JP2007141907A - Resistor and method of manufacturing same - Google Patents

Resistor and method of manufacturing same Download PDF

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Publication number
JP2007141907A
JP2007141907A JP2005329655A JP2005329655A JP2007141907A JP 2007141907 A JP2007141907 A JP 2007141907A JP 2005329655 A JP2005329655 A JP 2005329655A JP 2005329655 A JP2005329655 A JP 2005329655A JP 2007141907 A JP2007141907 A JP 2007141907A
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resistor
hole
peripheral edge
resistance value
pair
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JP4887749B2 (en
JP2007141907A5 (en
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Hiroki Konaka
浩樹 小中
Takeshi Watanabe
岳 渡辺
Seiji Tsuda
清二 津田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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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
    • H01C17/245—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by mechanical means, e.g. sand blasting, cutting, ultrasonic treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resistor in which a resistance value can be adjusted and the strength of a resistor body is high. <P>SOLUTION: In order to achieve the purpose, this resistor is provided with the resistor body 11 made of a metal plate; a pair of electrodes 12 provided on both ends of this resistor body 11, wherein at least one through hole 13 is formed on the resistor body 11 to prevent contact with peripheral portions 11a of the resistor body 11. Thus, the resistor in which the resistance value can be adjusted and the strength of the resistor body is high can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、各種電子機器の電流値検出等に使用される抵抗器およびその製造方法に関するものである。   The present invention relates to a resistor used for detecting a current value of various electronic devices and a manufacturing method thereof.

従来のこの種の抵抗器は、図５、図６に示すように、板状の金属で構成された抵抗体１と、この抵抗体１の両端部に形成された金属からなる一対の電極２とを備え、そして前記抵抗体１の長手方向の周縁部１ａに、電流が蛇行するように抵抗値調整用の複数の切込部３を交互に設けた構成としていた。   As shown in FIG. 5 and FIG. 6, this type of conventional resistor includes a resistor 1 made of a plate-like metal and a pair of electrodes 2 made of metal formed at both ends of the resistor 1. And a plurality of notch portions 3 for adjusting the resistance value are alternately provided at the peripheral edge portion 1a in the longitudinal direction of the resistor 1 so that the current meanders.

なお、この出願の発明に関する先行技術文献情報としては、例えば、特許文献１が知られている。
特開平８−２３６３２４号公報 As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.
JP-A-8-236324

上記した従来の抵抗器においては、抵抗値調整のために抵抗体１の周縁部１ａに複数の切込部３が設けられているため、切込部３と、この切込部３の先端部と対向する抵抗体１の周縁部１ａとの間で抵抗体１が折れ曲がりやすくなり、これにより、抵抗体１の強度が弱くなるという課題を有していた。   In the conventional resistor described above, since the plurality of cut portions 3 are provided in the peripheral portion 1a of the resistor 1 for adjusting the resistance value, the cut portion 3 and the tip portion of the cut portion 3 are provided. The resistor 1 is easily bent between the peripheral portion 1a of the resistor 1 and the resistor 1, and the strength of the resistor 1 is thereby weakened.

本発明は上記従来の課題を解決するもので、抵抗値調整ができ、かつ抵抗体の強度も強い抵抗器を提供することを目的とするものである。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a resistor capable of adjusting a resistance value and having a strong resistance.

上記目的を達成するために本発明は、以下の構成を有するものである。   In order to achieve the above object, the present invention has the following configuration.

本発明の請求項１に記載の発明は、金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に少なくとも１つの貫通孔を形成したもので、この構成によれば、従来のように抵抗体の周縁部に切込部を設ける構成ではないため、抵抗体の強度が弱くなることはなく、そして本発明は抵抗体に貫通孔を形成する構成としているため、抵抗値調整も可能であるという作用効果が得られるものである。   The invention according to claim 1 of the present invention includes a resistor configured by a metal plate and a pair of electrodes provided at both ends of the resistor, and does not come into contact with a peripheral portion of the resistor. The resistor is formed with at least one through-hole. According to this configuration, since the notch is not provided in the peripheral portion of the resistor as in the prior art, the strength of the resistor is not weakened. And since this invention is set as the structure which forms a through-hole in a resistor, the effect that resistance value adjustment is also possible is acquired.

