Taiyo Yuden Brand Guidelines: Sun Dielectric, Tiny Capacitors & the First CD-R

A ceramics researcher starts a company in 1950.

Taiyo Yuden is a Tokyo maker of electronic components founded in 1950. Its company history says Hikohachi Sato, who had been researching ceramic materials since before the war, established Taiyo Yuden Co., Ltd. on 23 March 1950, with its head office in Suginami, Tokyo, on the belief that a business should start from material development and move on to products. English Wikipedia gives the same founder and date, and translates the Japanese name as “Sun Dielectric” — a dielectric being the insulating material at the heart of a capacitor.

Its first products were ceramic capacitors. The company says it worked on titanium oxide ceramic capacitors and, in September 1950, commercialised a barium titanate ceramic capacitor called Rutilcon, which raised capacitance by nearly two orders of magnitude over earlier products. In 1954 it began making small ferrite cores from nickel-zinc ferrite for the intermediate-frequency transformers of transistor radios, and from 1965 it made inductors — coils — wound on its own ferrite.

Production grew in Gunma Prefecture, north-west of Tokyo. The company opened its Takasaki Plant in 1956, its Haruna Plant, a base for materials research, in 1958, and its Nakanojo Plant in 1969. Its first overseas subsidiary, Taiwan Taiyo Yuden, followed in 1967, then a Korean company in 1972 and a Singapore one in 1978, with sales companies in Hong Kong, the United States and West Germany during the 1970s. Its shares were listed on the Tokyo Stock Exchange in 1970 and moved to the First Section in 1973, the company says.

Ceramic layers and recordable discs.

Two strands run through the company’s history: small ceramic components and recording media. On the components side, Taiyo Yuden says it commercialised the world’s first axial leaded ceramic capacitors in 1976 and, in July 1984, the world’s first high-capacitance multilayer ceramic capacitor (MLCC) with nickel internal electrodes; we give those firsts as the company’s claims. An MLCC stacks thin ceramic layers with metal electrodes between them, and in 2014, the company says, it stacked more than 1,200 layers in one part. Its history page traces a steady shrinking of sizes, down to an MLCC of 0.25 by 0.125 millimetres in 2015.

The second strand made the name known to consumers. English Wikipedia says the company introduced That’s-branded audio tape in 1982, and that in October 1988 it presented the first CD-R to the public under the name That’s CD-R. Taiyo Yuden calls it the world’s first write-once optical disc and says the term “CD-R” was its own coinage. In 1987, English Wikipedia says, it formed START Lab with Sony to sell CD-R media in Japan. DVD-R followed in 1998 and, in 2008, a recordable Blu-ray disc with an organic dye layer, which the company again describes as a world first.

The discs ended in 2015. On 11 June 2015 Taiyo Yuden announced that it would leave the recording media business, the Japanese manufacturing site MONOist reported the same day, with sales of its CD-R, DVD-R and BD-R products ending in December 2015. MONOist wrote that the discs had been made throughout at the subsidiary That’s Fukushima, that “made in Japan” reliability had been their strength, and that the company also made discs for many other media brands under contract. It gave the shrinking market, as hard drives, USB memory and cloud storage grew, as the reason. That’s Fukushima turned to electronic components and, the company says, was renamed Fukushima Taiyo Yuden in July 2015.

Passive components.

Passive components are hard to photograph and harder to brand. A multilayer ceramic capacitor in the smallest sizes is a speck that sits like a grain of sand on a fingertip, and a scatter of chips on a fingertip is one way to show that scale. Resistors, inductors, filters and fuses look little different from one maker to the next, so the presentation leans on the company’s name, its colours and the way it pictures the work behind the part.

The pictures repeat across the trade. Reels of tape-and-reel parts, ready for pick-and-place machines, stand for volume. Through-hole resistors with their coloured bands, cut-away capacitors that open up the layers or the wound film inside, and close-ups of ceramic sheets being stacked stand for the craft. Automated inspection lines, with cameras checking each part, stand for consistency, and pictures of factories and laboratories often stand in for the end products the parts go into.

Trade shows are where these brands meet engineers in person. electronica in Munich and CEATEC in Japan are among the fairs where component makers take large stands, and some use them for showpieces that have little to do with a datasheet: Murata, for one, says it demonstrated its bicycle-riding Murata Boy robot at CEATEC JAPAN 2005.

Many of these companies began with a material rather than a product: ferrite, titanium oxide, barium titanate, tantalum or film. Several have changed hands or merged, so names, marks and owners do not always line up. This guide sets out who founded each brand, who owns it now and where it says its parts are made, and marks clearly what rests only on the company’s own word.

From discs back to components.

Today Taiyo Yuden presents itself through capacitors, inductors and modules. In 2010 it took over the communication-device business of Fujitsu Media Devices, adding FBAR and SAW filters for mobile phones, and in April 2018 it made ELNA, a maker of aluminium electrolytic capacitors, a wholly owned subsidiary, the company says. Its metal power inductors have been sold under the MCOIL name since 2012, and in 2025 it introduced embeddable MLCCs that it says are intended for AI servers.

Its factories are spread across Asia. The company says it opened its first overseas MLCC plant, in Sarawak, Malaysia, in 1994, and started production bases in Malaysia, the Philippines, Korea and China almost at once in 1999 and 2000; English Wikipedia lists factories in Japan, Singapore, Korea, China, the Philippines, Taiwan and Malaysia. The head office moved to Kyobashi, in Tokyo’s Chuo ward, in 2017, and the shares moved to the Prime Market of the Tokyo Stock Exchange in April 2022. English Wikipedia lists the company as a constituent of the Nikkei 225 index. It also runs a women’s softball team, founded in 1984, which it says has played in Japan’s top league since 1987.

On its own websites the name is set in capitals, TAIYO YUDEN. The palette here — a deep blue for the dielectric and an amber for the sun in its name — is our own interpretation.

For a design guide, Taiyo Yuden shows how a component maker can carry a consumer name for decades and then let it go. Compare Murata, another Japanese ceramic-capacitor maker, and TDK, a Japanese components maker that also sold recording media. For this guide we use a deep blue and a warm amber with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Taiyo Yuden’s identity on hand — save it to a board in the Made Good inspiration library.