WO2020148972A1 - Resistor and method for manufacturing same - Google Patents
Resistor and method for manufacturing same Download PDFInfo
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- WO2020148972A1 WO2020148972A1 PCT/JP2019/043527 JP2019043527W WO2020148972A1 WO 2020148972 A1 WO2020148972 A1 WO 2020148972A1 JP 2019043527 W JP2019043527 W JP 2019043527W WO 2020148972 A1 WO2020148972 A1 WO 2020148972A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01C13/00—Resistors not provided for elsewhere
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
- H01C17/24—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
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- Patent Document 1 A conventional resistor similar to the resistor 500 is disclosed in Patent Document 1, for example.
- the resistor and the manufacturing method thereof according to the present disclosure can suppress deterioration of resistance value accuracy, and particularly for a resistor with high power and low resistance value used for current value detection of various electronic devices. It is useful.
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Abstract
This resistor is provided with a resistive body having a first and second side surface on opposite sides to each other, and a pair of electrodes connected to both end portions of the resistive body. The resistive body is formed with a first trimming groove extending from the first side surface to a first distal end portion, and a second trimming groove extending from the second side surface to a second distal end portion opposing the first distal end portion. The length of the first trimming groove is greater than the length of the second trimming groove. With the resistor, it is possible to achieve higher resistance value accuracy.
Description
本開示は、各種電子機器に使用される抵抗器およびその製造方法に関する。
The present disclosure relates to a resistor used in various electronic devices and a manufacturing method thereof.
図３と図４はそれぞれ従来の抵抗器５００の上面図と断面図である。抵抗器５００は、板状の金属で構成された抵抗体１と、抵抗体１の下面の両端部に形成された一対の電極２と、抵抗体１の上面と一対の電極２間の領域の抵抗体１の下面とを被覆する保護膜４を備える。抵抗値を調整するために２つのトリミング溝３ａ、３ｂが抵抗体１に形成されている。図３では保護膜４を省いている。
3 and 4 are a top view and a cross-sectional view of a conventional resistor 500, respectively. The resistor 500 includes a resistor 1 made of a plate-shaped metal, a pair of electrodes 2 formed on both ends of the lower surface of the resistor 1, and a region between the upper surface of the resistor 1 and the pair of electrodes 2. The protective film 4 covering the lower surface of the resistor 1 is provided. Two trimming grooves 3a and 3b are formed in the resistor 1 in order to adjust the resistance value. In FIG. 3, the protective film 4 is omitted.
また、２つのトリミング溝３ａ、３ｂは、抵抗体１の互いに対向する側面１ａ、１ｂにそれぞれ形成されている。トリミング溝３ａ、３ｂの先端部５０３ａ、５０３ｂが対向していない、これにより、電流が蛇行しながら抵抗体１に流れる。
Further, the two trimming grooves 3a and 3b are formed on the side surfaces 1a and 1b of the resistor 1 which face each other. The tip portions 503a and 503b of the trimming grooves 3a and 3b are not opposed to each other, whereby a current flows in the resistor 1 while meandering.
抵抗器５００に類似の従来の抵抗器は、例えば、特許文献１にお開示されている。
A conventional resistor similar to the resistor 500 is disclosed in Patent Document 1, for example.
抵抗器は、互いに反対側の第１と第２の側面とを有する抵抗体と、抵抗体の両端部に接続された一対の電極とを備える。抵抗体には、第１の側面から第１の先端部まで延びる第１のトリミング溝と、第２の側面から第１の先端部に対向する第２の先端部まで延びる第２のトリミング溝とが形成されている。第１のトリミング溝の長さは第２のトリミング溝の長さより大きい。
The resistor includes a resistor having first and second side surfaces opposite to each other, and a pair of electrodes connected to both ends of the resistor. The resistor includes a first trimming groove extending from the first side surface to the first tip portion, and a second trimming groove extending from the second side surface to a second tip portion facing the first tip portion. Are formed. The length of the first trimming groove is larger than the length of the second trimming groove.
この抵抗器は、抵抗値の精度を向上させることができる。
-This resistor can improve the accuracy of the resistance value.
