Wireless charging coil

Short Description:

According to the needs of the circuit, select the winding method:

When winding the wireless charging coil, it is necessary to determine the winding method according to the requirements of the wireless charging device circuit, the size of the coil inductance and the size of the coil, and then make a good mold. Wireless charging coils are basically wound from the inside to the outside, so first determine the size of the inner diameter. Then determine the number of layers, height, and outer diameter of the coil according to factors such as inductance and resistance.

Product Detail

Product Tags

The wireless charging coil is suitable for short-wave and medium-wave circuits, and its Q value can reach 150-250, and it has high stability.

After the wireless charging coil is energized, a magnetic field is formed around it, and it is turned into a spiral shape. The more the number of turns, the larger the magnetic field range. The more electricity passed per unit time, the stronger the magnetic field. According to the skin effect of the current, Replace the wire with more thin wires to get a stronger magnetic field. To improve space utilization, the wire used in the coil is usually insulated enameled wire.

When using automatic equipment to wind the wire, the wiring is very important. For a single wire, the number of turns and the number of layers of the coil need to be considered. The arrangement of the coils depends on whether the coils need to save space or improve heat dissipation, and it is often irreconcilable between several requirements.

When we wind the wireless charging coil, we should pay attention to the things mentioned above.


1. Space-saving design

2. Double-sided adhesive tape at the bottom for attachment

3.Applicable for Qi (5 W & 15 W), NFC and proprietary solutions with high power levels, where data transfer is needed

4.High permeability ferrite shielding focuses magnetic flux and protects sensitive electronics

5. Litz wire and high quality ferrite for high Q and maximum power transfer efficiency

6. Bulid to confirm ROHS compliant

7.Short lead time and quick sample

8. Could help customers to design the product according to the request.

Size and dimensions:

Size and dimensions

Electrical properties:


Specification Tolerance

Test Condition

Measuring Instrument

Inductance L





0.06Ω MAX







1.Applications where wireless power transfer

2.Wireless charging of sensors, smartphones, wearables, handhelds, cameras, smart watches, tablets, etc.

3.Wireless power charging and payment services in one component

4.Peer-to-peer communication and wireless power charging of mobile devices

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