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Wireless charging coils using magnetic induction technology lead supply
Global SourcesUpdated on 2023/12/01
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Charging over longer distances spurs China wireless charging coil makers to consider magnetic resonance in future releases.
Magnetic induction remains the technology adopted by China makers of wireless charging coils, although they are looking to adopt magnetic resonance to enable longer-range transfer of power. Also on their agenda is the use of soft magnetic nanomaterials, currently in iPhones, to achieve a high Q value.
At present, the mainstream local selection has types based on the Qi and PMA standards. In round and rectangular forms, units come in single and multicoil variants with 5 to 15W rated power and about 80 percent efficiency. These are mainly for smartphones.
To match diverse requirements, makers continue to emphasize customization. More than half of their shipments are based such orders.
Wireless charging coils are expected to still account for the bulk of the local wireless charging sector's total outbound volume, with annual growth forecast to be sustained at between 5 and 10 percent in the next one or two years.
The key components and materials used in the manufacture of wireless charging coils include copper wires and magnetic parts. All are sourced from local or overseas providers as required.
Input costs are seen to remain stable and keep prices from fluctuating in the year ahead. Some companies, however, might lower their quotes again to attract more orders.
The products in this gallery have been handpicked by our market analyst for representing current trends in wireless charging coils from China makers.
Meets CE, FCC, RoHS
The model Shirui-WM-1811 wireless charging coil from Anhui Shirui Electronic Technology Co. Ltd adopts copper foil. It complies with CE, FCC and RoHS requirements.
The 1,000-unit minimum order has a delivery lead time of 7 days.
Integrates 3 coils
This wireless charging coil from Anhui Shirui Electronic Technology Co. Ltd, Shirui-WM-1815 model, has three coils with copper foil. It bears CE, FCC and RoHS certification.
The supplier requires a minimum order of 1,000 units. Delivery takes 7 days.
5V, 1A or 9V, 1.1A output
Shenzhen Aodehong Electronic Technology Co. Ltd markets the model MM-BLD-03 wireless charging coil with 5V, 2A or 9V, 1.67A input and 5V, 1A or 9V, 1.1A output. The 50x50mm unit has 85 percent conversion efficiency and 5 to 8mm transmission distance. It is compliant with WPC 1.2.4.
The minimum order is 1,000 units. Delivery lead time is 7 days.
5 to 8mm transmission distance
From Shenzhen Aodehong Electronic Technology Co. Ltd, the model HW-3TX9V-IP6505-V1.0 wireless charging coil has 78 percent conversion efficiency and 5 to 8mm transmission distance. The WPC 1.2.4-compliant unit with 12V, 1.3A input and 1 or 1.1A at 5 or 9V output measures 50x50mm.
An order of at least 1,000 units is required. The delivery lead time is 7 days.
7 to 15µH inductance, 70 to 80Mohm DC resistance
For smartphones, the model QXL-026 wireless charging coil from Shenzhen Qinxinlong Electronic Co. Ltd has 7 to 15µH inductance and 70 to 80Mohm DC resistance. It adopts a 0.02 to 4mm self-adhesive wire and measures 44x52x1.2mm.
The 5,000-unit minimum order is delivered within 7 days.
0.02 to 4mm self-adhesive wire
Shenzhen Qinxinlong Electronic Co. Ltd's model QXL-7981 wireless charging coil utilizes 0.02 to 4mm self-adhesive wire. Suitable for smartphones, the 44x52x1.2mm unit has 7 to 15µH inductance and 70 to 80Mohm DC resistance.
The required minimum order is 5,000 units. Delivery is within 7 days.
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