Japan Finechem
Formulating High Resistors for Semiconductor Industry

In a world propelled by revolutionary advancements, intricacies of high precision, high voltage instruments are a core element in critical applications like medical or semiconductor equipment manufacturing.

Recognizing their significance in the current landscape, Japan Finechem is a reliable partner that manufactures and supplies precision subassemblies comprising high-voltage resistors with applications across multiple sectors.

Located in Tokyo, it is the only manufacturer specializing in high-voltage resistors in Japan. The firm began as a solid-resistor manufacturer that uses special Japanese resins from Japan Gas Chemical (currently Mitsubishi Gas Chemical) in 1964. Fast forward to 1970, and Japan Finechem introduced the metal glaze resistor, a product that steadily gained market share and now stands as its flagship product.

“In the high-precision and high-voltage fields, our resistors are highly valued, contributing as an important component in industrial equipment such as high voltage power supply, X-rays, and electron microscopes,” states Hiroyuki Otsuka, president of Japan Finechem.

Most of its products are made-to-order and characterized by high-mix, low-volume production competencies tailored to customers.

The catalog comprises 500 resistor types, comprising surface mount, lead, power, and resistor boxes. Overall, the company manufactures over 10,000 products with an annual production volume reaching 100 million units.

In quantitative terms, its resistors typically boast a resistance value of 10^15 ohms, a noise level of 0.3 ppm: parts Per Million or less, and an effective tolerance to withstand up to three hundred thousand volts. The accuracy and precision of these offerings illustrate why they are used within some of the most renowned machinery.

For instance, the world’s highest-resolution electron microscope employs Japan Finechem’s resistors to obtain the desired image. Additionally, special high-voltage probes in the National Research and Development Agency facilities use its resistors to measure ground-referenced signals of up to 50 kV and achieve the anticipated features.

Japan Finechem has equipped its manufacturing units with appropriate safety features. The factories are fully furnished with interlock functions, which is a protective response triggered during a hazard that ensures different parts of a process work in harmony. It also periodically conducts safety education, training, and risk prediction activities to promote better and timely disaster prevention.

Standing out from contemporaries, Japan Finechem has won many accolades. A notable one is its collaboration with Japan’s National Institute of Advanced Industrial Science and Technology, Japan Telegraph and Telephone Co., Ltd., Tokyo Institute of Technology, and the National Institute of Advanced Industrial Science and Technology (AIST), which led the company to secure a spot in the 2023 ‘NEDO Leading Research Program/Leading Research Program for the Creation of New Industries and Innovative Technologies.’ The company will focus on ‘Pioneering Quantum Traceable Ultra-Microcurrent Sensing.’

Japan Finechem is proud to possess the technology to manufacture ultra-high resistors with the highest accuracy and stability in the world. With its innovative and one-of-a-kind customized solutions, the company continues to drive stronger customer-centric collaborations and offer best-in-class, tailor-made solutions that contribute to transforming the power electronics industry.