Product Code Heat Resistance Solderability Features LSUEW E(120) ·Solderable at 300320. ·Easily soldered with a soldering iron. UEW E(120) ·Solderable at 360380. ·General purpose polyurethane enameled copper wire. CFUEW E(120) · Solderable at 360380. · Low emission of organic gas; longer life of contact points. UEY E(120) · Solderable at 370390. · Nylon overcoat reduces deterioration caused while working the wire. SF.BW F(155) ·Solderable at 370390. SF.BY F(155) · Solderable at 380400. · Nylon overcoat reduces deterioration caused while working the wire. PEW F(155) × ·General purpose polyester enameled copper wire. PEY F(155) × · Nylon overcoat reduces deterioration caused while working the wire. SF.FIW F(155) ·Solderable at 400420. SF.FLW F(155) ·Solderable at 410430. SF.FLY F(155) · Solderable at 420440. · Nylon overcoat reduces deterioration caused while working the wire. SF.EIW H(180) ·Solderable at 450460. ·Higher heat resistance than SF.FLW. EIW H(180) × · Class H magnet wire. · Widely used for various heat resistant electrical apparatuses. THW C(200) × · Magnet wire with two layers of coat, EI and AI. · Excellent resistance to abrasion. AIW C(200) × · Class C magnet wire. · Excellent resistance to heat, abrasion and refrigerant. About Surface Treatment. Except smooth surface coating, the films of magnet wires lack lubricity, making it impossible to wind wires into coils. Therefore, the wire surface is treated for smoothness in two ways: liquid paraffin for general purposes and solid paraffin for further smoothness. The kind of treatment should be selected according to the type of coil winding machine used. Types of surface treatment ·General type ·Type for automatic taping ·Type for motor coil winding (Treatment-L)