OverviewAll product unitsProduct unitPassive ComponentsProduct groupPower MagneticsProduct familyCoupled Power InductorsProduct seriesWE-DD SMT Shielded Coupled Inductor

WE-DD SMT Shielded Coupled Inductor EXTENDED

WE-DD SMT Shielded Coupled Inductor
 Size Dimen­sionsL
(mm)
W
(mm)
H
(mm)
EXT. 7332 straight 7.3 7.3 4
EXT. 7345 straight 7.3 7.3 4.8
EXT. 1260 straight 12.5 12.5 6.5
EXT. 1280 straight 12.5 12.5 8.5
EXT. 1260 crossed 12.5 12.5 6.5
EXT. 1280 crossed 12.5 12.5 8.5
EXT. 1210 crossed 12.5 12.5 10.5
NEW 7345 crossed 7.3 7.3 4.8
NEW 7355 crossed 7.3 7.3 5.8

Characteristics

  • 1:1 transformer
  • Double inductor with two identical windings
  • 5 different sizes available
  • Operating temperature: –40 ºC to +125 ºC
  • Recommended solder profile: Reflow
  • Custom designs on request

Applications

  • For SEPIC and CUK topologies
  • Flyback applications
  • Switching regulators with second, unregulated output voltage

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
7332 straight
7345 straight
1260 straight
1280 straight
1260 crossed
1280 crossed
1210 crossed
7345 crossed
7355 crossed
Order Code Data­sheet Simu­lation DownloadsL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
TypeDesign Kit Samples
NEW744878001SPEC
8 files 1.3 1.3 4.4 4.4 6.3 0.027 0.027 0.035 0.035 60744870
NEW744874001SPEC
8 files 1.5 1.5 5.85 5.85 14 0.012 0.012 0.016 0.016 70
NEW744873001SPEC
8 files 1.5 1.5 6.25 6.25 18 0.011 0.011 0.015 0.015 75
NEW7448700015SPEC
8 files 1.5 1.5 8.6 8.6 17.5 0.012 0.012 0.016 0.016 60
NEW744877001SPEC
8 files 1.8 1.8 4.7 4.7 6.5 0.025 0.025 0.034 0.034 58744870
7448709022SPEC
8 files 2.2 2.2 4.1 4.1 19 0.015 0.015 0.017 0.017 45 Crossed
NEW744878002SPEC
8 files 2.4 2.4 3.6 3.6 4.8 0.042 0.042 0.052 0.052 53744870
NEW744877002SPEC
8 files 2.4 2.4 4.2 4.2 5.6 0.031 0.031 0.042 0.042 50744870
NEW744874002SPEC
8 files 2.4 2.4 5.5 5.5 11.5 0.013 0.013 0.017 0.017 54
NEW744873002SPEC
8 files 2.4 2.4 6 6 14 0.012 0.012 0.016 0.016 54
NEW744870002SPEC
8 files 2.4 2.4 7.8 7.8 15 0.014 0.014 0.018 0.018 40
NEW744878003SPEC
8 files 3.3 3.3 3.3 3.3 4 0.052 0.052 0.064 0.064 49
NEW744877003SPEC
8 files 3.3 3.3 3.7 3.7 5 0.04 0.04 0.052 0.052 46744870
NEW744874003SPEC
8 files 3.3 3.3 4.91 4.91 8.9 0.017 0.017 0.021 0.021 45
NEW744873003SPEC
8 files 3.3 3.3 5.14 5.14 11 0.017 0.017 0.022 0.022 41
NEW744870003SPEC
8 files 3.3 3.3 7.1 7.1 12 0.016 0.016 0.021 0.021 30
7448709033SPEC
8 files 3.3 3.3 3.7 3.7 15.5 0.017 0.017 0.02 0.02 35 Crossed
NEW744878004SPEC
8 files 4.7 4.7 1.3 1.3 3 0.065 0.065 0.075 0.075 46744870
NEW744877004SPEC
8 files 4.7 4.7 2.55 2.55 4 0.052 0.052 0.064 0.064 42744870
NEW744874004SPEC
8 files 4.7 4.7 4.22 4.22 8 0.023 0.023 0.028 0.028 39744870
NEW744871004SPEC
8 files 4.7 4.7 3 3 8 0.023 0.023 0.028 0.028 20744870
NEW744873004SPEC
8 files 4.7 4.7 4.87 4.87 10 0.019 0.019 0.024 0.024 32744870
NEW744870004SPEC
8 files 4.7 4.7 3.6 3.6 10 0.025 0.025 0.03 0.03 34744870
7448709047SPEC
8 files 4.7 4.7 3.6 3.6 13 0.019 0.019 0.023 0.023 30 Crossed
NEW744878005SPEC
8 files 5.6 5.6 1.5 1.5 3 0.095 0.095 0.12 0.12 26
NEW744877005SPEC