本発明の請求項２に記載の発明は、金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に凹部を形成したもので、この構成によれば、抵抗体を貫通させなくても凹部により大きな体積を欠落させることができるため、抵抗体の強度が弱くなることはなく、また抵抗値を計測しながら凹部の切削ができるため、抵抗値の精度を向上させることができるという作用効果が得られるものである。   Invention of Claim 2 of this invention is equipped with the resistor comprised by the metal plate, and a pair of electrode provided in the both ends of this resistor, and said said so that it may not contact with the peripheral part of the said resistor In this structure, a recess is formed. According to this configuration, a large volume can be lost in the recess without penetrating the resistor, so that the strength of the resistor does not become weak and the resistance value is reduced. Since the concave portion can be cut while measuring the resistance, the effect of improving the accuracy of the resistance value can be obtained.

本発明の請求項３に記載の発明は、金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に貫通孔を形成するとともにこの貫通孔の開口部の少なくとも一部の周縁部に凹部を形成したもので、この構成によれば、貫通孔の開口部の周縁部にバリが発生しても凹部の形成により前記バリを削除できるという作用効果が得られるものである。   The invention according to claim 3 of the present invention includes a resistor composed of a metal plate and a pair of electrodes provided at both ends of the resistor, so as not to contact the peripheral portion of the resistor. A through hole is formed in the resistor, and a recess is formed in at least a peripheral portion of the opening of the through hole. According to this configuration, a burr is generated in the peripheral portion of the through hole. Also, the effect of removing the burr can be obtained by forming the recess.

本発明の請求項４に記載の発明は、金属板で構成した抵抗体の両端部に一対の電極を形成する工程と、前記抵抗体の周縁部と接触しないように前記抵抗体に少なくとも１つの貫通孔を形成する工程とを備えたもので、この製造方法によれば、従来のように抵抗体の周縁部に切込部を設ける構成ではないため、抵抗体の強度が弱くなることはなく、そして本発明は抵抗体に貫通孔を形成する構成としているため、抵抗値調整も可能であるという作用効果が得られるものである。   According to a fourth aspect of the present invention, there is provided a step of forming a pair of electrodes on both ends of a resistor composed of a metal plate, and at least one resistor on the resistor so as not to contact the peripheral edge of the resistor. According to this manufacturing method, the strength of the resistor is not weakened because it is not configured to provide a notch at the peripheral edge of the resistor as in the prior art. And since this invention is set as the structure which forms a through-hole in a resistor, the effect that resistance value adjustment is also possible is acquired.

本発明の請求項５に記載の発明は、金属板で構成した抵抗体の両端部に一対の電極を形成する工程と、前記抵抗体の周縁部と接触しないように前記抵抗体に貫通孔を形成する工程と、前記貫通孔の開口部の周縁部の少なくとも一部を切削して凹部を形成する工程とを備えたもので、この製造方法によれば、貫通孔を形成した際に、貫通孔の開口部の周縁部にバリが発生したとしても、この貫通孔を形成した後に、貫通孔の開口部の周縁部に凹部を形成するようにしているため、貫通孔の開口部の周縁部に発生したバリも凹部の形成により確実に削除できるという作用効果が得られるものである。   According to a fifth aspect of the present invention, there is provided a step of forming a pair of electrodes at both ends of a resistor composed of a metal plate, and a through hole in the resistor so as not to contact the peripheral edge of the resistor. And forming a recess by cutting at least a part of the peripheral edge of the opening of the through hole. According to this manufacturing method, the through hole is formed when the through hole is formed. Even if burrs occur at the peripheral edge of the opening of the hole, the concave portion is formed at the peripheral edge of the opening of the through hole after the through hole is formed. The effect that the burrs generated in the film can be surely removed by forming the recesses can be obtained.

