AIW 220℃ Insulated 2mm X 0.25mm Flat Copper Wire

Self-bonding 0.25mm × 2mm AIW flat enameled copper wire engineered for high-density windings, high-frequency transformers and compact power electronics.

This rectangular enameled copper wire combines a 220℃ thermal-class AIW insulation system with a self-bonding layer, delivering a high space factor, low conductor resistance and stable performance under high-frequency and high-temperature operating conditions. Custom thickness and width options are available to match specific winding designs.

• Meets design requirements for lower height, smaller size, lighter weight and higher power output, making it suitable for electronics, electric applications, motors, network communication, smart home devices, new energy systems, automotive electronics, medical electronics and aerospace.
• Larger surface area than round wire at the same cross-section, effectively reducing skin effect and current loss for improved high-frequency transmission.
• High space factor and fill-in ratio greatly reduce resistance, allow higher current carrying capacity and deliver a higher Q value for high-current loads.
• Rectangular wire construction offers simple structure, efficient heat dissipation, stable performance and consistent quality.
• Maintains stable temperature-rise current and saturation current in high-frequency and high-temperature environments, with anti-EMI behavior, low vibration, low noise and high-density installation capability.

Rectangular enameled copper wire achieves up to 97% fill-in ratio, maximizing the amount of conductor inside a given winding window. The result is a more compact magnetic component with lower resistance and higher efficiency.

• High bending resistance with no cracking under winding stress.
• Insulation thickness at the corners is similar to the flat surface, making it easier to maintain insulation integrity.

• UL
• RoHS
• REACH
• ISO 9001
• IATF 16949

Since 2002, Rvyuan has partnered with leading global brands and companies — including TDK Lambda, Samsung and Hitachi Energy — supplying a broad range of wire products such as Litz wire, rectangular enameled copper wire, TIW wire, FIW wire and special alloy wire. Small and medium-sized enterprises are supported with end-to-end custom service and reasonable minimum order quantities for custom designs. Customer-oriented at every stage, we deliver top-quality products that facilitate your business.

The factory covers more than 8,000㎡ across two dedicated facilities — a wire drawing plant and a wire enameling plant — operated by 200 experienced staff. Seven core quality control systems ensure consistent output, and product quality has been repeatedly confirmed by external auditors through numerous certifications.

• 120℃ flat enameled wire for oil-immersed transformers.
• 130℃, 155℃ and 180℃ flat enameled wire widely used in all types of magnet coils.
• 200℃ flat enameled wire for continuous high-temperature operation.
• 240℃ flat enameled wire for magnet coils in aviation and marine applications.