China Rigid Copper Busbar with Polyimide Film Insulation - High-Performance Suppliers & Factory Solutions

C11000/C10100 grade copper offering superior electrical performance with ≥98% IACS.

Thickness from 0.05–0.125mm (customizable), significantly thinner than dip or extrusion coating with near-zero added dimensions.

Smooth PI surface enables direct stacking without spacers, optimizing space for multi-layer assemblies and battery modules.

Reliable operation from -70℃ to +260℃, outperforming PVC and PA12 in high-heat motor connections and high-power charging.

Dielectric strength >150kV/mm; a single 0.05mm layer withstands >7500V. Certified UL94 V-0 flame rating.

Highly resistant to acids, oils, organic solvents, gamma rays, and electron beam irradiation for aerospace and nuclear sectors.

Engineered for dynamic connection scenarios requiring tight bending or continuous vibration resistance.

Maintenance Instructions

• Inspect PI film surface for scratches, peeling, or mechanical damage every 6 months.
• Clean with a dry soft cloth or anhydrous alcohol; avoid strong acids and alkalis.
• Prevent sharp objects from scratching the film surface to ensure insulation integrity.
• Store in a dry, dark, controlled environment for optimal long-term preservation.

Service Life & Durability

Designed Service Life: ≥15–20 years (depending on mechanical wear and thermal cycling conditions).

Polyimide (PI) film exhibits minimal natural aging. To maintain dielectric safety, sharp copper edges and burrs must be thoroughly removed prior to processing to prevent film piercing.