Product type: enameled wire (also known as insulated copper wire) Construction: inner layer of pure copper; surface insulating paint; polyester patent leather Packing: 1 x enameled wire (500 g / 17.6 oz) Temperature and voltage resistance: Voltage withstand: 3000 V – 5000 V Temperature range: 130°C – 180°C Key benefits: can be directly welded; performs well at frequency; portable and easy to carry Color and size information: Color classification shown by the system corresponds to the wire diameter (specification) The copper wire uses national standard specifications Specification note: Specification refers to the diameter of the drawn copper wire, i.e., the inner diameter without the paint film 23 practical use scenarios: Coil winding and transformer construction where direct welding is beneficial and close tolerance is required frequency circuit work, including RF coils and inductors, where stable performance at elevated frequency is important Educational projects or hobby electronics that require portable, easytohandle enameled copper wire with reliable insulation Key benefits at a glance: Direct welding capability simplifies assembly and reduces processing steps Strong resistance to frequency, suitable for RF and speed applications Wide temperature range supports use in various environments Portable 500 g package provides adequate quantity for small to medium projects Clear, nationalstandard specifications help ensure compatibility and consistency across projects