What are Wireless Charging Coils ?
Wireless Charging Coils are specialized inductive components designed to enable wireless energy transfer between devices. They are widely used in applications such as consumer electronics, automotive charging systems, and medical devices. Important specifications for selection include Current Rating (Amps), which determines the maximum load the coil can handle; DC Resistance (DCR), which affects efficiency and heat generation; and Inductance, which influences the coil's ability to store energy. Ensuring compatibility with existing designs and validating lifecycle status are crucial for procurement teams.
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| Part & Mfr | Current | Current Rating (Amps) | DC Resistance (DCR) | Frequency | Function | Inductance | Operating Temperature | Q @ Freq | Size | Tolerance | Type | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDK Corporation
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- | - | 200mOhm | - | Receiver | 13µH | - | - | 1.89" L x 1.27" W x 0.03" H (48.2mm x 32.2mm x 1.0mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 200mOhm | - | Receiver | 13.3µH | - | - | 1.89" L x 1.27" W x 0.04" H (48.2mm x 32.2mm x 1.2mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 60mOhm | - | Transmitter | 6.3µH | - | - | 2.02" Dia x 0.13" H (51.4mm x 3.4mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 90mOhm | - | Transmitter | 6.3µH | - | - | 1.18" Dia x 0.08" H (30.0mm x 2.0mm) | ±5% | 1 Coil, 2 Layer | |
TDK Corporation
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- | - | 1Ohm | - | Receiver | 16.6µH | - | - | 0.43" Dia x 0.06" H (11.0mm x 1.5mm) | - | 1 Coil, 2 Layer | |
Würth Elektronik
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4A | 1A | 430mOhm | 11MHz | Receiver | 16.7µH | -20°C ~ 105°C | 32 @ 125kHz | 1.52" L x 1.20" W x 0.03" H (38.5mm x 30.5mm x 0.83mm) | ±10% | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 60mOhm | - | Transmitter | 6.3µH | - | - | 1.97" Dia x 0.15" H (50.0mm x 3.8mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 165mOhm | - | Transmitter | 12.9µH | - | - | 0.97" Dia x 0.09" H (24.5mm x 2.4mm) | ±10% | 1 Coil, 2 Layer | |
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Adafruit Industries LLC
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- | 600mA | - | - | Receiver | - | - | - | - | - | - | |
TDK Corporation
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- | - | 100mOhm | - | Receiver | 15.8µH | - | 98 @ 100kHz | 2.13" L x 2.13" W x 0.09" H (54.0mm x 54.0mm x 2.4mm) | - | 1 Coil, 2 Layer | |
Würth Elektronik
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1.5A | 700mA | 750mOhm Max | 22MHz | Receiver | 11.8µH | -20°C ~ 105°C | 13 @ 125kHz | 0.59" Dia x 0.02" H (15.0mm x 0.6mm) | ±10% | 1 Coil, 1 Layer | |
Würth Elektronik
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2A | 1.1A | 520mOhm Max | 11MHz | Receiver | 26µH | -20°C ~ 105°C | 25 @ 125kHz | 0.75" Dia x 0.03" H (19.0mm x 0.8mm) | ±10% | 1 Coil, 3 Layer | |
Würth Elektronik
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2.5A | 1.1A | 340mOhm Max | 19MHz | Receiver | 12.6µH | -20°C ~ 105°C | 20 @ 125kHz | 0.67" Dia x 0.03" H (17.0mm x 0.8mm) | ±10% | 1 Coil, 3 Layer, Bifilar | |
Würth Elektronik
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2A | 700mA | 650mOhm Max | 24MHz | Receiver | 18µH | -20°C ~ 105°C | 18 @ 125kHz | 0.39" Dia x 0.07" H (10.0mm x 1.7mm) | ±10% | 1 Coil, 3 Layer | |
Würth Elektronik
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1A | 400mA | 1.4Ohm Max | 14.5MHz | Receiver | 24.2µH | -20°C ~ 105°C | 13 @ 125kHz | 0.41" Dia x 0.07" H (10.3mm x 1.9mm) | ±10% | 1 Coil, 6 Layer | |