図１は実施の形態における抵抗器１００の上面図である。図２は図１に示す抵抗器１００の線ＩＩ－ＩＩにおける断面図である。
FIG. 1 is a top view of the resistor 100 according to the embodiment. FIG. 2 is a sectional view of the resistor 100 shown in FIG. 1 taken along the line II-II.
抵抗器１００は、金属で構成された抵抗体１１と、抵抗体１１の下面１１ｄの両端部１１ｐ、１１ｑにそれぞれ接続された一対の電極１２ａ、１２ｂと、抵抗体１１を被覆する保護膜１５とを備えている。なお、図１では保護膜１５を省略している。電極１２ａ、１２ｂは、抵抗体１１の幅より広い幅を有する。抵抗体１１にはトリミング溝１３、１４が形成されている。保護膜１５は、抵抗体１１の上面１１ｃと、一対の電極１２ａ、１２ｂの間での抵抗体１１の下面１１ｄとを被覆する。抵抗体１１は、上面１１ｃと、下面１１ｄと、上面１１ｃと下面１１ｄとに繋がる側面１１ａと、側面１１ａの反対側で上面１１ｃと下面１１ｄとに繋がる側面１１ｂと、上面１１ｃと下面１１ｄとに繋がる側面１１ｅと、側面１１ｅの反対側で上面１１ｃと下面１１ｄとに繋がる側面１１ｆとを有する板状を有する。
The resistor 100 includes a resistor 11 made of metal, a pair of electrodes 12a and 12b connected to both ends 11p and 11q of a lower surface 11d of the resistor 11, and a protective film 15 covering the resistor 11. Equipped with. The protective film 15 is omitted in FIG. The electrodes 12a and 12b have a width wider than that of the resistor 11. Trimming grooves 13 and 14 are formed in the resistor 11. The protective film 15 covers the upper surface 11c of the resistor 11 and the lower surface 11d of the resistor 11 between the pair of electrodes 12a and 12b. The resistor 11 has an upper surface 11c, a lower surface 11d, a side surface 11a connected to the upper surface 11c and the lower surface 11d, a side surface 11b connected to the upper surface 11c and the lower surface 11d on the opposite side of the side surface 11a, an upper surface 11c and a lower surface 11d. It has a plate shape having a side surface 11e that is connected and a side surface 11f that is connected to the upper surface 11c and the lower surface 11d on the opposite side of the side surface 11e.
トリミング溝１３、１４は抵抗体１１の側面１１ａ、１１ｂにそれぞれ形成されている。トリミング溝１３、１４の先端部１３ａ、１４ａは互いに対向している。
The trimming grooves 13 and 14 are formed on the side surfaces 11a and 11b of the resistor 11, respectively. The tip portions 13a and 14a of the trimming grooves 13 and 14 face each other.
抵抗体１１は、ニクロム、銅ニッケル、マンガニン等からなる金属板で構成されている。また、抵抗体１１は上面視にて矩形状を有する。
The resistor 11 is composed of a metal plate made of nichrome, copper nickel, manganin, or the like. Moreover, the resistor 11 has a rectangular shape in a top view.
抵抗体１１には抵抗値を調整するために、トリミング溝１３、１４は抵抗体１１を貫通するようにレーザ照射や打ち抜きによって形成されている。
In order to adjust the resistance value of the resistor 11, the trimming grooves 13 and 14 are formed by laser irradiation or punching so as to penetrate the resistor 11.
一対の電極１２ａ、１２ｂは、抵抗体１１とは別体の導電体で形成され、抵抗体１１より導電性の高いＣｕ等の金属で構成されている。さらに、一対の電極１２ａ、１２ｂは抵抗体１１の長手方向ＤＸに配列された両端部１１ｐ、１１ｑにおいて下面１１ｄに、溶接、クラッド、印刷等の方法で接続されている。電流は、電極１２ａ、１２ｂ間で抵抗体１１を長手方向ＤＸに流れる。抵抗体１１の側面１１ａ、１１ｂは方向ＤＹで互いに反対側に位置する。
The pair of electrodes 12a and 12b are formed of a conductor different from the resistor 11 and are made of a metal such as Cu having a higher conductivity than the resistor 11. Further, the pair of electrodes 12a, 12b are connected to the lower surface 11d at both ends 11p, 11q arranged in the longitudinal direction DX of the resistor 11 by a method such as welding, clad, or printing. A current flows through the resistor 11 in the longitudinal direction DX between the electrodes 12a and 12b. The side surfaces 11a and 11b of the resistor 11 are located on opposite sides in the direction DY.