以上のように本発明の抵抗器は、抵抗体の周縁部と接触しないように抵抗体に少なくとも１つの貫通孔を形成したもので、従来のように抵抗体の周縁部に切込部を設ける構成ではないため、抵抗体の強度が弱くなることはなく、そして本発明は抵抗体に貫通孔を形成する構成としているため、抵抗値調整も可能であるという優れた効果を奏するものである。   As described above, the resistor according to the present invention is formed by forming at least one through hole in the resistor so as not to come into contact with the periphery of the resistor, and providing a notch in the periphery of the resistor as in the prior art. Since it is not a structure, the strength of the resistor does not become weak, and the present invention has a structure in which a through hole is formed in the resistor, so that it has an excellent effect that the resistance value can be adjusted.

（実施の形態１）
以下、実施の形態１を用いて、本発明の特に請求項１に記載の発明について説明する。 (Embodiment 1)
Hereinafter, the first aspect of the present invention will be described with reference to the first embodiment.

図１は本発明の実施の形態１における抵抗器の斜視図、図２は同抵抗器の主要部の上面図である。   FIG. 1 is a perspective view of a resistor according to Embodiment 1 of the present invention, and FIG. 2 is a top view of a main part of the resistor.

本発明の実施の形態１における抵抗器は、図１、図２に示すように、金属板で構成した抵抗体１１と、この抵抗体１１の両端部に設けられた一対の電極１２とを備え、前記抵抗体１１の周縁部１１ａと接触しないように前記抵抗体１１に貫通孔１３を形成するようにしているものである。   As shown in FIGS. 1 and 2, the resistor according to the first embodiment of the present invention includes a resistor 11 formed of a metal plate and a pair of electrodes 12 provided at both ends of the resistor 11. The through hole 13 is formed in the resistor 11 so as not to contact the peripheral edge portion 11a of the resistor 11.

上記構成において、前記抵抗体１１は、ニクロム、銅ニッケル、マンガニン等の導電性の良好な板状の金属からなる金属板で構成され、その長さは１．０〜１５ｍｍ、幅は０．５〜１０ｍｍ、厚みは１００〜１０００μｍとなっている。さらに、この抵抗体１１の上面および下面にはエポキシ樹脂、ポリイミド樹脂等の絶縁材からなる保護膜（図示せず）が形成されている。   In the above configuration, the resistor 11 is made of a metal plate made of a plate-like metal having good conductivity such as nichrome, copper nickel, manganin, etc., and has a length of 1.0 to 15 mm and a width of 0.5. 10 mm and the thickness is 100 to 1000 μm. Further, a protective film (not shown) made of an insulating material such as epoxy resin or polyimide resin is formed on the upper and lower surfaces of the resistor 11.

また前記一対の電極１２は、銅等の導電性の良好な板状の金属で構成されているもので、この電極１２は抵抗体１１の両端部に溶接によって接続されている。なお、この電極１２は抵抗体１１の両端部において抵抗体１１と一体的に形成してもよいものである。   The pair of electrodes 12 are made of a plate-like metal having good conductivity such as copper, and the electrodes 12 are connected to both ends of the resistor 11 by welding. The electrode 12 may be formed integrally with the resistor 11 at both ends of the resistor 11.

そしてまた、前記電極１２の少なくとも下面にはすずめっきが施されるもので、これにより抵抗器は実装基板に実装される。なお、このすずめっきと電極１２の下面との間には必要に応じてＮｉめっきまたはＣｕめっきを形成してもよいものである。   In addition, tin plating is applied to at least the lower surface of the electrode 12, whereby the resistor is mounted on the mounting substrate. Note that Ni plating or Cu plating may be formed between the tin plating and the lower surface of the electrode 12 as necessary.

また前記貫通孔１３は、抵抗体１１の略中央部に抵抗体１１の周縁部１１ａと接触しないように円形状に１つ設けられている。ここで、抵抗体１１の周縁部１１ａとは、電極１２が形成されていない抵抗体１１の長手方向の辺をいう。   One through hole 13 is provided in a circular shape so as not to come into contact with the peripheral edge portion 11 a of the resistor 11 at a substantially central portion of the resistor 11. Here, the peripheral portion 11a of the resistor 11 refers to a side in the longitudinal direction of the resistor 11 where the electrode 12 is not formed.