Würth Elektronik
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1A | 500mA | 440mOhm Max | 32MHz | Receiver | 7.2µH | -20°C ~ 105°C | 10 @ 125kHz | 0.24" Dia x 0.08" H (6.0mm x 2.0mm) | ±10% | 1 Coil, 6 Layer | |
Würth Elektronik
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8A | 3.5A | 200mOhm Max | 15MHz | Receiver | 10µH | -20°C ~ 105°C | 50 @ 125kHz | 1.46" L x 1.46" W x 0.07" H (37.0mm x 37.0mm x 1.8mm) | ±5% | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 100mOhm | - | Transmitter | 24µH | - | - | 1.97" Dia x 0.15" H (50.0mm x 3.8mm) | - | 1 Coil, 2 Layer | |
Würth Elektronik
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2A | 0.8A | 400mOhm | 26MHz | Receiver | 13µH | -20°C ~ 105°C | 17 @ 125kHz | 0.39" Dia x 0.07" H (10.0mm x 1.7mm) | ±10% | 1 Coil, 3 Layer | |
Würth Elektronik
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3A | 1.5A | 460mOhm | 8MHz | Receiver | 47µH | -20°C ~ 105°C | 25 @ 125kHz | 1.02" L x 1.02" W x 0.05" H (26.0mm x 26.0mm x 1.3mm) | ±10% | 1 Coil, 3 Layer, Bifilar | |
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Adafruit Industries LLC
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- | - | - | - | Receiver | - | - | - | 3.94" L x 1.50" W x 0.059" H (100.0mm x 38.0mm x 1.5mm) | - | - | |
Würth Elektronik
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6A | 2.5A | 125mOhm Max | 20MHz | Transmitter | 6.8µH | -20°C ~ 105°C | 42 @ 125kHz | 0.81" Dia x 0.10" H (20.5mm x 2.6mm) | ±10% | 1 Coil, 2 Layer | |
Würth Elektronik
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10A | 6A | 70mOhm | 5MHz | Transmitter | 24µH | -20°C ~ 105°C | 180 @ 125kHz | 1.97" Dia x 0.24" H (50.0mm x 6.0mm) | ±10% | 1 Coil, 2 Layer | |
Würth Elektronik
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10A | 6A | 100mOhm Max | 5MHz | Transmitter | 24µH | -20°C ~ 105°C | 180 @ 125kHz | 2.10" L x 2.10" W x 0.24" H (53.3mm x 53.3mm x 6.0mm) | ±10% | 1 Coil, 2 Layer | |
TDK Corporation
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- | 1.25A | - | - | Receiver | - | -30°C ~ 70°C | - | 3.02" L x 1.29" W x 0.07" H (76.7mm x 32.7mm x 1.8mm) | - | 1 Coil, 1 Layer, Bifilar | |
TDK Corporation
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- | - | 149mOhm Max | - | Transmitter | 10.6µH | -40°C ~ 85°C | - | 3.35" L x 2.64" W x 0.03" H (85.1mm x 67.0mm x 0.8mm) | ±0.5µH | 1 Coil, 2 Layer | |
TDK Corporation
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- | - | - | - | Transmitter | - | - | - | 3.43" L x 2.05" W x 0.197" H (87.0mm x 52.0mm x 5.0mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 350mOhm | - | Receiver | 10.68µH | - | - | 0.79" Dia x 0.03" H (20.0mm x 0.8mm) | ±5% | 1 Coil, 2 Layer | |
TDK Corporation
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- | - | 310mOhm | - | Receiver | 13.9µH | - | 28 @ 100kHz | 1.51" L x 1.27" W x 0.03" H (38.4mm x 32.3mm x 0.9mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 60mOhm | - | Transmitter | 6.3µH | - | - | 2.02" Dia x 0.13" H (51.4mm x 3.4mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 700mOhm | - | Receiver | 19µH | - | - | 1.71" L x 1.56" W x 0.02" H (43.5mm x 39.5mm x 0.6mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 110mOhm | - | Transmitter | 7.4µH | - | - | 1.12" Dia x 0.10" H (28.4mm x 2.4mm) | - | 1 Coil, 2 Layer | |
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Signal Transformer
