In high-end equipment sectors such as aerospace, defense, nuclear power, semiconductors, rail transit, and new energy vehicles, cables often face multiple simultaneous extreme conditions—including ultra-high temperatures, cryogenic temperatures, intense radiation, and ultra-high vacuums. Traditional wrapped polyimide cables are prone to issues like insulation cracking, performance degradation, and structural instability, making it difficult for them to meet the demands of long-term, reliable operation.
Leveraging mature extrusion technology, TST Cable has launched its TST-PI series of radiation-resistant and high-temperature resistant polyimide cables. With stable electrical performance and exceptional environmental adaptability, these cables provide highly reliable transmission solutions for demanding applications.
01 Core Product Features
Seamless Extruded PI Insulation: Replaces traditional wrapping processes with a seamless extruded polyimide insulation layer. The structure is uniform and dense—free from delamination or air bubbles—offering mechanical strength and insulation reliability significantly superior to traditional film-wrapped wires.
Ultra-Wide Temperature Range: Operating temperatures span from -269°C to 300°C. The material remains crack-free at cryogenic temperatures and does not soften at high temperatures, making it suitable for applications ranging from liquid helium and liquid nitrogen environments to high-temperature equipment compartments.
Superior Radiation Resistance: Capable of withstanding radiation doses of 10⁹ Rad (10⁷ Gy). In high-radiation environments—such as the nuclear industry, aerospace, and particle accelerators—the insulation does not crack, and performance remains undegraded.
Ultra-High Vacuum Compatibility: Suitable for UHV (Ultra-High Vacuum) environments (<10⁻¹⁰ mbar). Features low volatility and low outgassing, meeting the stringent cleanliness requirements of semiconductors, quantum research, and space simulation chambers.
Ultra-High Insulation Resistance: Exceeds 1×10¹⁶ Ω·cm. Offers stable voltage resistance and strong anti-interference capabilities, ensuring the precise transmission of high-frequency and low-current signals.
Versatile Structure and Easy Installation: Supports various configurations, including single-core, dual-core, multi-core, and twisted-pair designs. With a minimum bending radius of 7.5 times the cable’s outer diameter, routing in confined spaces is effortless. Voltage ratings cover 300V, 600V, and 1000V to meet diverse system requirements.
High-Quality Conductors: Ensures stable signal transmission. Features silver-plated copper conductors (available in solid or stranded configurations) offering high conductivity, oxidation resistance, and excellent solderability.
02 Typical Applications
Aerospace and military equipment
Industrial variable-frequency motors and servo motors
Rail transit traction systems
New energy vehicle drive motors
Semiconductor manufacturing equipment
Deep-earth exploration and marine engineering
Cryogenic and ultra-high vacuum systems
Medical equipment and radiation-resistant wiring for the nuclear industry
TST PI (polyimide) cables offer key advantages—including extrusion-based manufacturing, an ultra-wide operating temperature range, superior radiation resistance, ultra-high vacuum compatibility, high insulation performance, and long service life. They serve as an ideal replacement for traditional wrapped PI cables and represent the preferred solution for signal and power transmission in extreme environments.
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