Wireless Charging Coils

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Function	Type	Inductance	Tolerance	DC Resistance (DCR)	Q @ Freq	Current Rating (Amps)	Current - Saturation (Isat)	Frequency - Self Resonant	Operating Temperature	Size / Dimension

WR222230-26M8-G RX 1 COIL 2 LYR 27UH TDK Corporation	6,004 In Stock	1 : $3.30000 Tray	WR	Tray	Active	Receiver	1 Coil, 2 Layer	27µH	-	1.1Ohm Max	-	-	-	-	-	0.87" Dia x 0.03" H (22.0mm x 0.9mm)
760308101214 RX 1 COIL 3 LAYER 26UH 1.1A Würth Elektronik	584 In Stock	1 : $7.98000 Tray	WE-WPCC	Tray	Active	Receiver	1 Coil, 3 Layer	26µH	±10%	520mOhm Max	25 @ 125kHz	1.1A	2A	11MHz	-20°C ~ 105°C	0.75" Dia x 0.03" H (19.0mm x 0.8mm)
WR202020-18M8-G RX 1 COIL, 1 LYR 9.9UH TDK Corporation	678 In Stock	1 : $4.33000 Tray	WR	Tray	Active	Receiver	1 Coil, 1 Layer	9.9µH	-	520mOhm	-	-	-	-	-	0.79" Dia x 0.02" H (20.0mm x 0.6mm)
WR151580-48F2-G RX 1 COIL 4 LYR 27.1UH TDK Corporation	4,252 In Stock	1 : $4.39000 Tray	WR	Tray	Active	Receiver	1 Coil, 4 Layer	27.1µH	-	500mOhm	-	-	-	-	-	0.59" Dia x 0.10" H (15.0mm x 2.6mm)
WT151512-22F2-ID TX 1 COIL 2 LYR 6.8UH TDK Corporation	2,983 In Stock	1 : $4.48000 Box	WT	Box	Active	Transmitter	1 Coil, 2 Layer	6.8µH	±5%	170mOhm	-	-	-	-	-	0.60" Dia x 0.09" H (15.3mm x 2.2mm)
WT202012-15F2-ID TX 1 COIL 2 LYR 6.2UH TDK Corporation	15,594 In Stock	1 : $4.61000 Tray	WT	Tray	Active	Transmitter	1 Coil, 2 Layer	6.2µH	±5%	80mOhm	-	-	-	-	-	0.80" Dia x 0.10" H (20.3mm x 2.7mm)
WR303050-12F5-ID RX 1 COIL 1 LYR 8.23UH TDK Corporation	2,662 In Stock	1 : $5.45000 Tray	WR	Tray	Active	Receiver	1 Coil, 1 Layer	8.23µH	±5%	260mOhm	-	-	-	-	-	1.18" L x 1.17" W x 0.03" H (30.0mm x 29.6mm x 0.9mm)
WT303012-12F2-ID TX 1 COIL 2 LYR 6.3UH TDK Corporation	5,281 In Stock	1 : $5.94000 Tray	WT	Tray	Active	Transmitter	1 Coil, 2 Layer	6.3µH	±5%	90mOhm	-	-	-	-	-	1.18" Dia x 0.08" H (30.0mm x 2.0mm)
760308101219 RX 1 COIL 1 LAYER 11.8UH 700MA Würth Elektronik	256 In Stock	1 : $7.92000 Box	WE-WPCC	Box	Active	Receiver	1 Coil, 1 Layer	11.8µH	±10%	750mOhm Max	13 @ 125kHz	700mA	1.5A	22MHz	-20°C ~ 105°C	0.59" Dia x 0.02" H (15.0mm x 0.6mm)
WR202010-18M8-SM RX 1 COIL 2 LYR 10.68UH TDK Corporation	450 In Stock	1 : $4.24000 Tray	WR	Tray	Active	Receiver	1 Coil, 2 Layer	10.68µH	±5%	350mOhm	-	-	-	-	-	0.79" Dia x 0.03" H (20.0mm x 0.8mm)
WR121210-27M8-ID RX 1 COIL 1 LYR 8.32UH TDK Corporation	644 In Stock	1 : $3.24000 Tray	WR	Tray	Active	Receiver	1 Coil, 1 Layer	8.32µH	±5%	950mOhm	-	-	-	-	-	0.47" Dia x 0.01" H (12.0mm x 0.3mm)
WT202080-28F2-G TX 1 COIL 4 LYR 20.9UH TDK Corporation	92 In Stock	1 : $5.21000 Tray	WT	Tray	Active	Transmitter	1 Coil, 4 Layer	20.9µH	-	300mOhm	-	-	-	-	-	0.79" Dia x 0.11" H (20.0mm x 2.7mm)
2114 UNIVERSAL QI WIRELESS CHARGING M Adafruit Industries LLC	11 In Stock	1 : $24.95000 Bulk	-	Bulk	Active	Receiver	-	-	-	-	-	600mA	-	-	-	-
WR303050-15F5-G RX 1 COIL 2 LYR 12.3UH TDK Corporation	0 In Stock Check Lead Time	1 : $5.04000 Tray	WR	Tray	Active	Receiver	1 Coil, 2 Layer	12.3µH	-	410mOhm	-	-	-	-	-	1.18" L x 1.16" W x 0.03" H (30.0mm x 29.6mm x 1.0mm)
WR282840-37K2-LR3 RX 1 COIL 1 LYR 46UH TDK Corporation	2 In Stock	1 : $20.71000 Tray	WR	Tray	Active	Receiver	1 Coil, 1 Layer	46µH	-	1.25Ohm	-	-	-	-	-	-
RCC-2020-RX-NL INDUCTOR RDI, Inc.	3,744 Marketplace	144 : $0.81000 Tray	-	Tray	Active	Receiver	1 Coil, 1 Layer	12µH	±10%	275mOhm	-	-	-	-	-25°C ~ 85°C	0.79" L x 0.79" W x 0.04" H (20.0mm x 20.0mm x 1.0mm)
L41200R02 48UH Q = 19 TYPICAL AT 125KHZ WI ITG Electronics, Inc.	260 Marketplace	20 : $8.50000 Tray	-	Tray	Active	Receiver	1 Coil, 1 Layer	48µH	-	-	19 @ 125kHz	-	-	-	-40°C ~ 105°C	1.20" L x 1.40" W x 0.08" H (30.5mm x 35.5mm x 2.0mm)
QPT-6071A Transmitter QST	1 Marketplace	1 : $28.57000 Box	-	Box	Active	Transmitter	1 Coil, 1 Layer	6.5µH	±10%	380mOhm Max	65 @ 100kHz	-	-	-	0°C ~ 40°C	1.97" Dia x 0.09" H (50.0mm x 2.3mm)

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Wireless charging coils generate an alternating electromagnetic field used to inductively transfer energy to other coils positioned parallel and in close proximity. The energy is used to charge batteries or run the device receiving the energy. The coils may be designed as receivers, transmitters or dual purpose having single or multiple coils and multiple layers of windings. They are rated by their inductance, self resonant frequency, saturation current and Q factor at a given frequency.