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This section provides an overview for electromagnetic wave absorption sheets as well as their applications and principles. Also, please take a look at the list of 6 electromagnetic wave absorption sheet manufacturers and their company rankings. Here are the top-ranked electromagnetic wave absorption sheet companies as of April, 2025: 1.Microwave Absorbers Inc., 2.Laird Technologies, Inc., 3.FURUKAWA ELECTRIC CO., LTD..
Table of Contents
An electromagnetic wave absorption sheet is one of the most commonly used EMC countermeasures for electronic equipment that generates electromagnetic waves or performs switching operations that may cause malfunctions due to exposure to electromagnetic waves, such as noise terminal voltage and disturbance power.
It is one of the most common EMC countermeasure items used in electronic equipment. Generally, the sheet is made of resin or rubber. The sheets can be cut into desired shapes and are inexpensive, lightweight, and easy to use, making them an indispensable part of EMC countermeasures.
An electromagnetic wave absorption sheet is mainly used as a countermeasure against EMC standards, as described in the overview.
EMC is a generally used sheet to suppress the noise within the regulation values or to block the noise when the product malfunctions due to external noise.
An electromagnetic wave absorption sheet utilizes the property of the magnetic material woven into the sheet to absorb electromagnetic waves and convert them into heat energy inside the sheet. Although the use of electromagnetic wave absorbers is not known, they are used in a wide range of fields, including shortwave broadcasting below 30 MHz as a countermeasure against communication interference in ship and aviation radios, and in the 30 MHz to 300 GHz band for FM, TV, cell phones, overseas satellite broadcasting, and personal radios, which are all widely used in society.
In addition, electromagnetic wave absorption sheets are used in a much wider range of applications than one might imagine, including microwave relay and various types of radar.
It is not well known that electromagnetic wave absorbing materials convert absorbed electromagnetic wave energy into heat energy, but there are different types of electromagnetic wave absorbing materials. It is classified according to the aforementioned balance of electromagnetic waves versus the bandwidth. Therefore, it is an important factor in material selection when using electromagnetic wave absorption sheets to select an absorber that is effective in the frequency band used for home appliances and for satellite communications in the frequency band used for satellite broadcasting.
*Including some distributors, etc.
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Microwave Absorbers Inc., founded in 2006 is a manufacturer of electromagnetic, RFID and microwave products based in Tokyo, Japan. Their products are Microwave Absorber Sheet, Microwave Broad Absorber Panel, Millimeter wave Broad Absorber Panel, Electromagnetic Wave Shield Cloth, Lightweight Shield Room and Anechoic Chamber and UHF-RFID Absorber Panel. The company has been a co-R&D in many institutes across Japan and participated in exhibits in America. They also have a local corporation in Hong Kong and received the Certification of ISO9001-2008 in 2014.
TAIYO YUDEN CO., LTD. was founded in 1950 and is headquartered in Kyobashi, Chuo-ku, Tokyo is a manufacturer of electronic components. The company offers a diverse product catalog including conductive polymer hybrid aluminum electrolytic capacitors, noise suppression components, and multilayer ceramic capacitors. These products have applications in telecommunication, automotive, and medical equipment. In 2023, the company announced that it had started mass production of three items in two sizes, including the multilayer metal power inductor.
FURUKAWA ELECTRIC CO. LTD. is based in Tokyo, Japan, and is a manufacturer of electronic and telecommunications products that was established in 1896 following the merger of Furukawa Mining Co. Ltd. and Furukawa Electric Wire Co. Ltd. The company primarily produces electric wire cable for power transmission as well as distribution applications, electronic parts for batteries, semiconductors and displays, and optical fiber for sensing applications and communication networks. The company is certified to ISO 9001, ISO 14001, ISO 45001, and ISO/IEC 27001 standards, and functions as the parent company of the Furukawa Electric Group.
Sekisui Polymatech Co., Ltd., established in 1947 and based in Saitama, Japan, is a plastics manufacturer of thermal gap filler materials. The company manufactures the following products: thermal-conductive sheets, thermal management greases, EMI solutions, connectors, input device accessors, waterproof and complex molding solutions and damping solutions for shock and vibration control. These products are used in cellphones, drones, and automobiles. Sekisui Polymatech has sites in China, Thailand, Japan, USA, Indonesia, and Netherlands for worldwide distribution.
Laird Performance Materials, also known as Laird PM, specializes in heat and EMI protection for advanced electronics in automotive, aerospace and defense, telecommunications, data infrastructure, precision and computing, medical, and consumer electronics industries. As a global organization, Laird PM, focuses on developing, manufacturing, selling, and supplying precision-engineered materials used by manufacturers to serve their electronic markets. Laird PM designs and develops products test and measurement instrumentation to create models and product performance simulations to improve product performance, reliability, and flexibility while reducing development time and cost.
KGS Kitagawa Industries Co. Ltd., established in 1963 and headquartered in Inazawa, Aichi, Japan, is a manufacturer of electronic components. The company offers a wide range of products, including EMC components for noise suppression and electromagnetic compatibility, plastic fasteners for securing PCBs and cables, vibration, shock & sound damping materials, thermal management materials, and sputtering functional thin films. The company has obtained ISO9001 certification, ISO14001 certification, IATF16949 certification, and ISO/IEC17025 accreditation.
Ranking as of April 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Microwave Absorbers Inc. |
26.5%
|
| 2 | Laird Technologies, Inc. |
23.5%
|
| 3 | FURUKAWA ELECTRIC CO., LTD. |
17.6%
|
| 4 | TAIYO YUDEN CO., LTD. |
14.7%
|
| 5 | KGS KITAGAWA INDUSTRIES CO., LTD |
11.8%
|
| 6 | SEKISUI POLYMATECH CO., LTD. |
5.9%
|
Derivation Method
The ranking is calculated based on the click share within the electromagnetic wave absorption sheet page as of April 2025. 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
|
4 | 100.0% |
