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This section provides an overview for cement resistors as well as their applications and principles. Also, please take a look at the list of 10 cement resistor manufacturers and their company rankings. Here are the top-ranked cement resistor companies as of December, 2024: 1.Akahane Electronics Corporation, 2.KOA Corporation, 3.Japan Resistor Mfg. Co., Ltd..
Table of Contents
A cement resistor is an electronic circuit component that acts as a resistance to the current flowing in a circuit.
There are various types of resistors, of which cement resistor is classified as wire-wound resistors. This is because many of them use wire-wound resistive elements to block the flow of electricity. Some cement resistors use resistance elements other than wire-wound resistors.
Wire-wound resistors are classified according to the material of the case covering the outside. Besides cement resistors, there are wire-wound resistors, metal-clad resistors, and enamel resistors.
Cement resistors are resistors in electronic circuits that impede the flow of current. They are used to limit current, divide voltage, or detect current, depending on the purpose.
In many cases where cement resistors are used, the temperature of the resistor is high or the humidity is high enough to cause severe deterioration of the resistor. Resistors are also classified according to the power they can use, but cement resistors fall into the medium capacity class (10 W or less) for power circuits.
Cement resistors have excellent heat, moisture, and vibration resistance because the resistors are surrounded by cement. Therefore, most of them are mounted on electronic circuit boards used in outdoor high-power equipment.
Cement resistors are resistance in an electronic circuit, which is expressed as resistance in Ohm's law. Ohm's law is expressed by the following equation
V (voltage) = R (resistance) x I (current)
The unit of resistance is the ohm (Ω), which can be found in cement resistor catalogs. In cement resistors, a resistive element, which provides electrical resistance, is encapsulated in cement. When an electric current flows through the resistive element, it generates heat, and its role is to dissipate the heat little by little so that the heat is not easily transferred to the surroundings.
Most resistive elements are wire-wound resistors, but metal oxide film resistors are sometimes used for large resistance values (100 Ω or more). Because of their excellent environmental resistance, they are used outdoors in adverse environments such as high temperatures, high humidity, and intense vibrations.
Most cement resistors are wire-wound type resistors, and their structure is the same as that of a coil. Therefore, they have an inductance component. Because of this effect in the high-frequency band, it is safer to avoid using them in circuits that operate at high speeds, such as high-speed switching, because they may generate unexpected noise.
The cement used for the casing of cement resistors is non-flammable. Since it does not ignite even at high temperatures, its advantage is that it can be mounted directly on a circuit board. Cement resistors are suitable for use as stable power circuits in harsh environmental conditions.
Most cement resistors use wire windings for the resistive elements, which create inductance. When used in high-frequency AC circuits, this results in an increase in impedance. The disadvantage is that these phenomena may cause unexpected noise in circuits operating at high speeds, such as high-speed switching.
Inductance is a phenomenon in which an increase in the current flowing through a coil causes the coil itself to work to reduce the flow of current, and conversely, a decrease in the current causes an increase in the current flowing through it.
Impedance is the ratio of voltage to current in an AC circuit, and it works to impede the flow of current. It expresses the difficulty of current flow and is equivalent to resistance in a DC circuit.
*Including some distributors, etc.
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Japan Resistor Mrg. Co., Ltd develops, manufactures electronic devices, sensor compound apparatuses, hybrid integrated circuits, SMC products, sensors, potentiometers, heaters and resistors. JRM develops these for electronic devices, and industrial equipment, automotive, and medical equipment industries. JRM has acquired ISO 14001 certification and is expanding to support green power industries.
Akahane Electronics Corporation, established in 1960 and headquartered in Tokyo, Japan, is a manufacturer and supplier of resistors. Their diverse product range includes general purpose resistors used in electronic circuits, appliances, and equipment, precision resistors catering to applications requiring high accuracy like test and measurement equipment and medical devices, and thick film resistors suitable for demanding conditions such as automotive and industrial applications with high temperature and humidity resistance. Akahane Electronics' resistors find widespread use in electronics, automotive, and various industrial sectors, providing accurate solutions for diverse applications.
