Nihon Dempa Kogyo Co., LTd.
Headquarters: England
Region(s) Served: APAC, EMEA, Latin America, North America
Since its founding in 1948, Nihon Dempa Kogyo Co., Ltd. (NDK) has operated under a philosophy of “contributing to social prosperity and world peace through our service to customers.”
NDK’s quartz crystal devices provide an accurate and superior oscillation source that is absolutely essential to crystal components. As the era of the ubiquitous networked society unfolds, the Company’s crystal devices are being utilized in diverse applications, ranging from mobile communications and fixed radio communications to office automation, audiovisual, and automotive electronics equipment.
With its lineup of high-precision, high-reliability, compact crystal devices that anticipate the next generation of customer needs today, NDK has grown to become the leading company among quartz crystal device manufacturers in the world. Under the banner of “quality, cost, and speed,” NDK aims to establish itself as the industry’s technology leader and the most trusted customer brand.
NDK will continue to provide high-value-added products and high-quality service to its customers throughout the world, increase its enterprise value, and live up to the expectations of its stakeholders, including shareholders, customers, and local communitiesensive embedded software solutions tailored to client needs
Products
Crystal Device
Crystal unit is a passive component using piezoelectrical effect of the crystal. By applying the voltage, transformation occurs in the crystal and it oscillates frequency of high-stability with the natural resonant frequency of vibration.
NDK devices made by top-quality synthetic quartz crystals are adopted by many automotive field which needs high stabilities.
Crystal Oscillator
NDK offers a wide variety of cutting-edge products and supports customized designs to meet individual needs, providing crystal oscillators optimized for customer applications.
NDK's crystal oscillators are designed by utilizing synthetic quartz crystal growing technology and photolithography technology, and have achieved excellent performance in the areas of high precision, low jitter, and low noise characteristics for 5G base stations and smartphones, and high quality and high reliability requirements in automotive devices.
We have also developed a crystal oscillator for automotive applications.
Also, there is a large lineup of automotive crystal oscillators that comply with the standards of the Automotive Electronics Council (AEC).
NDK will continue to lead the industry and support the development of electronics as a top manufacturer of crystal devices with high reliable, high quality, and high precision products.
Synthetic Quartz Crystals
This is an ultra high purity optical synthetic quartz crystal manufactured using high purity materials with thorough quality control in optimized growing conditions. With the impurity concentration, linear defect density, and inclusion density in crystals minimized to the utmost limit, this is an ultra high purity product graded as top class in all categories of the "JIS C 6704" synthetic quartz crystal quality standard. Due to its extremely high purity, it is possible to bring out the natural characteristics of the quartz crystal to the utmost limit. Effect of maintaining high resistance and high transmittance for high output and short wavelength lasers, low defect generation effects against irradiation, and excellent characteristics as optical components for use in space and in radiation environments, and as high-stability crystal units can be expected from this synthetic quartz crystal.
The grade table for N-Grade EX and standard products (comparison) is shown in Table 1. Compared to standard products, the impurity content is extremely low.
The infrared transmittance characteristics of N-Grade EX are shown in Figure 2. Compared to standard products, there is very little absorption at 3585 cm-1, which indicates the presence of impurity OH groups typical of quartz crystals.