また、長手方向ＤＸに直角に交差する方向ＤＹにおいて一対の電極１２ａ、１２ｂの長さは抵抗体１１の長さより大きく、上面視で一対の電極１２ａ、１２ｂの上面の一部は、方向ＤＹに突出するように抵抗体１１から露出している。
Further, the length of the pair of electrodes 12a and 12b is larger than the length of the resistor 11 in the direction DY intersecting the longitudinal direction DX at right angles, and a part of the upper surfaces of the pair of electrodes 12a and 12b in the top view is in the direction DY. It is exposed from the resistor 11 so as to project.
一対の電極１２ａ、１２ｂには電気めっきまたは、ディップにてすずめっき層が施されており、これにより、抵抗器１００は実装用基板に実装される。
The pair of electrodes 12a and 12b is electroplated or is provided with a tin-plated layer by dipping, whereby the resistor 100 is mounted on the mounting substrate.
保護膜１５は、エポキシ樹脂またはシリコン等で構成され、抵抗体１１の上面１１ｃと、一対の電極１２ａ、１２ｂ間での抵抗体１１の下面１１ｄとを被覆する。保護膜１５は、抵抗体１１の側面１１ａ、１１ｂをさらに被覆してもよい。
The protective film 15 is made of epoxy resin or silicon, and covers the upper surface 11c of the resistor 11 and the lower surface 11d of the resistor 11 between the pair of electrodes 12a and 12b. The protective film 15 may further cover the side surfaces 11a and 11b of the resistor 11.
トリミング溝１３は抵抗体１１の側面１１ａに形成され、トリミング溝１４は抵抗体１１の側面１１ｂに形成される。トリミング溝１３、１４は、抵抗体１１の長手方向ＤＸにおける中心部に配置される。
The trimming groove 13 is formed on the side surface 11a of the resistor 11, and the trimming groove 14 is formed on the side surface 11b of the resistor 11. The trimming grooves 13 and 14 are arranged at the center of the resistor 11 in the longitudinal direction DX.
トリミング溝１３の先端部１３ａと、トリミング溝１４の先端部１４ａとは方向ＤＹで互いに対向している。すなわち、トリミング溝１３、１４の先端部１３ａ、１４ｂは方向ＤＹから見て同じ箇所に位置している。
The tip portion 13a of the trimming groove 13 and the tip portion 14a of the trimming groove 14 face each other in the direction DY. That is, the tip ends 13a and 14b of the trimming grooves 13 and 14 are located at the same position when viewed from the direction DY.
トリミング溝１３は側面１１ａから先端部１３ａまで方向ＤＹに沿った方向ＤＹ１に延びる。トリミング溝１４は、抵抗体１１の側面１１ｂから先端部１４ａまで方向ＤＹ１の反対の方向ＤＹ２に延びる。トリミング溝１３の方向ＤＹ１（ＤＹ）の長さはトリミング溝１４の方向ＤＹ２（ＤＹ）の長さより大きい。
The trimming groove 13 extends from the side surface 11a to the tip portion 13a in the direction DY1 along the direction DY. The trimming groove 14 extends in the direction DY2 opposite to the direction DY1 from the side surface 11b of the resistor 11 to the tip portion 14a. The length of the trimming groove 13 in the direction DY1 (DY) is larger than the length of the trimming groove 14 in the direction DY2 (DY).
トリミング溝１３の先端部１３ａとトリミング溝１４の先端部１４ａとはトリミング溝１３が延びる方向ＤＹ１で互いに対向する。トリミング溝１３の先端部１３ａとトリミング溝１４の先端部１４ａとはトリミング溝１４が延びる方向ＤＹ２で互いに対向する。トリミング溝１３とトリミング溝１４とは方向ＤＹ（ＤＹ１、ＤＹ２）に延びる一直線ＬＸに沿って延びる。
The tip portion 13a of the trimming groove 13 and the tip portion 14a of the trimming groove 14 face each other in the direction DY1 in which the trimming groove 13 extends. The tip portion 13a of the trimming groove 13 and the tip portion 14a of the trimming groove 14 face each other in the direction DY2 in which the trimming groove 14 extends. The trimming groove 13 and the trimming groove 14 extend along a straight line LX extending in the direction DY (DY1, DY2).