KOA Corporation, established in 1940 in Minowa-machi, Japan, is a manufacturer of electronic components. The company provides an extensive product range including resistors, current sense shunt resistors, fuses, thermal sensors, and inductors. These quality components find applications in industries such as automotive, ecology, energy conservation, telecommunications, power supply units, and home appliances. Operating under the guiding principles of circulation, finite resources, harmony, and enrichment, it continues to provide sustainable electronic solutions to cater to the ever-changing demands of global industries.
Teikoku Tsushin Kogyo Co., Ltd. (TTKC) is a Japanese electronic component manufacturer headquartered in Kanagawa. Established in 1944, the company initially specialized in wireless communication parts before expanding to the distribution and production of various sensors, potentiometers, switches, and resistors under the brand name Noble Electronics. The company has several sales outlets throughout Japan, as well as overseas offices in the US, China, Korea, Singapore, and Thailand. From their many manufacturing locations, TTKC allows clients to customize products used in a range of applications, including industrial equipment, home appliances, A/V equipment, and health care.
TY-OHM ELECTRONIC WORKS CO., LTD., established in 1958 with headquarters in Taiwan, is a manufacturer of carbon film and low-end wire-wound resistors. The company's product line includes SMD resistors, carbon film resistors, non-inductive resistors, pulse resistors, and wire-wound chip resistors. TY-OHM ELECTRONIC WORKS CO., LTD.'s products are used in mobile phones, notebooks, lighting, power supplies, vehicles, and smart home appliances, among many others. The company's clients include Dyson, Flexpower, Emerson, Osram, Philips, and Samsung.
ALPHA WAVE Inc. is a Japanese manufacturer of integrated circuits (ICs) that was established in Tokyo in 2003. The company’s products include clock and data recovery (CDR) circuits, digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), transimpedance amplifiers (TIAs), and low-noise amplifiers (LNAs) for wireless communication. It also offers evaluation kits and boards for testing custom designed ICs for customer projects. The company’s products are used mainly in the wireless and optical communication industries, as well as in the medical device and consumer electronics manufacturing sectors.
YAGEO Group, a global supplier of passive components, including chip resistors, MLCC, through-hole resistors, wireless components, inductors and coils, established in 1977 and is based in Taiwan. The Group serves multiple industries, including automotive, telecommunications, smart manufacturing, and power and energy. They offer complete solutions for body and convenience, powertrain and safety, comfort and infotainment, and e-mobility in the automotive industry. They have established a strong global presence with 29 sales offices, 51 production sites, 20 research and development centers, and 40,000 employees worldwide.
Fukushima Futaba Electric Co., Ltd. established on July 24, 1964, and located in Tamakawa-mura, Fukushima, Japan, is a manufacturer and supplier of electronic components and assemblies. The company's product range includes resistor network resistor array/SIP type, hybrid IC/thick film printing, board printing and mounting, LED, and touch panels. These components play vital roles in various electronic devices and systems. They serve industries such as consumer electronics, automotive, lighting, and industrial machinery. Beyond manufacturing, the company offers precision printing, custom component development, electronic board assembly, and LED technology solutions.
Thunder Components Ltd. is a Taiwanese manufacturer of resistors that was established in New Taipei City in 1971. The company primarily produces various dual in-line package (DIP) resistors including metal oxide film, fusible metal film, and carbon film models, as well as surface mount (SMD) resistors such as SMD chip resistors and SMD multilayer ceramic capacitors (MLCCs). It also offers product customization and e-catalog services to its customers. The company’s products are used by its clients in the telecommunication, consumer electronics, automotive, and military industries.
