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Medium Large Air Core Induction Coil Suppliers in China - Custom Enameled Copper Winding for Tablet Wireless Charging Factory
Product Overview
This medium-large flat rounded square coil adopts multi-turn dense self-bond enameled copper winding, air-core self-support forming without magnetic core. Larger square frame expands effective sensing coverage, ultra-thin flat body fits tablet and flat card reader housing, ultra-fine leads support quick PCB welding.
Core Advantages
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Enlarged rounded square outline: Maximize signal coverage for long-distance NFC identification and stable tablet wireless charging.
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Ultra-thin flat winding: Save vertical assembly space for slim flat electronic equipment.
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Air-core design: Eliminate magnetic saturation and hysteresis loss, consistent inductance under variable working distance.
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High-purity copper wire: Low internal impedance, reduce heat loss and improve wireless energy transfer efficiency.
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Fully customizable: Side length, inner hollow size, winding turns, wire thickness and lead stripping length adjustable.
Frequently Asked Questions
Q1: What are the primary applications for this square coil?
It is specifically designed for NFC identification, tablet wireless charging, and flat card reader housing where a slim profile is required.
Q2: Can the dimensions be customized for specific device housings?
Yes, we offer full customization for side length, inner hollow size, and winding turns to ensure a perfect fit for your equipment.
Q3: Why is the air-core design beneficial for wireless charging?
The air-core design eliminates magnetic saturation and hysteresis loss, providing consistent inductance performance regardless of the working distance.
Q4: How does the high-purity copper wire affect performance?
High-purity copper ensures low internal impedance, which significantly reduces heat loss and maximizes the efficiency of energy transfer.
Q5: Is the coil easy to integrate onto a PCB?
Yes, the coil features ultra-fine leads that are designed to support quick and reliable PCB welding for streamlined manufacturing.
Q6: What makes this coil "ultra-thin"?
By using dense self-bond enameled copper winding and a flat architecture, we minimize the vertical height for slim electronic devices.