トリミング溝１３、１４の方向ＤＹでの長さＬ１３、Ｌ１４は、ともに抵抗体１１の長手方向ＤＸと直交する方向ＤＹにおける長さの半分以下である。さらに、トリミング溝１３の方向ＤＹ１（ＤＹ）での長さＬ１３はトリミング溝１４の方向ＤＹ２（ＤＹ）での長さＬ１４より大きい、トリミング溝１３の長手方向ＤＸでの幅Ｗ１３はトリミング溝１４の長手方向ＤＸでの幅Ｗ１４より広くなっている。
The lengths L13 and L14 of the trimming grooves 13 and 14 in the direction DY are both less than or equal to half the length in the direction DY orthogonal to the longitudinal direction DX of the resistor 11. Further, the length L13 of the trimming groove 13 in the direction DY1 (DY) is larger than the length L14 of the trimming groove 14 in the direction DY2 (DY), and the width W13 of the trimming groove 13 in the longitudinal direction DX is equal to that of the trimming groove 14. It is wider than the width W14 in the longitudinal direction DX.
トリミング溝１３、１４は以下の方法で形成できる。まず一対の電極１２ａ、１２ｂ間の抵抗体１１の抵抗値を測定する。その後、所定の関係式によりトリミング溝１３の長さＬ１３を決定してトリミング溝１３を形成して抵抗値の粗調整をする（抵抗値粗調整工程）。その際、幅Ｗ１３を所定の値に固定しておいて、長さＬ１３は所望の抵抗値より少し大きい抵抗値が得られるように関係式で決定する。その後、抵抗値を測定することとトリミング溝１４を形成して長さＬ１４を少しずつ大きくすることとを交互に繰り返して抵抗値を微調整する（抵抗値微調整工程）。関係式は、例えば、幅Ｗ１３を上記所定の値に固定しておいて、抵抗器１００の製造前に、抵抗器１００のサンプルで抵抗値とトリミング溝１３の長さＬ１３とを測定して導き出す。関係式はシミュレーションによっても導き出すことができる。
The trimming grooves 13 and 14 can be formed by the following method. First, the resistance value of the resistor 11 between the pair of electrodes 12a and 12b is measured. Then, the length L13 of the trimming groove 13 is determined by a predetermined relational expression, the trimming groove 13 is formed, and the resistance value is roughly adjusted (resistance value rough adjusting step). At that time, the width W13 is fixed to a predetermined value, and the length L13 is determined by a relational expression so that a resistance value slightly larger than a desired resistance value can be obtained. Thereafter, the resistance value is finely adjusted by alternately measuring the resistance value and gradually increasing the length L14 by forming the trimming groove 14 (resistance value fine adjustment step). The relational expression is derived by measuring the resistance value and the length L13 of the trimming groove 13 with a sample of the resistor 100 before the manufacture of the resistor 100, with the width W13 fixed to the above-mentioned predetermined value. .. The relational expression can also be derived by simulation.
ただし、抵抗値粗調整工程と抵抗値微調整工程とは、ほぼ同時に実施しても良く、また、抵抗値微調整工程の後、抵抗値粗調整工程を実施しても良い。
However, the resistance value coarse adjustment step and the resistance value fine adjustment step may be performed almost simultaneously, or the resistance value coarse adjustment step may be performed after the resistance value fine adjustment step.
抵抗器１００が実装された実装用基板は抵抗器１００の下方に位置する。
The mounting board on which the resistor 100 is mounted is located below the resistor 100.
