146834A TWI462132B (en) | 2012-03-13 | 2012-12-12 | Coil component |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5673585B2 (en) |
| CN (2) | CN203242470U (en) |
| TW (1) | TWI462132B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941039A (en) * | 2016-01-05 | 2017-07-11 | Tdk株式会社 | Coil component and the circuit substrate for possessing the coil component |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5673585B2 (en) * | 2012-03-13 | 2015-02-18 | Tdk株式会社 | Coil parts |
| JP5811139B2 (en) * | 2012-10-16 | 2015-11-11 | Tdk株式会社 | Coil parts |
| JP6303341B2 (en) * | 2013-09-03 | 2018-04-04 | Tdk株式会社 | Coil parts |
| JP6406173B2 (en) * | 2015-02-12 | 2018-10-17 | 株式会社村田製作所 | Coil parts |
| JP6554947B2 (en) * | 2015-07-06 | 2019-08-07 | Tdk株式会社 | Coil component and manufacturing method thereof |
| JP2017092349A (en) | 2015-11-13 | 2017-05-25 | Tdk株式会社 | Coil device |
| JP6589594B2 (en) * | 2015-11-20 | 2019-10-16 | Tdk株式会社 | Coil device |
| JP6465068B2 (en) * | 2016-04-28 | 2019-02-06 | 株式会社村田製作所 | Coil parts |
| JP6797676B2 (en) * | 2016-05-31 | 2020-12-09 | 太陽誘電株式会社 | Coil parts |
| JP6565807B2 (en) * | 2016-06-29 | 2019-08-28 | 株式会社村田製作所 | Coil parts |
| JP6743659B2 (en) * | 2016-11-09 | 2020-08-19 | Tdk株式会社 | Coil device |
| JP6784266B2 (en) * | 2018-01-30 | 2020-11-11 | 株式会社村田製作所 | Coil parts and manufacturing method of coil parts |
| JP7450331B2 (en) * | 2018-10-03 | 2024-03-15 | Tdk株式会社 | Coil devices and pulse transformers |
| JP7103254B2 (en) | 2019-02-07 | 2022-07-20 | 株式会社村田製作所 | Coil parts |
| JP7381257B2 (en) * | 2019-08-30 | 2023-11-15 | 太陽誘電株式会社 | Coil parts, electronic equipment, and manufacturing method of coil parts |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08279416A (en) * | 1995-04-05 | 1996-10-22 | Fuji Elelctrochem Co Ltd | Core for chip inductor |
| JP3450140B2 (en) * | 1996-12-26 | 2003-09-22 | 京セラ株式会社 | Chip inductor |
| JP3395764B2 (en) * | 2000-07-17 | 2003-04-14 | 株式会社村田製作所 | Chip type common mode choke coil |
| JP2003022916A (en) * | 2001-05-02 | 2003-01-24 | Taiyo Yuden Co Ltd | Coil component and method for manufacturing coil component |
| JP2003188018A (en) * | 2001-12-17 | 2003-07-04 | Minebea Co Ltd | Wound type common-mode chock coil |
| JP2004228361A (en) * | 2003-01-23 | 2004-08-12 | Murata Mfg Co Ltd | Chip coil |
| JP3996145B2 (en) * | 2004-05-28 | 2007-10-24 | Ｔｄｋ株式会社 | Coil parts |
| JP2009117627A (en) * | 2007-11-07 | 2009-05-28 | Tdk Corp | Surface-mounted type coil component |
| JP5141659B2 (en) * | 2009-10-09 | 2013-02-13 | Ｔｄｋ株式会社 | Coil component and manufacturing method thereof |
| JP5120373B2 (en) * | 2009-12-28 | 2013-01-16 | Ｔｄｋ株式会社 | Coil parts |
| JP5223884B2 (en) * | 2010-06-01 | 2013-06-26 | Ｔｄｋ株式会社 | Coil parts |
| JP5673585B2 (en) * | 2012-03-13 | 2015-02-18 | Tdk株式会社 | Coil parts |
-
2012
- 2012-03-13 JP JP2012056249A patent/JP5673585B2/en active Active
- 2012-12-12 TW TW101146834A patent/TWI462132B/en active
-
2013
- 2013-03-13 CN CN 201320113160 patent/CN203242470U/en not_active Withdrawn - After Issue
- 2013-03-13 CN CN201310080027.1A patent/CN103310957B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941039A (en) * | 2016-01-05 | 2017-07-11 | Tdk株式会社 | Coil component and the circuit substrate for possessing the coil component |
| CN106941039B (en) * | 2016-01-05 | 2018-07-20 | Tdk株式会社 | Coil component and the circuit board for having the coil component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5673585B2 (en) | 2015-02-18 |
| CN103310957A (en) | 2013-09-18 |
| CN103310957B (en) | 2017-04-26 |
| TWI462132B (en) | 2014-11-21 |
| CN203242470U (en) | 2013-10-16 |
| JP2013191694A (en) | 2013-09-26 |
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