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10A | 6A | 40mOhm Max | - | Transmitter | 6.3µH | -20°C ~ 85°C | - | 1.97" Dia x 0.12" H (50.0mm x 3.0mm) | ±10% | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 30mOhm | - | Transmitter | 4.95µH | - | 97 @ 100kHz | - | - | 1 Coil, 1 Layer | |
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Signal Transformer
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10A | 6A | 40mOhm Max | - | Transmitter | 6.3µH | -20°C ~ 85°C | - | 1.97" Dia x 0.14" H (50.0mm x 3.5mm) | ±10% | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 650mOhm | - | Receiver | 16.7µH | - | - | 1.71" L x 1.56" W x 0.02" H (43.5mm x 39.5mm x 0.5mm) | - | 1 Coil, 1 Layer | |
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TDK Corporation
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- | - | - | - | - | - | - | - | - | - | - | |
TDK Corporation
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- | - | 50mOhm | - | Transmitter | 7.5µH, 8.5µH | - | - | 4.01" L x 2.26" W x 0.18" H (101.8mm x 57.3mm x 4.7mm) | - | 3 Coil, 1 Layer | |
TDK Corporation
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- | - | 270mOhm | - | Receiver | 10.1µH | - | - | 1.90" L x 1.27" W x 0.05" H (48.2mm x 32.2mm x 1.3mm) | - | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 60mOhm | - | Transmitter | 8.9µH | - | 104 @ 100kHz | 2.13" L x 2.13" W x 0.13" H (54.0mm x 54.0mm x 3.3mm) | - | 1 Coil, 2 Layer | |
Signal Transformer
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10A | 6A | 85mOhm Max | - | Transmitter | 24µH | -20°C ~ 85°C | - | 1.97" Dia x 0.16" H (50.0mm x 4.0mm) | ±10% | 1 Coil, 2 Layer | |
TDK Corporation
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- | - | 80mOhm | - | Transmitter | 11.5 ~ 12.5µH | - | - | 3.94" L x 2.20" W x 0.19" H (100.0mm x 56mm x 4.8mm) | - | 3 Coil, 1 Layer | |
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Vishay
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- | 10A | 25mOhm Max | - | Transmitter | 6.3µH | -40°C ~ 85°C | 90 @ 100kHz | 1.97" Dia x 0.16" H (50.0mm x 4.0mm) | ±10% | 1 Coil, 1 Layer | |
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Vishay
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- | 10A | 25mOhm Max | - | Transmitter | 6.3µH | -40°C ~ 85°C | 90 @ 100kHz | 1.97" Dia x 0.16" H (50.0mm x 4.0mm) | ±10% | 1 Coil, 1 Layer | |
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Vishay
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- | - | 185mOhm | - | Receiver | 10.65µH | -40°C ~ 105°C | 30 @ 200kHz | 1.50" L x 1.05" W x 0.07" H (38.1mm x 26.7mm x 1.7mm) | ±5% | 1 Coil, 1 Layer | |
TDK Corporation
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- | - | 300mOhm | - | Transmitter | 20.9µH | - | - | 0.79" Dia x 0.11" H (20.0mm x 2.7mm) | - | 1 Coil, 4 Layer | |
Würth Elektronik
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3A | 1.5A | 450mOhm | 18.5MHz | Receiver | 10.5µH | -20°C ~ 105°C | 19 @ 125kHz | 1.035" Dia x 0.019" H (26.30mm x 0.49mm) | ±10% | 1 Coil, 1 Layer | |
Molex
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- | - | 245mOhm | - | Receiver | 2.6µH | - | 90 @ 6.78MHz | 1.04" Dia x 0.02" H (26.5mm x 0.5mm) | ±2% | 1 Coil, 1 Layer | |
Laird Technologies
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- | - | 50mOhm Max | - | Transmitter | 6.5µH | -40°C ~ 125°C | 70 @ 100kHz | 1.97" Dia x 0.12" H (50.0mm x 3.0mm) | ±10% | 1 Coil, 1 Layer | |
Laird Technologies
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- | - | 65mOhm Max | - | Transmitter | 12.5µH | -40°C ~ 125°C | 90 @ 100kHz | 2.173" L x 1.858" W x 0.118" H (55.20mm x 47.20mm x 3.00mm) | ±10% | 1 Coil, 1 Layer |
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