実施の形態における抵抗器１００において、トリミング溝１３の長さをトリミング溝１４の長さより大きくしているので、実装用基板に抵抗器１００が実装された状態で一対の電極１２ａ、１２ｂの片方からもう一方に電流が流れる際に、トリミング溝１４の周囲での電流密度は、トリミング溝１３の先端部１３ａの周囲での電流密度より低くなる。これにより、トリミング溝１４を形成する時のトリミング溝の長さの変化に対する抵抗体１１の抵抗値の変化量が小さくなり、抵抗値の精度を向上させることができる。
In the resistor 100 according to the embodiment, the length of the trimming groove 13 is made larger than the length of the trimming groove 14, so that the resistor 100 is mounted on the mounting substrate from one of the pair of electrodes 12a, 12b. When the current flows to the other side, the current density around the trimming groove 14 becomes lower than the current density around the tip portion 13a of the trimming groove 13. As a result, the amount of change in the resistance value of the resistor 11 with respect to the change in the length of the trimming groove when forming the trimming groove 14 becomes small, and the accuracy of the resistance value can be improved.
図３と図４に示す従来の抵抗器５００は、トリミング溝３ａ、３ｂの長さが増加するのに従って、トリミング溝３ａ、３ｂの先端部５０３ａ、５０３ｂに電流がより集中して電流密度が高くなる。トリミング溝３ａ、３ｂの長さが大きくなるとトリミング溝３ａ、３ｂの長さの変化に対する抵抗値の変化量が大きくなり、これにより、抵抗値の精度が悪化する。
In the conventional resistor 500 shown in FIGS. 3 and 4, as the length of the trimming grooves 3a and 3b is increased, the current is more concentrated in the tip portions 503a and 503b of the trimming grooves 3a and 3b, and the current density is high. Become. As the length of the trimming grooves 3a, 3b increases, the amount of change in the resistance value with respect to the change in the length of the trimming grooves 3a, 3b increases, which deteriorates the accuracy of the resistance value.
実施の形態における抵抗器１００では、前述のように、抵抗値の精度を向上させることができる。
In the resistor 100 according to the embodiment, the accuracy of the resistance value can be improved as described above.
すなわち、抵抗体１１においてトリミング溝１３の先端部１３ａの周囲の電流密度は高く、トリミング溝１３の長さを大きくすると抵抗値の変化量が大きくなり、抵抗値の粗調整ができる。トリミング溝１４を形成する抵抗体１１の側面１１ｂ付近の電流密度は、側面１１ｂがトリミング溝１３の先端部１３ａから離れているので、トリミング溝１３の先端部１３ａよりは低く、トリミング溝１４の長さを増加させても抵抗値の変化量が小さく、抵抗値の微調整ができる。
That is, in the resistor 11, the current density around the tip portion 13a of the trimming groove 13 is high, and when the length of the trimming groove 13 is increased, the amount of change in the resistance value increases, and the resistance value can be roughly adjusted. The current density near the side surface 11b of the resistor 11 forming the trimming groove 14 is lower than that of the tip portion 13a of the trimming groove 13 because the side surface 11b is distant from the tip portion 13a of the trimming groove 13, and the length of the trimming groove 14 is long. Even if the height is increased, the amount of change in the resistance value is small and the resistance value can be finely adjusted.
また、トリミング溝１４の幅をトリミング溝１３の幅をより狭くしているため、トリミング溝１４の位置がずれても、トリミング溝１４の長さに対する抵抗値の変化量を安定させることができる。
Further, since the width of the trimming groove 14 is made narrower than the width of the trimming groove 13, even if the position of the trimming groove 14 is displaced, the amount of change in the resistance value with respect to the length of the trimming groove 14 can be stabilized.
実施の形態において、「上面」「下面」「下方」等の方向を示す用語は、抵抗体１１や電極１２ａ、１２ｂ等の抵抗器１００の構成部材の相対的な位置関係でのみ決まる相対的な方向を示し、鉛直方向等の絶対的な方向を示すものではない。
In the embodiments, terms indicating directions such as “upper surface”, “lower surface”, and “downward” are relative terms that are determined only by the relative positional relationship of the constituent members of the resistor 100 such as the resistor 11 and the electrodes 12a and 12b. It indicates the direction, not the absolute direction such as the vertical direction.
本開示に係る抵抗器およびその製造方法は、抵抗値精度が悪化するのを抑制することができ、特に各種電子機器の電流値検出等に使用される高電力で低い抵抗値の抵抗器等に有用である。
The resistor and the manufacturing method thereof according to the present disclosure can suppress deterioration of resistance value accuracy, and particularly for a resistor with high power and low resistance value used for current value detection of various electronic devices. It is useful.
