The 0.5mm QA-1-155 (2UEW) Polyurethane Enameled Copper Wire is a high-quality magnet wire widely used in motor repair, coil rewinding, transformers, solenoids, and electronic devices.
With its excellent solderability, heat resistance, and bright surface color, it is ideal for applications that demand both electrical precision and flexibility.
🔹 Product Overview
- Model: QA-1-155 (also known as 2UEW)
- Diameter: 0.50 mm
- Conductor: 99.97% Pure Copper
- Insulation: Polyurethane enamel coating
- Thermal Class: 155°C
- Color Options: Red / True Copper Color
- Length Available: 20 m / 100 m (custom lengths available)
This wire belongs to the polyurethane enameled wire series, known for its direct solderability—you can solder it without stripping the enamel coating first, saving time and improving efficiency in repair or manufacturing tasks.
🔹 Key Features
- Direct Solderability
The polyurethane (QA-1) coating melts easily under soldering temperature (~375°C), eliminating the need for mechanical stripping. - High Purity Copper Conductor
Provides superior electrical conductivity and low resistance, ensuring stable current flow and minimal energy loss. - Excellent Flexibility
The 0.5 mm wire is soft, easy to handle, and suitable for small coil or fine repair work. - Thermal Class 155°C
Performs reliably in moderate-to-high temperature environments such as small motors and transformers. - Smooth, Glossy Finish
Uniform coating thickness ensures good winding performance and reduces risk of short circuits.
🔹 Technical Specifications
| Parameter | Specification |
|---|---|
| Wire Type | QA-1-155 / 2UEW Polyurethane Enameled Copper Wire |
| Conductor Material | Pure Copper |
| Wire Diameter | 0.50 mm |
| Color | Red / True Copper |
| Thermal Class | 155°C |
| Insulation Type | Polyurethane (solderable enamel) |
| Length Options | 20m / 100m (custom available) |
| Standard Compliance | IEC 60317-8, JIS C3202, UL, ISO9001, RoHS |
| Solderability | Excellent, no enamel stripping required |
🔹 Typical Applications
- Motor Rewinding and Repair
- Transformer Coil Replacement
- Electronic Circuit Repair and Prototyping
- Headphones, Speakers, and Sensors
- Electromagnetic Induction Coils
- DIY Electrical and Hobby Projects
Because of its ease of soldering and stable insulation, this wire is especially popular for maintenance engineers, hobbyists, and small-scale motor workshops.
🔹 Why Choose QA-1-155 Polyurethane Enameled Wire?
Compared to other enameled wires like QZY-2-180 or EIW/AIW types, QA-1-155 offers a unique combination of:
- Direct solderability (no stripping needed)
- Good heat resistance (Class F 155°C)
- Softness and flexibility for hand-winding
- Bright surface for visual inspection
It’s the preferred wire for electronic repair, signal coils, and precision electromagnetic components where soldering convenience matters.
The 0.5mm Red / True Color QA-1-155 (2UEW) Polyurethane Enameled Copper Wire is the perfect choice for motor coil repair, small transformer winding, and electronic prototyping.
With excellent solderability, stable insulation, and pure copper conductivity, it ensures efficient, long-lasting, and easy-to-use wiring performance for professionals and DIY users alike.
