Air core Coil
Flat Rounded Square Air Core Induction Coil, Self Bond Enameled Copper Winding, Stable Inductance, For Smart Watch Wireless Charging & Medium Size NFC Tag Sensing Module.
Product Overview
This flat rounded square coil is wound with self-bond enameled copper wire without magnetic core. Moderate square frame balances space utilization and sensing range, ultra-thin flat thickness fits smart wearable back housing, ultra-fine extended leads support convenient PCB soldering.
Core Advantages
- Rounded square outline: Perfect match for square wearable equipment layout, uniform magnetic field distribution
- Ultra-thin flat winding: Save vertical assembly space for slim smart watches, wireless earphone charging cases
- Air-core design: No magnetic saturation & hysteresis loss, consistent inductance under variable current loads
- High-conductivity copper wire: Low DC resistance, improve wireless charging efficiency and reduce heat
- Fully customizable: Outer side length, inner hollow size, winding turns, wire gauge and lead length adjustable