What Have Been The Changes Since The Birth Of Optocouplers?

Since the birth of the first optocoupler device, the global optocoupler industry has gone through more than 50 years, and the global industrial landscape has become more stable: Japanese and American brands dominate the market with high-end optocouplers, while Taiwanese brands monopolize more than half of the production capacity of mid to low-end optocouplers. Chinese optocoupler brands, relying on the trend of "domestic replacement" in 2019, have gradually come to the forefront.
In the Chinese market, the highest sales are Japanese American optocouplers. Due to their high-order optocouplers, high technological content, and high product prices, their profit margins are naturally higher than the average. Representative manufacturers include FAIRCHILD, AVAGO, VISHAY, ISOCOM, OSRAM Opto, CLARE, and IXYS from European and American markets; TOSHIBA, RENESAS, NEC, Panasonic, SHARP, OMRON, KODENSHI, and more from Japanese and Korean cultures.
"It is worth noting that the 'high-order optocoupler' mentioned here is not a high-speed optocoupler, but an optocoupler product that can meet the needs of high-order applications. For example, Chen Dongsheng, the general manager of Huazhi Electric, who has been focusing on the optocoupler market for more than 20 years, gave an example. For example, EL817 and EL1018, the latter only have slightly better parameters than the former. However, as long as 1018 is replaced in an application that could have used 817, this product is considered a high-order product, and 1018 is defined as a high-order optocoupler.".
And the most representative optocoupler brand in China is Tiandian Optocoupler from Fujian, China. In terms of design, Tiandian Optocoupler
Has the most stable isolation characteristics, and the R&D and production teams have over ten years of experience in focusing on optocouplersTiandian is the world's leading packaging factory in terms of factory strength.