なお、前記貫通孔１３の数は１つに限らず複数あってもよい。また、形状は円形状に限定されるものではないが、電流集中を防ぐために少なくとも一部にＲを有するような形状が好ましい。   The number of the through holes 13 is not limited to one and may be plural. Further, the shape is not limited to a circular shape, but a shape having R at least in part in order to prevent current concentration is preferable.

次に、本発明の実施の形態１における抵抗器の製造方法について説明する。   Next, a method for manufacturing the resistor according to the first embodiment of the present invention will be described.

図１、図２において、まず、板状の金属に、切断加工、打ち抜き加工、プレス加工等を施すことにより、方形状の抵抗体１１を形成する。   1 and 2, first, a rectangular resistor 11 is formed by subjecting a plate-like metal to cutting, punching, pressing and the like.

次に、抵抗体１１の両端部に溶接によって電極１２を接続する。   Next, the electrode 12 is connected to both ends of the resistor 11 by welding.

なお、抵抗体１１と電極１２との接続は、めっき、クラッド接合等の他の方法を用いて行ってもよい。   The resistor 11 and the electrode 12 may be connected using other methods such as plating and clad bonding.

次に、抵抗体１１の略中央部に円形状の貫通孔１３を、打ち抜き、プレス、ドリル等を用いて形成し、抵抗体１１の抵抗値を調整する。   Next, a circular through hole 13 is formed in a substantially central portion of the resistor 11 using a punch, press, drill, or the like, and the resistance value of the resistor 11 is adjusted.

次に、抵抗体１１の上面および下面に、保護膜（図示せず）を熱圧着、超音波溶着等により形成する。   Next, a protective film (not shown) is formed on the upper and lower surfaces of the resistor 11 by thermocompression bonding, ultrasonic welding, or the like.

最後に、電極１２の少なくとも下面に必要に応じてＮｉめっきまたはＣｕめっき、すずめっきを形成する。   Finally, Ni plating, Cu plating, or tin plating is formed on at least the lower surface of the electrode 12 as necessary.

上記した本発明の実施の形態１においては、抵抗体１１の周縁部１１ａと接触しないように前記抵抗体１１に貫通孔１３を形成したもので、従来のように抵抗体１１の周縁部１１ａに切込部を設ける構成ではないため、抵抗体１１の強度が弱くなることはなく、そして本発明の実施の形態１は抵抗体１１に貫通孔１３を形成する構成としているため、抵抗値調整も可能である。   In the above-described first embodiment of the present invention, the through-hole 13 is formed in the resistor 11 so as not to contact the peripheral portion 11a of the resistor 11, and the peripheral portion 11a of the resistor 11 is formed in the conventional manner. Since it is not the structure which provides a notch part, the intensity | strength of the resistor 11 does not become weak, and since Embodiment 1 of this invention is set as the structure which forms the through-hole 13 in the resistor 11, resistance value adjustment is also carried out. Is possible.

すなわち、貫通孔１３と、抵抗体１１の周縁部１１ａとの間の部分（図２のＬの部分）の断面積は、他の部分の断面積より小さいため、貫通孔１３を形成することにより抵抗値調整が可能となるものである。   That is, since the cross-sectional area of the portion between the through-hole 13 and the peripheral portion 11a of the resistor 11 (the portion L in FIG. 2) is smaller than the cross-sectional area of the other portion, the through-hole 13 is formed. The resistance value can be adjusted.

（実施の形態２）
以下、実施の形態２を用いて、本発明の特に請求項２〜４に記載の発明について説明する。 (Embodiment 2)
Hereinafter, the invention described in the second to fourth aspects of the present invention will be described using the second embodiment.