１１ 抵抗体
１２ａ，１２ｂ 電極
１３ トリミング溝（第１のトリミング溝）
１４ トリミング溝（第２のトリミング溝） 11 resistors 12a, 12b electrodes 13 trimming groove (first trimming groove)
14 Trimming groove (second trimming groove)
１２ａ，１２ｂ 電極
１３ トリミング溝（第１のトリミング溝）
１４ トリミング溝（第２のトリミング溝） 11
14 Trimming groove (second trimming groove)
Claims (11)
- 上面と、下面と、前記上面と前記下面とに繋がる第１の側面と、前記第１の側面の反対側で前記上面と前記下面とに繋がる第２の側面とを有する板状の金属で構成された抵抗体と、
前記抵抗体の両端部に接続された一対の電極と、
を備え、
前記抵抗体には、前記第１の側面から第１の先端部まで延びる第１のトリミング溝と、前記第２の側面から前記第１の先端部に対向する第２の先端部まで延びる第２のトリミング溝とが形成されており、
前記第１のトリミング溝の長さは前記第２のトリミング溝の長さより大きい、抵抗器。 It is composed of a plate-shaped metal having an upper surface, a lower surface, a first side surface connected to the upper surface and the lower surface, and a second side surface connected to the upper surface and the lower surface on the side opposite to the first side surface. Resistor,
A pair of electrodes connected to both ends of the resistor,
Equipped with
The resistor has a first trimming groove extending from the first side surface to a first tip portion, and a second trimming groove extending from the second side surface to a second tip portion facing the first tip portion. The trimming groove of is formed,
A resistor wherein the length of the first trimming groove is greater than the length of the second trimming groove. - 前記第１のトリミング溝の幅は前記第２のトリミング溝の幅より広い、請求項１に記載の抵抗器。 The resistor according to claim 1, wherein a width of the first trimming groove is wider than a width of the second trimming groove.
- 前記第１のトリミング溝の前記第１の先端部と前記第２のトリミング溝の前記第２の先端部とは前記第１のトリミング溝が延びる方向で互いに対向する、請求項１または２に記載の抵抗器。 The first tip portion of the first trimming groove and the second tip portion of the second trimming groove face each other in a direction in which the first trimming groove extends. Resistor.
- 前記第１のトリミング溝の前記第１の先端部と前記第２のトリミング溝の前記第２の先端部とは前記第２のトリミング溝が延びる方向で互いに対向する、請求項１から３のいずれか一項に記載の抵抗器。 The first tip portion of the first trimming groove and the second tip portion of the second trimming groove face each other in the extending direction of the second trimming groove. The resistor according to claim 1.
- 前記第１のトリミング溝と前記第２のトリミング溝とは一直線に沿って延びる、請求項１から４のいずれか一項に記載の抵抗器。 The resistor according to claim 1, wherein the first trimming groove and the second trimming groove extend along a straight line.
