High-Efficiency Rectangular Air Coil Wireless Charger - China Suppliers & Factory for Compact Charging Solutions
Key Features
Made with high-purity copper wire and an open air-core structure, this Wireless Charger Coil offers ultra-low resistance, excellent thermal conductivity, and high energy transfer efficiency, reducing charging time and minimizing heat buildup in slim devices.
Factory-tuned to meet Qi wireless charging specifications, this Air Coil works seamlessly with most smartphones, earbuds, smartwatches, and other Qi-enabled devices, ensuring reliable compatibility across popular consumer electronics.
Precision-wound copper winding maximizes magnetic coupling between transmitter and receiver coils, delivering industry-leading efficiency to reduce power waste and keep charging temperatures low.
The slim, rectangular profile is specifically designed to fit compact, non-circular enclosures, making it perfect for slimline chargers, car charging docks, wearables, and embedded IoT devices.
Tightly controlled winding tolerances ensure uniform inductance and performance across every unit. Insulated wire construction protects against short circuits and environmental stress, ensuring long-term reliability in continuous use.
Comes with pre-tinned leads for simple soldering to charging circuit boards. Available in multiple sizes, inductance values, and winding counts to match your specific power and form factor requirements.
Specifications (Customizable)
| Parameter | Details |
|---|---|
| Product Type | Rectangular Wireless Charger Coil / Air Coil |
| Core Material | Pure Copper Wire, Air Core (No Ferrite) |
| Standard Compatibility | Qi Wireless Charging Standard (5W/10W/15W variants available) |
| Inductance Range | Customizable (typically 6.3µH to 20µH for Qi applications) |
| DC Resistance | Low-resistance winding for minimal power loss |
| Operating Temperature | -20°C to +85°C |
| Form Factor | Flat rectangular air coil (custom dimensions available) |
| Applications | Slim wireless charging pads, car wireless chargers, wearable device chargers, embedded IoT charging systems, custom consumer electronics |
Applications
This rectangular Wireless Charger Coil excels in applications where space and form factor are critical:
- Slimline smartphone wireless charging pads
- Automotive wireless charging stations with limited space
- Smart home wearables (earbuds, smartwatch chargers)
- Industrial and commercial embedded wireless charging systems
- Custom Qi-enabled products with non-circular enclosure designs
- IoT devices requiring compact, low-profile wireless charging integration
Why Choose Our Rectangular Air Coil Wireless Charger Coils?
For wireless charging solutions that demand both performance and compact design, this Air Coil offers unmatched value:
- Space-Saving Design: The rectangular form factor solves the challenge of fitting wireless charging coils into slim, non-circular enclosures, enabling modern, minimalist product designs.
- Superior Efficiency: Pure copper winding and optimized air-core structure deliver high power transfer efficiency, reducing charging time and heat generation in compact devices.
- Precision Manufacturing: Tight winding tolerances ensure consistent inductance and performance across every coil, eliminating variability in mass production.
- Flexible Customization: We offer custom sizes, inductance values, and power ratings to match your specific product design requirements, from small wearables to high-power charging stations.
- Expert Support: Our engineering team can assist with coil tuning, design optimization, and integration guidance to ensure your wireless charging product meets Qi standards.
Frequently Asked Questions (FAQ)
The rectangular air core design is optimized for space, allowing it to fit into slim and non-circular enclosures. Built with high-purity copper, it provides ultra-low resistance, high thermal conductivity, and efficient energy transfer to minimize heat buildup.
Yes, they are factory-tuned to Qi wireless charging specifications. They are fully compatible with Qi-enabled consumer electronics, including smartphones, smartwatches, and earbuds, and support 5W, 10W, and 15W power configurations.
Yes, we provide flexible customization. You can customize the dimensions, inductance values (typically ranging from 6.3µH to 20µH), and winding counts to perfectly align with your specific device requirements.
Precision-wound pure copper winding maximizes magnetic coupling between the transmitter and receiver coils. This ensures industry-leading power transfer efficiency, keeping charging speeds fast and operating temperatures low.
The coils come equipped with pre-tinned leads, which allow for quick and simple soldering directly to your wireless charging circuit boards, ensuring reliable connection and easy assembly.