Air core Coil
Small Flat Rounded Square Air Core Coil, Dense Multi-Turn Self Bond Copper Winding, Compact Size For Mini Smart Watch Wireless Charging & Small NFC Tags.
Product Overview
This tiny flat rounded square coil is wound with dense multi-turn self-bond enameled copper wire without magnetic core. Mini square outline fits narrow inner space of smart watches and miniature wearable devices, ultra-thin flat design saves vertical installation height, fine thin leads support easy PCB welding.
Core Advantages
- Mini rounded square shape: Perfect match for compact smart watch housing layout, space-saving assembly
- Dense multi-turn flat winding: Achieve stable inductance within limited small area for reliable wireless charging
- Air-core structure: No magnetic saturation & hysteresis loss, consistent performance under variable charging distance
- High-conductivity copper wire: Low DC resistance, reduce heat generation during continuous charging
- Fully customizable: Side length, inner hollow aperture, winding turns, wire gauge and lead stripping length adjustable