Dongguan Aillen Electronic Technology Co. Ltd. is a Chinese passive electronic components manufacturer and supplier that was established in Dongguan, Guangdong in 1995. The company’s product lineup includes film, aluminum electronic, farad, and ceramic capacitors for use with circuits, energy storage, or signal interference. It also offers inductors, resistors, and transformers for voltage isolation or conversion. The company’s products are commonly used by its clients in the consumer electronics, telecom, smart grid, and private security industries.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Akahane Electronics Corporation |
14.9%
|
| 2 | KOA Corporation |
13.5%
|
| 3 | Japan Resistor Mfg. Co., Ltd. |
13.5%
|
| 4 | TY-OHM ELECTRONIC WORKS CO.,LTD |
12.2%
|
| 5 | FUKUSHIMA FUTABA ELECTRIC CO.,LTD. |
9.5%
|
| 6 | Teikoku Tsushin Kogyo Co., Ltd. |
9.5%
|
| 7 | Dongguan Aillen Electronic Technology Co., LTD |
8.1%
|
| 8 | YAGEO |
8.1%
|
| 9 | Thunder Components Ltd. |
5.4%
|
| 10 | ALPHA WAVE Inc. |
5.4%
|
Derivation Method
The ranking is calculated based on the click share within the cement resistor page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
6 | 75.0% |
|
Taiwan
|
2 | 25.0% |
21 products found
21 products
Seiden Techno Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
■Features ・We can meet a wide range of needs with a wide range of resistance values and power values. ・Can be manufactured from 10mΩ. ・We have...
FUKUSHIMA FUTABA ELECTRIC CO.,LTD.
40+ people viewing
Last viewed: 23 hours ago
Very Fast Response
■Features ・Compact, non-flammable, insulated and safe design ・Low resistance value and strong against surge current. ■Applications Stabilized po...
Seiden Techno Co., Ltd.
20+ people viewing
Last viewed: 1 day ago
■Features ・We can meet a wide range of needs with a wide range of resistance values and power values. ・Can be manufactured from 10mΩ. ・A wide ...
FUKUSHIMA FUTABA ELECTRIC CO.,LTD.
30+ people viewing
Last viewed: 2 hours ago
Very Fast Response
■Features ・Compact size with flame-retardant design and insulating design ・Low inductance, stable and long life ■Applications Switching power su...
Tamaohm Co., Ltd.
470+ people viewing
Last viewed: 9 hours ago
Standard Response
■Features ・A wire-wound resistor with heat-resistant silicone cement sealed in a ceramic tube. ・Completely sealed with special cement in a highly...
6 models listed
FUKUSHIMA FUTABA ELECTRIC CO.,LTD.
50+ people viewing
Last viewed: 1 hour ago
Very Fast Response
■Features - Nonflammable, insulated safety design ・Highly reliable wire-wound axial cement-filled resistor with excellent surge characteristics ■...
Tamaohm Co., Ltd.
370+ people viewing
Last viewed: 10 hours ago
Standard Response
■Features ・A wire-wound resistor with heat-resistant silicone cement sealed in a ceramic tube. ・Completely sealed with special cement in a highly...
6 models listed
Seiden Techno Co., Ltd.
110+ people viewing
Last viewed: 15 hours ago
■Purpose Metal clad type wire-wound resistor The wire-wound resistor element is completely molded using special heat-resistant resin in an aluminum...
Rikyu Electric Co., Ltd.
20+ people viewing
Last viewed: 20 hours ago
■Features ・It is extremely safe as it is made entirely of non-flammable materials. - Suitable for power supply circuits due to its structure with ...
Rikyu Electric Co., Ltd.
20+ people viewing
Last viewed: 21 hours ago
■Features ・It is extremely safe as it is made entirely of non-flammable materials. - Suitable for power supply circuits due to its structure with ...
Rikyu Electric Co., Ltd.
20+ people viewing
Last viewed: 16 hours ago
■Features ・A resistor with a fuse function. - Excellent safety as all components are made of non-flammable materials. - Suitable for power supply ...
