At present, the semiconductor industry has become a strategic highland for major countries in the world to compete for. Due to the late start, there are still many shortcomings in the development of China’s semiconductor industry, especially in the upstream equipment field, and some high-end equipment and core devices in equipment are still highly dependent on foreign brands.

For the field of semiconductor equipment, it is imperative to improve the localization rate and promote autonomy and control.

Set micro network learned that not long ago, a domestic photovoltaic equipment head supplier solved a key link – semiconductor equipment special cascade thermostat, the product successfully passed the production DSDX452L 5716075-U line verification of domestic photovoltaic leading enterprises, not only to achieve domestic replacement, but also to improve the photovoltaic yield better than foreign brand products, In the national scientific and technological achievements appraisal by industry experts assessed as international advanced.

It is reported that the cascade temperature controller is independently developed by Xiamen Yudian Automation Technology Co., LTD. (hereinafter referred to as: Yudian), a domestic manufacturer who has been deeply engaged in the field of temperature control for more than 30 years. The successful launch of the domestic cascade thermostat for semiconductor equipment has filled the domestic gap in this field over the past years. With the successful introduction in the PV manufacturing production DSDX452L 5716075-U line, the product will next expand into the broader semiconductor manufacturing field such as microelectronics, advancing the domestic instrumentation replacement of upstream semiconductor devices.

DSDX452L 5716075-U

Instead of foreign brands, domestic thermostats achieve breakthroughs in the field of photovoltaic semiconductors

Thermostat, as the name suggests, is a device that measures and regulates temperature. It reads the measured value of the temperature sensor and executes complex intelligent control algorithms through a computer program, using connected executive devices to precisely adjust the temperature of loads such as heaters. It is an essential core accessory for industrial production and automation production line.

Unlike ordinary PID thermostat, many links in semiconductor DSDX452L 5716075-U production equipment, such as diffusion, oxidation, etching, PECVD and other processes used in the cascade thermostat need high-end complex adjustment algorithms, in order to deal with the semiconductor equipment temperature control lag and more disturbance and other problems. As a high-end market for temperature controller applications, the semiconductor manufacturing field has very demanding requirements for product accuracy, reliability, anti-interference and stability of temperature controllers.

A PV manufacturing industry insider pointed out that the production line of crystalline silicon solar cells, temperature control is comparable to the soul. For example, the diffusion furnace needs to heat the temperature in the furnace to about 700℃-1040℃ at a certain heating rate, and to quickly stabilize the temperature fluctuation within ±0.5℃, which has extreme demanding requirements for the accuracy, reliability and stability of temperature control, and once the temperature deviation occurs, the product performance will be greatly reduced or even scrapped.

The high technical threshold makes it possible to enter the semiconductor field of cascade thermostat manufacturers are few, in the past, only a few brands such as Japan’s AZBIL, Britain’s PMA and the United States WATLOW’s EUROTHERM can meet the requirements. The newly launched AI-8 cascade thermostat for semiconductor equipment successfully entered the photovoltaic manufacturing field last year, becoming the only domestic thermostat company whose products have passed the verification of the photovoltaic semiconductor market