Views: 0 Author: Site Editor Publish Time: 2025-06-19 Origin: Site
In today's rapidly evolving technological landscape, pressure sensors, as key components for acquiring pressure information, are widely applied across various industries. Among them, silicon piezoresistive pressure sensitive chips adopting SOI (Silicon-on-Insulator) technology have gradually become the industry's focus, leveraging their superior performance. In the fiercely competitive arena of sensor technology, SOI technology-based silicon piezoresistive pressure sensitive chips stand out as the irreplaceable "performance kings" in the industry, relying on three core advantages!
I. Exceptional Performance for Remarkable Quality
Traditional pressure sensors often see significant performance degradation or even failure in high-temperature environments. In contrast, SOI technology-based silicon piezoresistive pressure-sensitive chips stand out with distinct advantages. Their sensitive elements adopt dielectric isolation without PN junctions, a unique design that overcomes the critical flaw of PN junctions—where leakage current increases with temperature, leading to performance degradation or failure.
＊Key Data: At 250°C, the leakage current of SOI chips is only 0.1% of that in traditional chips. They have been verified to operate continuously for over 1,000 hours without degradation, while ordinary chips suffer a 20% accuracy drop at 150°C.
The piezoresistive strips fabricated with SOI monocrystalline silicon film exhibit remarkable sensitivity, offering distinct advantages over polysilicon resistive strips. Notably, they maintain excellent piezoresistive effects even in high-temperature environments.
Performance Data:Sensitivity of monocrystalline silicon film piezoresistive strips reaches 150mV/MPa, 3 times higher than polysilicon materials.
The SOI structure optimizes the signal-to-noise ratio to 120dB, ensuring data fluctuation within < ±0.01%FS under strong electromagnetic interference—far exceeding industry standards.
With the same dimensions, the leakage current of the SOI structure is three orders of magnitude lower than that of silicon PN junctions, endowing the chip with outstanding stability and anti-interference capability. It can operate stably without being affected by external disturbances, whether in industrial sites with strong electromagnetic interference or complex and changeable natural environments.
Take petroleum logging as an example: the downhole environment is complex, fraught with various electromagnetic interferences. The SOI silicon piezoresistive pressure-sensitive chip can stably measure downhole pressure in such harsh conditions, meeting the rigorous requirements of high temperature, high precision, and corrosion resistance. This provides accurate data for petroleum extraction and reduces exploitation risks.
In the automotive sector, this chip boasts extensive application prospects. It can be directly used in manufacturing intake manifold pressure sensors for vehicles, accurately measuring pressure within the intake manifold to help engines better control fuel injection volume, improve fuel efficiency, and reduce exhaust emissions.
Meteorological research imposes extremely high requirements on the precision of pressure measurement. The SOI silicon piezoresistive pressure-sensitive chip can be directly applied to radiosondes for measuring atmospheric altitude. Its high-precision characteristics can effectively enhance the accuracy of atmospheric detection, helping meteorologists more accurately grasp the laws of atmospheric changes.
In industrial production, the requirements for the stability and reliability of pressure sensors are extremely strict. This chip can be used in the production of OEM oil-filled pressure sensors to replace the existing packaging cores of pressure sensors, significantly enhancing the stability and reliability of the sensors. In numerous industrial scenarios such as chemical engineering, electric power, and mechanical manufacturing, it can accurately measure various pressure parameters, providing critical data support for the automated control of industrial production processes. This ensures the efficient and stable operation of production processes and improves product quality and production efficiency.
Petroleum logging operates in harsh environments characterized by high temperatures, high pressures, and strong corrosiveness. The SOI silicon piezoresistive pressure-sensitive chip perfectly adapts to downhole conditions, leveraging its high-temperature resistance, corrosion resistance, and high-precision features.
We specialize in the R&D and manufacturing of SOI technology-based silicon piezoresistive pressure-sensitive chips, supported by a professional technical team and advanced production equipment. Guided by customer needs, we consistently pursue technological innovation and product quality enhancement. Our products undergo rigorous quality testing, ensuring exceptional performance and reliable quality.
Whether you are an automotive manufacturer, meteorological research institution, industrial enterprise, or petroleum extraction company, our SOI silicon piezoresistive pressure-sensitive chips are your optimal choice. They will endow your products with superior performance, provide robust support for your business growth, and join hands with you to create a brighter future.
