SMD High-Current Coupled Inductors WE-CFWI

Wurth Electronics' WE-CFWI is equipped with two identical flat wire windings for high-current capabilities and ultra-low DCR, providing the best possible efficiency

Image of Wurth's WE-CFWI Coupled Flat Wire InductorsWurth Electronics' WE-CFWI series are coupled flat wire inductors for high-performance switching regulators. The windings in the WE-CFWI series can be connected in series and in parallel. This means the compact, double choke can be used in SEPIC, CUK, or buck/boost converters. The special core material enables high saturation currents of up to 62 A, which is four times higher than previously comparable double chokes. These components also feature a soft saturation current, a very tight tolerance inductance and very low DC resistance with only 10% tolerance, and has a leakage inductance of less than 0.5%, which reduces peaks in start-up currents. The excellent inductance stability over temperature and low DC resistance makes this component particularly suitable for high-performance switching regulators.

Wurth Electronics has extended the WE-CFWI series with two package sizes (1312 and 1813) with up to 100% higher inductance (values up to 10 µH) than the 1310 package size. With a 70% lower RDC, the WE-CFWI components can be operated with four times the rated current and 60% higher saturation current than the WE-DD series.

Features Applications
  • Very low RDC
  • Low inductance driver over temperature
  • Operating temperature: -40°C up to +150°C
  • Coupled inductor with two identical windings
  • More variants due to parallel and series connection
  • High power switching regulators
  • 1:1 flyback converter
  • Buck, boost, SEPIC, and CUK converter
  • Switching regulators with secondary unregulated output voltages
  • Battery cell charging balancer

SMD High-Current Coupled Inductors WE-CFWI

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
74485540350 datasheet linkINDUCT ARRAY 2 COIL 3.5UH SMD74485540350INDUCT ARRAY 2 COIL 3.5UH SMD504 - Immediate
74485540350 product page link
74485540820 datasheet linkFIXED IND 8.2UH 13.5A 13 MOHM74485540820FIXED IND 8.2UH 13.5A 13 MOHM186 - Immediate
74485540820 product page link
74485540680 datasheet linkFIXED IND 6.8UH 14A 11.3 MOHM74485540680FIXED IND 6.8UH 14A 11.3 MOHM184 - Immediate
74485540680 product page link
74485540101 datasheet linkFIXED IND 10UH 13A 13.9 MOHM SMD74485540101FIXED IND 10UH 13A 13.9 MOHM SMD122 - Immediate
74485540101 product page link
74485540440 datasheet linkINDUCT ARRAY 2 COIL 4.4UH SMD74485540440INDUCT ARRAY 2 COIL 4.4UH SMD234 - Immediate
74485540440 product page link
74485542680 datasheet linkFIXED IND 6.8UH 20A 6.1 MOHM SMD74485542680FIXED IND 6.8UH 20A 6.1 MOHM SMD149 - Immediate
74485542680 product page link
74485542101 datasheet linkFIXED IND 10UH 15A 11 MOHM SMD74485542101FIXED IND 10UH 15A 11 MOHM SMD129 - Immediate
74485542101 product page link
74485542820 datasheet linkFIXED IND 8.2UH 19A 8.4 MOHM SMD74485542820FIXED IND 8.2UH 19A 8.4 MOHM SMD126 - Immediate
74485542820 product page link
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Published: 2013-09-17