About TDK

TDK Code of Conduct

Chapter 2 : Corporate Ethical Philosophy

Corporate Philosophy

In 1930, at Tokyo Institute of Technology, Drs. Yogoro Kato and Takeshi Takei invented “Ferrite,” a magnetic ceramic compound containing oxides of iron and other materials.

Dr Kato’s statement that “innovative work is the source of true industry,” inspired Kenzo Saito to found TDK Corporation (originally known as Tokyo Denki Kagaku Kogyo K.K.) on December 7, 1935, with the purpose of marketing this original material invented in Japan.

At the time, as it was yet unclear whether “ferrite” would have a future or not, this act demanded “courage” and the will to pursue a “vision.” As a result of joint research by the Tokyo Institute of Technology and TDK, a product called “ferrite core” was produced and applied for the first time worldwide in 1937 in a number of Japanese wireless communication units and radios. By the end of the World War II, as many as 5 million units had been shipped by TDK, thereby creating a foundation of trust in the company.

The spirit of creating entirely new products of value from the fundamental level of a material has defined TDK from the beginning and is still a trait that sets the company apart. It is also reflected in the Corporate Motto formulated in June 1967: “Contribute to culture and industry through creativity.

TDK’s first president, Kenzo Saito

TDK’s first president, Kenzo Saito

TDK’s first president, Kenzo Saito	Father of ferrite: Dr. Yogoro Kato (left) and Dr. Takeshi Takei (right)

Father of ferrite: Dr. Yogoro Kato (left)
and Dr. Takeshi Takei (right)

Corporate Motto Contribute to culture and industry through creativity Corporate Principles "Vision" "Courage" "Trust"

Always take a new step forward with a vision in mind. Creation and construction are not born without vision.


Always perform with courage. Performing power is born by confronting contradiction and overcoming it.


Always try to build trust. Trust is born from a spirit of honesty and service.

Implementation of the Corporate Motto

TDK must earnestly apply its Corporate Motto in carrying out corporate activities. By pursuing creativity and consistently providing products and services that create new value, we offer satisfaction and dependability to our customers and all of our stakeholders. With their support, we also contribute to the development of a sustainable society by helping to resolve social issues.
To this end, TDK Members shall take initiative and implement the following principles, recognizing that applying the Corporate Motto is an important part of their role:

  1. TDK Members shall respect the character and individuality of each employee and pay heed to values and opinions that differ from those of the TDK Group.

  2. TDK Members shall always be aware of wider issues and pursue the true facts of any situation.

  3. TDK Members shall be active, courageous, and tenacious in efforts to resolve social issues.

  4. TDK Members shall pursue work creatively as members of a manufacturing company.

"Development of Ferrite Materials and Their Applications" made substantial contributions to the global electronics industry. In 2009, TDK was awarded the honor of being designated an IEEE Milestone, so-called world heritage in technology.



The TDK Group promotes globalization for the purpose of strengthening its ability to deal with its customers and to develop technologies/products. In addition, the TDK Group, which respects  the individuality of each employee, strives to secure and educate people from various backgrounds regardless of their nationality, gender, creed, and social status. It is also essential to share the same organizational culture, such as ideas, behavior, and a sense of value of other members within the same organization in order to work at an organization. An organization's culture can function as the pivot that links the organization and individuals together, and also as a source of corporate competitiveness. The TDK Group consists of TDK and a number of consolidated subsidiaries. Among the various organizations and their cultures within the TDK Group, TDK’s Corporate Motto and Corporate Principles are the most important things. Thus, whenever TDK Members engage in their work, they are required to keep in mind TDK’s Corporate Motto, as the common corporate culture of the TDK Group, and to strive to implement the same. Specifically, TDK Members must embody the spirit of “ONE TDK”; they are required to: (i) always think and act as a member of the TDK Group; (ii) unite, as necessary, by breaking barriers between organizations or divisions; and (iii) continue to attempt to create new value for the benefit of customers and, further, for the purpose of making a better society.

COLUMN TDK: Born from Angora rabbits

Prior to founding of TDK, TDK’s first president Kenzo Saito tried various businesses; failing many times in his effort to realize his dream to improve things in the impoverished farming town where he was born in Akita, Japan. Winter is especially harsh in Akita, and because there was no industry besides agriculture, the local people were forced to live a hard subsistence existence. It always seemed like being on the verge of life and death. His desire to help change this sad reality was the real momentum that drove him to try and succeed at any cost

An Angora fur business was one of Saito’s many early endeavors. However, this business did not go smoothly and he was unable to find any customers. Determined to find a way, Saito grabbed a few Angora fur samples and jumped on the night train to Tokyo. He wanted to meet directly with the President of Kanegafuchi Spinning Company, which was a leading business in the textile industry. Despite having no prior appointment, he was granted three minutes with company President Shingo Tsuda. And so impressed was he with Saito’s fervent explanation regarding the merits of Angora fur that an hour passed before Tsuda noticed the time. Then, he accepted Saito’s business proposal, pledging additional funds for the business.

In the end, the Angora fur business failed. However, Tsuda was greatly impressed by Saito’s passion and commitment to his ideals. Later, Tsuda would provide a large amount of money to help Saito start TDK in what was a difficult time because he believed in Saito’s possibility as entrepreneur.

If not for the meeting between Tsuda and Saito through Saito’s Angora fur business, today’s TDK would not exist. Saito later recalled, “A person can make their business into a success by working with a strong sense of social values and with the dedication to never give up no matter what obstacles they may face.”

Angora rabbit
Angora rabbit

Indigenous to the region of Angora in Turkey (from which the capital of the country Ankara derives its name) the fur has been improved through breeding in England and France. The rabbits have a long, soft coat, from which about 500g of fur can be gathered by sheering 3 to 5 times a year. Since the fur is both light weight and highly heat retaining, it is used for high-quality fabrics and knitting wool.

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