Sustainability | EnvironmentEffective Use of Resources

Background of the Goals

Amid the need to shift to a circular society, from the perspective of the effective use of limited resources, TDK achieved its own standard of zero emission* in fiscal 2007 and, since then, has maintained this level and promoted initiatives to curb the discharge of waste itself. In addition, TDK makes regular visits to recycle businesses to check that recycling is being conducted properly.

  • At TDK, zero emission is defined as not processing any waste discharged from business sites by simple incineration treatments or placing it into landfills and eventually recycling 100% of resources (excluding items that cannot be recycled alone due to legal restrictions).

Fiscal 2022 Goals and Achievements / Evaluations and Future Activities

Fiscal 2022 Goal Achievements
Improve waste intensity by 1.5% compared with the previous fiscal year Improved by 14.9% compared with the previous fiscal year

Evaluations and Future Activities

The total amount of waste in fiscal 2022 increased by 9.4% compared with the previous fiscal year to 147,615 tons due to increased production volume. In terms of waste discharge intensity, the target was achieved with a 14.9% improvement compared with the previous fiscal year.
Going forward, we are committed to promoting comprehensive process improvements and continued efforts to reduce waste in terms of both efficient utilization of resources and improvement in the yield rate.

Fiscal 2022 Progress

Trends in Amount of Waste (Global)
total emissions graph 2022


Promotion of Circular Economy Activities

Reuse of PET Films (Multilayer Ceramic Capacitors)

For the first time in the electronic components industry,*1 TDK succeeded in building a recycling system for the reuse of PET films used in the manufacturing process of multilayer ceramic capacitors (MLCCs).
Normally the surfaces of PET films used when applying dielectric paste in the MLCC manufacturing process undergo special processing, so after use in the manufacturing process, they are mainly thermal-recycled or incinerated.
In the new system, however, the surfaces of waste PET films are washed, returned to PET plastic form (as pellets), and then formed into films at Toray Corporation (based in Chuo-ku, Tokyo), which is TDK’s partner in this project. TDK then purchases these films and applies special processing to them, thereby enabling their reuse in the MLCC manufacturing process. The recycled PET films used in this system reduce CO2 emissions by about 10%*2 compared with conventional PET films.

  • *1 As of December 2021; TDK investigations
  • *2 Meaning CO2 emissions in the PET film manufacturing process; Toray investigations

Initiative from Product Design (Power Inductors Using Recycled Materials)

The CLT32 series of power inductors uses recycled iron and recycled copper; more than 40% of a product consists of recycled materials. In addition, silver is not included in this series, and the amount of nickel contained is small. The characteristics of the compact products are their high output, low energy consumption, and long life. These power inductors have been certified as Super Eco Love products.*

*Among environment-conscious products, TDK certifies products that have a substantial effect in reducing the environmental load and lead others in the industry as Eco Love products. And among these Eco Love products, we certify products that have an especially substantial effect and are positioned at the top level in the industry as Super Eco Love products.

super eco love products

Reduction of Waste and Lightening of the Environmental Load Through Recycling (Berlin, Germany)

Reduction of CO2 emissions in the waste treatment process

TDK Sensors AG & Co. KG in Berlin received a Sustainability Certificate in recognition of its achievements in reducing CO2 emissions related to the entire waste treatment process, giving consideration to everything from waste subcontractors to transportation, and saving resources through recycling.

Saving resources through recycling

The facility also received an Environmental Protection Certificate in recognition of its achievements in saving resources and reducing CO2 emissions through the reuse and recycling of toner cartridges.

Reduction of input resources through improved production efficiency

As part of its efforts to improve productivity, TDK is endeavoring in various ways to reduce the amount of input resources, including cost reduction and yield improvement. In particular, regarding energy, TDK is engaged in lower energy (LE) activities, which promote the efficient use of energy resources, from the standpoint of production technology.

In fiscal 2022 TDK promoted LE activities mainly in the Japan area. At the Honjo Factory East Site, such activities as applying time control to exhaust ventilators, conducting intermittent compressed air discharge for packaging machines, and shortening running-in operations led to a 5% reduction in the site’s total energy consumption. There was a total of 230 activities, including 138 energy-reduction activities and 24 activities aimed at reducing input materials.

TDK will continue to proactively promote LE activities and strive to facilitate the efficient use of resources.