Custom Polyimide(PI) Circuit board components Core Advantages of PI (Polyimide) Extreme High-Temperature Resistance: Thermosetting PI can be used continuously at temperatures ≥260°C and can withstand short-term exposure to temperatures above 500°C. Thermoplastic PI (TPI) can also operate continuously at 240°C, ranking first in thermal stability among the four types. Excellent Electrical Insulation: Low dielectric loss, high breakdown voltage, stable insulation performance under high-frequency an