Charging Coils | e絡盟 Hong Kong

Our range of wireless charging coils includes one coil, two coil and three coil devices, with inductance from 2.5µH to 47µH.Wireless charging coils are electronic components at the core of wireless charging technology; an approach which allows battery-operated mobile and portable devices to be recharged without need for cables or plugging in.Broadly, there are three types of wireless charging. There are charging pads that use tightly coupled electromagnetic inductive or non-radiative charging; charging bowls or through-surface type chargers that use loosely coupled or radiative electromagnetic resonant charging that can transmit a charge a few centimetres; and uncoupled radio frequency (RF) wireless charging that allows a trickle charging capability at distances of many feet.Both tightly coupled inductive and loosely coupled resonant charging operate on the same principle of physics: a time-varying magnetic field induces a current in a closed loop of wire.Qi wireless charging coils are important because they comply with the Qi charging standard. This is not the only wireless charging method available, but it's the first one that is supported by two of the largest and most-influential smartphone makers: Samsung and Apple.

Applications of wireless charging coils

Wireless charging is currently being used in many applications including:

Smartphones and wearable technology
Notebooks and tablets
Power tools and service robots, such as vacuum cleaners
Multicopters and electric toys
Medical devices
In-car charging

			Price For		Quantity

WR121210-27M8-ID	2790525 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 8.32 µH ± 5% 0.98 ohm 1 Coil 1 Layer	Each	1+ HK$21.540 50+ HK$15.460 100+ HK$14.870 250+ HK$14.270 500+ HK$13.680 More Pricing...	Min: 1 / Mult: 1	WR Series	8.32µH	± 5%	0.98ohm	1 Coil	1 Layer	-	-	0.34mm	Board Mount	-30°C	70°C
WT151512-22F2-ID	2790521 Data Sheet RoHS	TDK Charging Coil Transmitter WT Series 6.8 µH ± 5% 0.18 ohm 1 Coil 2 Layers	Each	1+ HK$25.400 10+ HK$20.970 50+ HK$19.400 200+ HK$18.930 400+ HK$18.460 More Pricing...	Min: 1 / Mult: 1	WT Series	6.8µH	± 5%	0.18ohm	1 Coil	2 Layers	-	-	2.42mm	Board Mount	-30°C	70°C
WT202012-15F2-ID	2790522 Data Sheet RoHS	TDK Charging Coil Transmitter WT Series 6.2 µH ± 5% 0.095 ohm 1 Coil 2 Layers	Each	1+ HK$23.190 10+ HK$19.080 50+ HK$18.940 100+ HK$18.790 200+ HK$18.650 More Pricing...	Min: 1 / Mult: 1	WT Series	6.2µH	± 5%	0.095ohm	1 Coil	2 Layers	-	-	2.84mm	Board Mount	-30°C	70°C
WT505090-20K2-A10-G	3650731 Data Sheet RoHS	TDK Charging Coil WT Series 24 µH 0.1 ohm 1 Coil 2 Layers	Each	1+ HK$57.300 5+ HK$51.840 10+ HK$46.370 25+ HK$46.200 50+ HK$46.020 More Pricing...	Min: 1 / Mult: 1	WT Series	24µH	-	0.1ohm	1 Coil	2 Layers	-	-	3.81mm	Board Mount	-30°C	70°C
WT303012-12F2-ID	2790523 Data Sheet RoHS	TDK Charging Coil Transmitter WT Series 6.3 µH ± 5% 0.115 ohm 1 Coil 2 Layers	Each	1+ HK$30.010 10+ HK$26.720 50+ HK$26.550 100+ HK$26.380 200+ HK$26.210 More Pricing...	Min: 1 / Mult: 1	WT Series	6.3µH	± 5%	0.115ohm	1 Coil	2 Layers	-	-	2.15mm	Board Mount	-30°C	70°C
WR301025-19M8-G	2790529 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 12.8 µH 1.27 ohm 1 Coil 2 Layers	Each	1+ HK$12.950 50+ HK$12.240 100+ HK$11.530 250+ HK$10.820 500+ HK$10.100 More Pricing...	Min: 1 / Mult: 1	WR Series	12.8µH	-	1.27ohm	1 Coil	2 Layers	10mm	30mm	0.52mm	Board Mount	-30°C	70°C
