20 Gauge Enameled Copper Wire
Thermal class: 180℃, 200℃, 220℃, 240℃
Dimension: 0.812 mm
20 Gauge Enameled Copper Wire, is a pure copper conductor coated with a thin, uniform layer of insulating varnish. While seemingly insignificant to the naked eye, this layer effectively prevents short circuits between turns in the coil, making it a core material in the manufacture of various electronic and electromagnetic components.
| Feature | Advantages | Description |
| Excellent electrical performance | Conductivity | The high-purity copper core provides extremely low resistance, ensuring efficient current transmission. |
| Insulation | The paint film insulation layer can withstand higher voltage, effectively preventing short circuit between coil turns and ensuring stable operation of the coil. | |
| Excellent heat resistance | Various heat resistance grades | Common grades such as polyurethane (UEW), polyester (PE) and modified polyester (PEM) have different heat resistance levels (such as 130°C, 155°C, 180°C) to meet the needs of different working environments. |
| Perfect mechanical strength and flexibility | Balance of strength and flexibility | The thickness of 20 AWG makes it strong enough to not break easily when winding the coil, but also maintains good flexibility, which is convenient for tight winding by hand or machine. |
| High space utilization | Thin paint film, small footprint | Compared with wires insulated with plastic skin, the paint film insulation layer is extremely thin, which allows more turns to be wound in a limited space, thereby greatly improving electromagnetic efficiency. |
How to choose the right 20 AWG magnet wire?
Besides the specifications, you should also consider the following:
Insulating Varnish Type:
Polyurethane (UEW): Easy to solder, requiring no complete removal before soldering, making it suitable for high-frequency applications.
Polyester/Modified Polyester (PE/PEM): Offers improved mechanical strength and chemical resistance, making it the most versatile type.
Polyamide-imide (AIW): Offers the highest thermal rating and is suitable for use in high-temperature, harsh environments.
Spool Capacity:
Depending on your usage, common industrial spools include 1-pound (approximately 0.45 kg), 1-kg, or larger.
Brand and Quality:
Choose a reputable brand to ensure the copper wire is pure and the varnish is uniform and flawless, ensuring consistent performance.
Application：
| Application Areas | Specific application scenarios | Function Description |
| Solenoid coils and electromagnets | Door locks, relays, motors, generators | It is used to make the stator/rotor coils, which generate a magnetic field by passing electricity to achieve electromagnetic drive or energy conversion. |
| Transformers and Inductors | Power adapters, chargers, power equipment | As core winding material, it is used to achieve voltage conversion, current filtering and energy storage. |
| DIY & Crafts | jewelry making | Its flexibility and beautiful lacquer coating allow it to be used to create beautiful and structurally sound wire-wound jewelry. |
| Model making | Produce power and actuators such as micro motors and electromagnetic servos for dynamic models such as trains and robots. | |
| Artistic Creation | Serves as a strong and easily shaped internal skeleton to support sculptures or creative shapes. | |
| Speaker (voice coil) | High-fidelity speakers, headphones, speaker units | The voice coil wound with enameled wire moves in the magnetic field, driving the diaphragm to vibrate, and is a key component for direct sound production. |
20 AWG corresponds to a copper core diameter of approximately 0.812 mm. This specification strikes an excellent balance between mechanical strength, current carrying capacity and flexibility, making it one of the most widely used magnet wire specifications.