WE-FLEX+ Flexible Transformer for DC/DC Converter
SizeDimen­sions3DL
(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

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

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Products

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ETD29
ETD34
ETD39
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Data­sheet
Downloads
Status
LBASE(µH)
IR BASE(A)
ISAT BASE(A)
n
VT(V (AC))
RDC BASE(mΩ)
LS Base(µH)
Size
Type
Samples
749197141
15 µH, 2.2 A, 3.1 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base15 µH
Rated Current Base2.2 A
Saturation Current Base3.1 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base45 mΩ
Leakage Inductance Base0.32 µH
SizeETD29 
Typegapped 
749197241
22 µH, 2.5 A, 2.91 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base22 µH
Rated Current Base2.5 A
Saturation Current Base2.91 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base51 mΩ
Leakage Inductance Base0.32 µH
SizeETD34 
Typegapped 
749197341
23.7 µH, 3.2 A, 3.25 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base23.7 µH
Rated Current Base3.2 A
Saturation Current Base3.25 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base34 mΩ
Leakage Inductance Base0.35 µH
SizeETD39 
Typegapped 
749197131
24.3 µH, 2.2 A, 1.83 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base24.3 µH
Rated Current Base2.2 A
Saturation Current Base1.83 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base45 mΩ
Leakage Inductance Base0.32 µH
SizeETD29 
Typegapped 
749197231
36.1 µH, 2.5 A, 1.58 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base36.1 µH
Rated Current Base2.5 A
Saturation Current Base1.58 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base51 mΩ
Leakage Inductance Base0.32 µH
SizeETD34 
Typegapped 
749197331
39.4 µH, 3.2 A, 1.65 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base39.4 µH
Rated Current Base3.2 A
Saturation Current Base1.65 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base34 mΩ
Leakage Inductance Base0.35 µH
SizeETD39 
Typegapped 
749197121
46.3 µH, 2.2 A, 0.83 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base46.3 µH
Rated Current Base2.2 A
Saturation Current Base0.83 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base45 mΩ
Leakage Inductance Base0.32 µH
SizeETD29 
Typegapped 
749197221
69.4 µH, 2.5 A, 0.67 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base69.4 µH
Rated Current Base2.5 A
Saturation Current Base0.67 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base51 mΩ
Leakage Inductance Base0.32 µH
SizeETD34 
Typegapped 
749197111
75.1 µH, 2.2 A, 0.4 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base75.1 µH
Rated Current Base2.2 A
Saturation Current Base0.4 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base45 mΩ
Leakage Inductance Base0.32 µH
SizeETD29 
Typegapped 
749197321
77.3 µH, 3.2 A, 0.68 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base77.3 µH
Rated Current Base3.2 A
Saturation Current Base0.68 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base34 mΩ
Leakage Inductance Base0.35 µH
SizeETD39 
Typegapped 
749197211
113.8 µH, 2.5 A, 0.33 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base113.8 µH
Rated Current Base2.5 A
Saturation Current Base0.33 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base51 mΩ
Leakage Inductance Base0.32 µH
SizeETD34 
Typegapped 
749197311
128.5 µH, 3.2 A, 0.32 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base128.5 µH
Rated Current Base3.2 A
Saturation Current Base0.32 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base34 mΩ
Leakage Inductance Base0.35 µH
SizeETD39 
Typegapped 
749197101
195 µH, 2.2 A, 0.25 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base195 µH
Rated Current Base2.2 A
Saturation Current Base0.25 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base45 mΩ
Leakage Inductance Base0.32 µH
SizeETD29 
Typeungapped 
749197201
280 µH, 2.5 A, 0.22 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base280 µH
Rated Current Base2.5 A
Saturation Current Base0.22 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base51 mΩ
Leakage Inductance Base0.32 µH
SizeETD34 
Typeungapped 
749197301
326.7 µH, 3.2 A, 0.2 A
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance Base326.7 µH
Rated Current Base3.2 A
Saturation Current Base0.2 A
Turns Ratio1 : 1 : 1 : 1 : 1 : 1 
Insulation Test Voltage500 V (AC)
DC Resistance Base34 mΩ
Leakage Inductance Base0.35 µH
SizeETD39 
Typeungapped