図３は本発明の実施の形態２における抵抗器の断面図である。なお、上記した本発明の実施の形態１の構成と同様の構成を有するものについては、同一符号を付しその説明は省略する。   FIG. 3 is a cross-sectional view of the resistor according to the second embodiment of the present invention. In addition, about what has the structure similar to the structure of Embodiment 1 of the above-mentioned this invention, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

本発明の実施の形態２は、図３に示すように、上記した本発明の実施の形態１のように抵抗体１１に貫通孔１３を形成するのではなく、抵抗体１１に断面三角形の凹部１４を形成し、抵抗値調整を行うようにしたものである。   As shown in FIG. 3, the second embodiment of the present invention does not form the through holes 13 in the resistor 11 as in the first embodiment of the present invention, but has a concave section with a triangular cross section in the resistor 11. 14 is formed to adjust the resistance value.

このように、本発明の実施の形態２においては、抵抗体１１を貫通しない凹部１４を形成しているため、抵抗体１１を貫通させなくても凹部１４によって大きな体積を欠落させることができ、これにより、抵抗体１１の強度が弱くなるということはなく、また抵抗値を計測しながら凹部１４の切削ができるため、抵抗値の精度を向上させることができるものである。   Thus, in Embodiment 2 of the present invention, since the recess 14 that does not penetrate the resistor 11 is formed, a large volume can be lost by the recess 14 without penetrating the resistor 11, Thereby, the strength of the resistor 11 is not weakened, and the recess 14 can be cut while measuring the resistance value, so that the accuracy of the resistance value can be improved.

なお、凹部１４は、先端部の断面の角度が鈍角で三角錐状のドリルを用いて、抵抗体１１を切削することにより形成する。そしてこの凹部１４の形状は、断面三角形に限定されるものではなく、これ以外の楕円状、台形状等の他の形状でもよい。   In addition, the recessed part 14 is formed by cutting the resistor 11 using a triangular pyramid-shaped drill with an obtuse angle in the cross section of the tip. And the shape of this recessed part 14 is not limited to a cross-sectional triangle, Other shapes, such as other ellipse shape and trapezoid shape, may be sufficient.

また、図４に示すように、抵抗体１１に貫通孔１３を形成するとともにこの貫通孔１３の開口部の周縁部に断面三角形の凹部１４を形成すれば、貫通孔１３の開口部の周縁部にバリが発生しても凹部１４の形成により前記バリを削除できるものである。すなわち、この場合は、貫通孔１３の開口部の周縁部にバリが発生したとしても、この貫通孔１３を形成した後に、貫通孔１３の開口部の周縁部の一部に凹部１４を形成するようにしているため、貫通孔１３の開口部の周縁部に発生したバリも凹部１４の形成により確実に削除できるものである。   Further, as shown in FIG. 4, if the through hole 13 is formed in the resistor 11 and the concave portion 14 having a triangular cross section is formed in the peripheral portion of the opening portion of the through hole 13, the peripheral portion of the opening portion of the through hole 13 Even if burrs are generated, the burrs can be eliminated by forming the recesses 14. That is, in this case, even if burrs are generated at the peripheral portion of the opening portion of the through hole 13, the concave portion 14 is formed at a part of the peripheral portion of the opening portion of the through hole 13 after the through hole 13 is formed. Therefore, the burr generated at the peripheral edge of the opening of the through hole 13 can be reliably deleted by forming the recess 14.

本発明に係る抵抗器は、抵抗値調整ができるとともに、抵抗体の強度も強いものが得られるものであり、各種電子機器の電流値検出等に使用される抵抗器において有用となるものである。   The resistor according to the present invention is capable of adjusting the resistance value and having a strong resistance, and is useful in resistors used for detecting the current value of various electronic devices. .

