WE-CFWI Coupled Flatwire Inductor

Size	L (mm)	W (mm)	H (mm)
1310	15.5	13.2	10.5
1312	15.5	13.2	12.5
1813	21	18.5	13.5

LTSpice files

LT
LTSpice_WE-CFWI (rev22a).zip
|
2.4 KB

Characteristics

Very low RDC
Saturation current higher than 50 A
Low inductance drift over temperature
Coupled inductor with two identical windings
More variants due to parallel and series connection possible

Applications

High power switching regulators
1:1 flyback converter
Buck, Boost, Sepic and Cuk Converter
Switching regulators with second unregulated output voltage
Battery Cell Charging Balancer

Application Notes

An Excellent Duet!

The WE-MCRI is an innovative molded coupled inductor with fully automated bifilar winding process. It offers an almost ideal coupling coefficient up to 0.995.

Product video and more

Products

All

1310

1312

1813

Order Code	Datasheet	Downloads	Status	L₁ (µH)	L₂ (µH)	n	I_R (A)	I_{R 2} (A)	I_SAT1 (A)	I_SAT2 (A)	R_{DC 1} (mΩ)	R_{DC 2} (mΩ)
74485540080	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	0.8	0.8	1:1	28	28	62	62	1.6	1.6
74485540120	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	1.2	1.2	1:1	23	23	47	47	2.4	2.4
74485540170	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	1.7	1.7	1:1	21	21	39	39	3.3	3.3
74485540220	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	2.2	2.2	1:1	18	18	35	35	4.2	4.2
74485540290	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	2.9	2.9	1:1	17	17	29	29	5.6	5.6
74485540350	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	3.5	3.5	1:1	14	14	27	27	7.5	7.5
74485540440	SPEC	6 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Download all 6 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	4.4	4.4	1:1	12	12	24	24	9.6	9.6
74485540680	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	6.8	6.8	1:1	14	14	16	16	11.3	11.3
74485540820	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	8.2	8.2	1:1	13.5	13.5	14	14	13	13
74485540101	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	10	10	1:1	13	13	13.5	13.5	13.9	13.9
74485542680	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	6.8	6.8	1:1	13.5	13.5	26	26	6.1	6.1
74485542820	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	8.2	8.2	1:1	13	13	24	24	8.4	8.4
74485542101	SPEC	7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 7 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	10	10	1:1	11.5	11.5	22	22	11	11

Order Code	Datasheet	Simulation
74485540080	SPEC
74485540120	SPEC
74485540170	SPEC
74485540220	SPEC
74485540290	SPEC
74485540350	SPEC
74485540440	SPEC
74485540680	SPEC
74485540820	SPEC
74485540101	SPEC
74485542680	SPEC
74485542820	SPEC
74485542101	SPEC

Samples

Order Code	Datasheet	Simulation	Downloads	Status	L₁ (µH)	L₂ (µH)	n	I_R (A)	I_{R 2} (A)	I_SAT1 (A)	I_SAT2 (A)	R_{DC 1} (mΩ)	R_{DC 2} (mΩ)	Samples

REDEXPERT loss simulation

Find the best inductor!

REDEXPERT has the world’s most accurate AC loss model, which even includes the DC-bias current. With dedicated DC-DC topologies or the generic loss simulator, you can accurately determine the AC and DC losses for your converter. The model includes the core material, shape and winding structure of the inductor. REDEXPERT recommends suitable inductors and allows you to add more filters to find the best inductor for your application.

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Videos

WE-MCRI – Innovative Molded Coupled Inductor by Würth Elektronik eiSos