- 前記抵抗体の前記両端部は長手方向に配列されており、
前記第１のトリミング溝と前記第２のトリミング溝とは前記長手方向に交差する方向に延びる、請求項１から５のいずれか一項に記載の抵抗器。 The both ends of the resistor are arranged in the longitudinal direction,
The resistor according to claim 1, wherein the first trimming groove and the second trimming groove extend in a direction intersecting the longitudinal direction. - 前記抵抗体の前記両端部は長手方向に配列されており、
前記第１のトリミング溝と前記第２のトリミング溝とは前記長手方向に直角の方向から見て前記一対の電極の間に位置する、請求項１から５のいずれか一項に記載の抵抗器。 The both ends of the resistor are arranged in the longitudinal direction,
The resistor according to claim 1, wherein the first trimming groove and the second trimming groove are located between the pair of electrodes when viewed in a direction perpendicular to the longitudinal direction. .. - 上面と、下面と、前記上面と前記下面とに繋がる第１の側面と、前記第１の側面の反対側で前記上面と前記下面とに繋がる第２の側面とを有する抵抗体を準備するステップと、
前記抵抗体の前記第１の側面から前記抵抗体に第１の先端部まで第１のトリミング溝を形成するステップと、
前記抵抗体の前記第２の側面から前記抵抗体に前記第１の先端部と対向する第２の先端部まで第２のトリミング溝を形成するステップと、
を含み、
前記第１のトリミング溝の長さは前記第２のトリミング溝の長さより大きく、
前記第１のトリミング溝の幅は前記第２のトリミング溝の幅より広い、抵抗器の製造方法。 Providing a resistor having a top surface, a bottom surface, a first side surface connecting the top surface and the bottom surface, and a second side surface opposite the first side surface and connecting to the top surface and the bottom surface. When,
Forming a first trimming groove from the first side surface of the resistor to the first tip of the resistor;
Forming a second trimming groove from the second side surface of the resistor to the second tip portion of the resistor that faces the first tip portion;
Including
The length of the first trimming groove is greater than the length of the second trimming groove,
The method of manufacturing a resistor, wherein the width of the first trimming groove is wider than the width of the second trimming groove. - 前記第１のトリミング溝の前記第１の先端部と前記第２のトリミング溝の前記先端部とは前記第１のトリミング溝が延びる方向で互いに対向する、請求項８に記載の抵抗器の製造方法。 9. The resistor manufacturing method according to claim 8, wherein the first tip portion of the first trimming groove and the tip portion of the second trimming groove face each other in a direction in which the first trimming groove extends. Method.
- 前記第１のトリミング溝の前記第１の先端部と前記第２のトリミング溝の前記先端部とは前記第２のトリミング溝が延びる方向で互いに対向する、請求項８または９に記載の抵抗器の製造方法。 The resistor according to claim 8 or 9, wherein the first tip portion of the first trimming groove and the tip portion of the second trimming groove face each other in a direction in which the second trimming groove extends. Manufacturing method.
- 前記第１のトリミング溝と前記第２のトリミング溝とは一直線上に位置する、請求項８から１０のいずれか一項に記載の抵抗器の製造方法。 The method of manufacturing a resistor according to claim 8, wherein the first trimming groove and the second trimming groove are located on a straight line.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6063902U (en) * | 1983-10-05 | 1985-05-07 | 株式会社富士通ゼネラル | membrane resistor |
| JPH0569902U (en) * | 1990-09-12 | 1993-09-21 | コーア株式会社 | Surge protector |
| JPH11162720A (en) * | 1997-11-21 | 1999-06-18 | Hokuriku Electric Ind Co Ltd | Chip resistor and its adjusting method |
| JP2007027383A (en) * | 2005-07-15 | 2007-02-01 | Hokuriku Electric Ind Co Ltd | Trimming method of metal plate resistor for current detection and metal plate resistor for current detection manufactured thereby |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61184803A (en) * | 1985-02-12 | 1986-08-18 | 株式会社村田製作所 | Resistance value adjustment for chip type resistor |
| US6801118B1 (en) | 1997-10-02 | 2004-10-05 | Matsushita Electric Industrial Co., Ltd. | Low-resistance resistor and its manufacturing method |
| US6148502A (en) * | 1997-10-02 | 2000-11-21 | Vishay Sprague, Inc. | Surface mount resistor and a method of making the same |
| JP2002050501A (en) | 2000-08-01 | 2002-02-15 | K-Tech Devices Corp | Mounting body and using method thereof |
-
2019
- 2019-11-06 WO PCT/JP2019/043527 patent/WO2020148972A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6063902U (en) * | 1983-10-05 | 1985-05-07 | 株式会社富士通ゼネラル | membrane resistor |
| JPH0569902U (en) * | 1990-09-12 | 1993-09-21 | コーア株式会社 | Surge protector |
| JPH11162720A (en) * | 1997-11-21 | 1999-06-18 | Hokuriku Electric Ind Co Ltd | Chip resistor and its adjusting method |
| JP2007027383A (en) * | 2005-07-15 | 2007-02-01 | Hokuriku Electric Ind Co Ltd | Trimming method of metal plate resistor for current detection and metal plate resistor for current detection manufactured thereby |
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| JPWO2020148972A1 (en) | 2021-12-02 |
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