WE-FLEX+ Flexible Transformer for DC/DC Converter | Passive Components | Würth Elektronik Product Catalog

OverviewAll product units Product unitPassive Components Product groupPower Magnetics Product familyTransformers For DC/DC Converter Product seriesWE-FLEX+ Flexible Transformer for DC/DC Converter

WE-FLEX+ Flexible Transformer for DC/DC Converter

Size	Dimensions	3D	L (mm)	W (mm)	H (mm)
ETD29			37.21	35.56	31.75
ETD34			40.39	39.62	31.49
ETD39			45.72	44.45	37.78

LTSpice files

LT
LTSpice_WE-FLEX-Plus (rev23a).zip
|
336.9 KB

Characteristics

Transformer with 6 identical windings
Power up to 300 W possible
Isolation voltage 500 VDC
Low leakage inductance
Operating temperature: –40 °C to +125 °C

Applications

All kind of switching regulators
- Flyback converters
- Forward converters
- Push-pull converters
- Step-up/step-down converters
- SEPIC converter

Products

All

ETD29

ETD34

ETD39

Order Code	Datasheet	Downloads	Status	L_BASE (µH)	I_{R BASE} (A)	I_{SAT BASE} (A)	n	V_T (V (AC))	R_{DC BASE} (mΩ)	L_{S Base} (µH)	Size	Type	Samples
749197141	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD29 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD29 (rev1).stp \| 986.8 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	15	2.2	3.1	1 : 1 : 1 : 1 : 1 : 1	500	45	0.32	ETD29	gapped
749197241	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD34 (rev1).igs \| 2.7 MB STP WE-FLEX_Plus_ETD34 (rev1).stp \| 979.4 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	22	2.5	2.91	1 : 1 : 1 : 1 : 1 : 1	500	51	0.32	ETD34	gapped
749197341	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD39 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD39 (rev1).stp \| 920.3 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	23.7	3.2	3.25	1 : 1 : 1 : 1 : 1 : 1	500	34	0.35	ETD39	gapped
749197131	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD29 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD29 (rev1).stp \| 986.8 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	24.3	2.2	1.83	1 : 1 : 1 : 1 : 1 : 1	500	45	0.32	ETD29	gapped
749197231	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD34 (rev1).igs \| 2.7 MB STP WE-FLEX_Plus_ETD34 (rev1).stp \| 979.4 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	36.1	2.5	1.58	1 : 1 : 1 : 1 : 1 : 1	500	51	0.32	ETD34	gapped
749197331	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD39 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD39 (rev1).stp \| 920.3 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	39.4	3.2	1.65	1 : 1 : 1 : 1 : 1 : 1	500	34	0.35	ETD39	gapped
749197121	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD29 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD29 (rev1).stp \| 986.8 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	46.3	2.2	0.83	1 : 1 : 1 : 1 : 1 : 1	500	45	0.32	ETD29	gapped
749197221	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD34 (rev1).igs \| 2.7 MB STP WE-FLEX_Plus_ETD34 (rev1).stp \| 979.4 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	69.4	2.5	0.67	1 : 1 : 1 : 1 : 1 : 1	500	51	0.32	ETD34	gapped
749197111	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD29 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD29 (rev1).stp \| 986.8 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	75.1	2.2	0.4	1 : 1 : 1 : 1 : 1 : 1	500	45	0.32	ETD29	gapped
749197321	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD39 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD39 (rev1).stp \| 920.3 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	77.3	3.2	0.68	1 : 1 : 1 : 1 : 1 : 1	500	34	0.35	ETD39	gapped
749197211	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD34 (rev1).igs \| 2.7 MB STP WE-FLEX_Plus_ETD34 (rev1).stp \| 979.4 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	113.8	2.5	0.33	1 : 1 : 1 : 1 : 1 : 1	500	51	0.32	ETD34	gapped
749197311	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD39 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD39 (rev1).stp \| 920.3 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	128.5	3.2	0.32	1 : 1 : 1 : 1 : 1 : 1	500	34	0.35	ETD39	gapped
749197101	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD29 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD29 (rev1).stp \| 986.8 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	195	2.2	0.25	1 : 1 : 1 : 1 : 1 : 1	500	45	0.32	ETD29	ungapped
749197201	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD34 (rev1).igs \| 2.7 MB STP WE-FLEX_Plus_ETD34 (rev1).stp \| 979.4 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	280	2.5	0.22	1 : 1 : 1 : 1 : 1 : 1	500	51	0.32	ETD34	ungapped
749197301	SPEC	8 files EDA models: Components ZIP ALT Altium_WE-FLEX PLUS (rev23a).IntLib \| 445 KB CDS Cadence_WE-FLEX_Plus (rev18a).zip \| 2.6 MB EAG Eagle_WE-FLEX-Plus (rev19a).lbr \| 36 KB KIC KiCad_WE-FLEX+ (rev25a).zip \| 522.4 KB ZUK Cadstar_WE-FLEX-Plus (rev20a).zip \| 10.5 KB CAD files ZIP IGS WE-FLEX_Plus_ETD39 (rev1).igs \| 2.9 MB STP WE-FLEX_Plus_ETD39 (rev1).stp \| 920.3 KB Electric models ZIP LT LTSpice_WE-FLEX-Plus (rev23a).zip \| 336.9 KB Download all 8 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	326.7	3.2	0.2	1 : 1 : 1 : 1 : 1 : 1	500	34	0.35	ETD39	ungapped

Order Code	Datasheet
749197141	SPEC
749197241	SPEC
749197341	SPEC
749197131	SPEC
749197231	SPEC
749197331	SPEC
749197121	SPEC
749197221	SPEC
749197111	SPEC
749197321	SPEC
749197211	SPEC
749197311	SPEC
749197101	SPEC
749197201	SPEC
749197301	SPEC

Samples

Order Code	Datasheet	Downloads	Status	L_BASE (µH)	I_{R BASE} (A)	I_{SAT BASE} (A)	n	V_T (V (AC))	R_{DC BASE} (mΩ)	L_{S Base} (µH)	Size	Type	Samples

Learn more

Online Evaluations