本発明の実施の形態１における抵抗器の斜視図The perspective view of the resistor in Embodiment 1 of this invention 同抵抗器の主要部の上面図Top view of the main part of the resistor 本発明の実施の形態２における抵抗器の断面図Sectional drawing of the resistor in Embodiment 2 of this invention 同抵抗器の他の例を示す断面図Sectional drawing which shows the other example of the resistor 従来の抵抗器の斜視図A perspective view of a conventional resistor 同抵抗器の主要部の上面図Top view of the main part of the resistor

符号の説明Explanation of symbols

１１ 抵抗体
１１ａ 周縁部
１２ 電極
１３ 貫通孔
１４ 凹部 DESCRIPTION OF SYMBOLS 11 Resistor 11a Peripheral part 12 Electrode 13 Through-hole 14 Recessed part

Claims (5)

金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に少なくとも１つの貫通孔を形成した抵抗器。 A resistor comprising a resistor composed of a metal plate and a pair of electrodes provided at both ends of the resistor, and having at least one through hole formed in the resistor so as not to contact the peripheral edge of the resistor vessel. 金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に凹部を形成した抵抗器。 A resistor comprising a resistor composed of a metal plate and a pair of electrodes provided at both ends of the resistor, wherein a recess is formed in the resistor so as not to contact the peripheral edge of the resistor. 金属板で構成した抵抗体と、この抵抗体の両端部に設けられた一対の電極とを備え、前記抵抗体の周縁部と接触しないように前記抵抗体に貫通孔を形成するとともにこの貫通孔の開口部の少なくとも一部の周縁部に凹部を形成した抵抗器。 The resistor comprises a resistor composed of a metal plate and a pair of electrodes provided at both ends of the resistor, and the through hole is formed in the resistor so as not to contact the peripheral edge of the resistor. The resistor which formed the recessed part in the peripheral part of at least one part of the opening part of this. 金属板で構成した抵抗体の両端部に一対の電極を形成する工程と、前記抵抗体の周縁部と接触しないように前記抵抗体に少なくとも１つの貫通孔を形成する工程とを備えた抵抗器の製造方法。 A resistor comprising: a step of forming a pair of electrodes at both ends of a resistor composed of a metal plate; and a step of forming at least one through hole in the resistor so as not to contact the peripheral edge of the resistor. Manufacturing method. 金属板で構成した抵抗体の両端部に一対の電極を形成する工程と、前記抵抗体の周縁部と接触しないように前記抵抗体に貫通孔を形成する工程と、前記貫通孔の開口部の周縁部の少なくとも一部を切削して凹部を形成する工程とを備えた抵抗器の製造方法。 A step of forming a pair of electrodes on both ends of the resistor composed of a metal plate, a step of forming a through hole in the resistor so as not to contact the peripheral edge of the resistor, and an opening of the through hole And a step of cutting at least a part of the peripheral edge to form a recess.
JP2005329655A 2005-11-15 2005-11-15 Resistor manufacturing method Expired - Fee Related JP4887749B2 (en)

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Cited By (7)

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JP2009016793A (en) * 2007-06-29 2009-01-22 Feel Cherng Enterprise Co Ltd Apertured chip resistor and method for fabricating the same
JP2009016791A (en) * 2007-06-29 2009-01-22 Feel Cherng Enterprise Co Ltd Chip resistor and method for fabricating the same
JP2009289770A (en) * 2008-05-27 2009-12-10 Koa Corp Resistor
JP2016152301A (en) * 2015-02-17 2016-08-22 ローム株式会社 Chip resistor and manufacturing method thereof
EP3349223A4 (en) * 2015-10-15 2019-06-05 Suncall Corporation Method for manufacturing shunt resistor
JP2020021965A (en) * 2019-11-07 2020-02-06 サンコール株式会社 Shunt resistor
EP3674716A4 (en) * 2018-03-28 2021-01-27 LG Chem, Ltd. Shunt resistor and current detecting device including same

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JP2005183413A (en) * 2003-12-16 2005-07-07 Koa Corp Metal resistor

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JPH0410601A (en) * 1990-04-27 1992-01-14 Tdk Corp Thick film resistor and manufacture thereof
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Publication number Priority date Publication date Assignee Title
JP2009016793A (en) * 2007-06-29 2009-01-22 Feel Cherng Enterprise Co Ltd Apertured chip resistor and method for fabricating the same
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