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电商部 
2026-01-16 16:49:33 Wide Temperature Technology of Industrial-grade Storage Cards: Surviving -40°C to 85°C
Industrial environments often experience extreme temperature fluctuations, from high temperatures in steel mills to low temperatures in outdoor northern areas. Industrial-grade storage cards’ wide temperature capability is not achieved by simple material replacement but through comprehensive optimization of chip selection, packaging technology, and circuit design, enabling them to operate stably between -40°C and 85°C (military-grade models can reach -55°C to 95°C).
In terms of chip selection, industrial-grade storage cards use custom industrial-grade NAND flash chips. These chips adopt high-stability polysilicon gates and silicon nitride dielectric layers, reducing leakage current at high temperatures and minimizing charge drift at low temperatures. This design ensures accurate data reading and writing even in extreme temperature conditions, avoiding errors or hardware damage.
Packaging technology also plays a vital role in wide temperature resistance. Industrial-grade storage cards use enhanced sealing packaging, combined with metal casings or special high-temperature and corrosion-resistant coatings. This not only improves heat dissipation but also protects against humidity, dust, and chemical gases. Some high-end products obtain IP67 waterproof and dustproof certification, adapting to harsh industrial environments.
Circuit design is another key factor. These cards are equipped with wide-voltage adaptation modules (1.7V-3.6V) to cope with power fluctuations in industrial equipment. They also undergo rigorous temperature cycle tests (1,000 cycles from -40°C to 125°C) and high-temperature and high-humidity tests (1,000 hours at 85°C/85% RH) to ensure long-term reliability. In contrast, consumer-grade cards lack such optimizations and easily fail when temperatures exceed 0°C-70°C.
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