WR483245-15F5-G	2377528 Data Sheet RoHS	TDK Charging Coil Wireless WR Series 13 µH 0.2 ohm 1 Coil 1 Layer	Each	1+ HK$43.000 5+ HK$38.930 10+ HK$34.860 25+ HK$30.910 50+ HK$29.190 More Pricing...	Min: 1 / Mult: 1	WR Series	13µH	-	0.2ohm	1 Coil	1 Layer	32.5mm	48.5mm	1mm	Board Mount	-30°C	70°C
WR303050-12F5-ID	2790530 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 8.23 µH ± 5% 0.28 ohm 1 Coil 1 Layer	Each	1+ HK$36.620 10+ HK$33.080 25+ HK$29.550 50+ HK$26.000 100+ HK$22.460 More Pricing...	Min: 1 / Mult: 1	WR Series	8.23µH	± 5%	0.28ohm	1 Coil	1 Layer	30mm	30.4mm	0.94mm	Board Mount	-30°C	70°C
WR444030-16F3-G	2377530 Data Sheet RoHS	TDK Charging Coil Wireless WR Series 19 µH 0.7 ohm 1 Coil 1 Layer	Each	1+ HK$42.770 20+ HK$38.500 40+ HK$29.090 80+ HK$28.310	Min: 1 / Mult: 1	WR Series	19µH	-	0.7ohm	1 Coil	1 Layer	44mm	40mm	0.62mm	Board Mount	-30°C	70°C
WR202010-18M8-ID	2790526 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 11 µH ± 5% 0.4 ohm 1 Coil 2 Layers	Each	1+ HK$32.390 10+ HK$27.050 50+ HK$21.210 100+ HK$19.400 200+ HK$18.000 More Pricing...	Min: 1 / Mult: 1	WR Series	11µH	± 5%	0.4ohm	1 Coil	2 Layers	-	-	0.88mm	Board Mount	-30°C	70°C
WR444025-17M6-G	2790531 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 16.7 µH 0.65 ohm 1 Coil 1 Layer	Each	1+ HK$65.610 50+ HK$47.980 100+ HK$45.250 250+ HK$41.230 500+ HK$38.890 More Pricing...	Min: 1 / Mult: 1	WR Series	16.7µH	-	0.65ohm	1 Coil	1 Layer	44mm	40mm	0.52mm	Board Mount	-30°C	70°C
WR524825-17M6-NF-G	2790533 Data Sheet RoHS	TDK Charging Coil NFC Antenna Combo Rx WR-NFC Series 16.8 µH 0.75 ohm 1 Coil 1 Layer	Each	1+ HK$81.490 5+ HK$71.300 10+ HK$59.080 25+ HK$52.970 50+ HK$48.890 More Pricing...	Min: 1 / Mult: 1	WR-NFC Series	16.8µH	-	0.75ohm	1 Coil	1 Layer	52.5mm	48.5mm	0.52mm	Board Mount	-30°C	70°C
WR524830-16F3-NF-G	2790534 Data Sheet RoHS	TDK Charging Coil NFC Antenna Combo Rx WR-NFC Series 19.5 µH 0.8 ohm 1 Coil 1 Layer	Each	1+ HK$62.600 5+ HK$56.660 10+ HK$50.720 25+ HK$49.870	Min: 1 / Mult: 1	WR-NFC Series	19.5µH	-	0.8ohm	1 Coil	1 Layer	52.5mm	48.5mm	0.62mm	Board Mount	-30°C	70°C
WR483265-15F5-G	2377527 Data Sheet RoHS	TDK Charging Coil Receiving Wireless WR Series 13.3 µH 0.2 ohm 1 Coil 1 Layer	Each	1+ HK$39.380 5+ HK$35.270 10+ HK$31.160 25+ HK$29.270 50+ HK$27.620 More Pricing...	Min: 1 / Mult: 1	WR Series	13.3µH	-	0.2ohm	1 Coil	1 Layer	32.5mm	48.5mm	1.25mm	Board Mount	-30°C	70°C
WR222230-26M8-G	2790528 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 27 µH 1.1 ohm 1 Coil 2 Layers	Each	1+ HK$22.360 50+ HK$16.030 100+ HK$13.900 250+ HK$13.530 500+ HK$13.160 More Pricing...	Min: 1 / Mult: 1	WR Series	27µH	-	1.1ohm	1 Coil	2 Layers	-	-	0.87mm	Board Mount	-30°C	70°C
WTM905525-12F2-12V-G	3650732 Data Sheet RoHS	TDK Charging Coil WTM Series 10 µH 1 Coil 1 Layer	Each	1+ HK$558.380 5+ HK$478.670 10+ HK$431.640 20+ HK$409.830 40+ HK$394.950 More Pricing...	Min: 1 / Mult: 1	WTM Series	10µH	-	-	1 Coil	1 Layer	52mm	52mm	4.34mm	Board Mount	-30°C	70°C
WRM483265-10F5-12V-G	3650729 Data Sheet RoHS	TDK Charging Coil Receiver Bifilar WRM Series 8 µH 1 Coil 1 Layer	Each	1+ HK$209.440 5+ HK$179.540 10+ HK$161.900 25+ HK$153.720 50+ HK$148.140 More Pricing...	Min: 1 / Mult: 1	WRM Series	8µH	-	-	1 Coil	1 Layer	48.2mm	32.7mm	1.8mm	Board Mount	-30°C	70°C
WR221230-36M8-G	2790527 Data Sheet RoHS	TDK Charging Coil Receiver WR Series 27.9 µH ± 5% 1.21 ohm 1 Coil 2 Layers	Each	1+ HK$12.580 10+ HK$10.860 100+ HK$9.150 500+ HK$9.140 1000+ HK$9.130 More Pricing...	Min: 1 / Mult: 1	WR Series	27.9µH	± 5%	1.21ohm	1 Coil	2 Layers	22mm	12mm	0.87mm	Board Mount	-30°C	70°C

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