8 files 5.6 5.6 1.9 1.9 3.5 0.08 0.08 0.095 0.095 23
NEW744878006SPEC
8 files 6.8 6.8 1.4 1.4 2.8 0.11 0.11 0.135 0.135 25
NEW744877006SPEC
8 files 6.8 6.8 1.8 1.8 3.2 0.085 0.085 0.102 0.102 20
NEW744874006SPEC
8 files 6.8 6.8 3.9 3.9 6.8 0.027 0.027 0.032 0.032 33
NEW744871006SPEC
8 files 6.8 6.8 2.8 2.8 6.5 0.035 0.035 0.04 0.04 20
NEW744870006SPEC
8 files 6.8 6.8 3.2 3.2 8 0.027 0.027 0.035 0.035 18
7448709068SPEC
8 files 6.8 6.8 3.3 3.3 11.5 0.026 0.026 0.031 0.031 23 Crossed
NEW744878008SPEC
8 files 8.2 8.2 1.3 1.3 2.7 0.115 0.115 0.14 0.14 22
NEW744877008SPEC
8 files 8.2 8.2 1.7 1.7 2.9 0.091 0.091 0.11 0.11 17
NEW744878100SPEC
8 files 10 10 1 1 2 0.125 0.125 0.15 0.15 30744870
744877100SPEC
8 files 10 10 1.1 1.1 2.8 0.11 0.11 0.12 0.12 27 Straight744870
NEW744874100SPEC
8 files 10 10 3.28 3.28 5.25 0.038 0.038 0.044 0.044 24744870
NEW744871100SPEC
8 files 10 10 2 2 5 0.044 0.044 0.05 0.05 20744870
NEW744873100SPEC
8 files 10 10 4.2 4.2 7.5 0.031 0.031 0.042 0.042 20744870
NEW744870100SPEC
8 files 10 10 2.7 2.7 7 0.038 0.038 0.044 0.044 18744870
NEW7448709100SPEC
8 files 10 10 3.2 3.2 8 0.033 0.033 0.04 0.04 20744870
NEW744873150SPEC
8 files 15 15 3.3 3.3 6.1 0.041 0.041 0.055 0.055 14
NEW744878220SPEC
8 files 22 22 0.7 0.7 1.5 0.245 0.245 0.3 0.3 20
NEW744877220SPEC
8 files 22 22 0.8 0.8 1.8 0.215 0.215 0.26 0.26 16744870
NEW744874220SPEC
8 files 22 22 2.47 2.47 3.3 0.067 0.067 0.08 0.08 15.5744870
NEW744871220SPEC
8 files 22 22 1.85 1.85 3 0.067 0.067 0.09 0.09 14744870
NEW744873220SPEC
8 files 22 22 2.79 2.79 5 0.058 0.058 0.07 0.07 11.5744870
NEW744870220SPEC
8 files 22 22 2.45 2.45 5.2 0.062 0.062 0.08 0.08 10744870
NEW7448709220SPEC
8 files 22 22 3.5 3.5 5 0.064 0.064 0.08 0.08 10744870
744877330SPEC
8 files 33 33 0.7 0.7 1.5 0.4 0.4 0.5 0.5 8 Straight
NEW744871330SPEC
8 files 33 33 1.2 1.2 2.8 0.125 0.125 0.17 0.17 6
NEW744873330SPEC
8 files 33 33 2.25 2.25 3.9 0.087 0.087 0.105 0.105 8.9
NEW7448709330SPEC
8 files 33 33 2 2 4.4 0.08 0.08 0.1 0.1 6744870
NEW744878470SPEC
8 files 47 47 0.9 0.9 1 0.6 0.6 0.75 0.75 8
NEW744874470SPEC
8 files 47 47 1.8 1.8 2.75 0.13 0.13 0.15 0.15 11744870
NEW744871470SPEC
8 files 47 47 1.1 1.1 2.4 0.145 0.145 0.18 0.18 5744870
NEW744873470SPEC
8 files 47 47 2.02 2.02 3.1 0.11 0.11 0.12 0.12 7.8744870
NEW744870470SPEC
8 files 47 47 1.45 1.45 3.1 0.125 0.125 0.15 0.15 5744870
NEW7448709470SPEC
8 files 47 47 1.9 1.9 3.6 0.106 0.106 0.13 0.13 4
NEW744873680SPEC
8 files 68 68 1.66 1.66 2.8 0.163 0.163 0.18 0.18 5.5
NEW744870680SPEC
8 files 68 68 1.35 1.35 3 0.17 0.17 0.215 0.215 3.7
NEW744878101SPEC
8 files 100 100 0.3 0.3 0.7 1.4 1.4 1.73 1.73 4
NEW744877101SPEC
8 files 100 100 0.65 0.65 0.9 1.029 1.029 1.3 1.3 4
NEW744874101SPEC
8 files 100 100 1.2 1.2 1.7 0.285 0.285 0.32 0.32 6744870
NEW744871101SPEC
8 files 100 100 1.5 1.5 1.8 0.293 0.293 0.36 0.36 4744870
NEW744873101SPEC
8 files 100 100 1.38 1.38 2.2 0.235 0.235 0.255 0.255 4.4744870
NEW744870101SPEC
8 files 100 100 1.4 1.4 2 0.23 0.23 0.3 0.3 4744870
NEW744870151SPEC
8 files 150 150 1 1 1.7 0.34 0.34 0.4 0.4 2.3
NEW744873221SPEC
8 files 220 220 0.91 0.91 1.6 0.54 0.54 0.58 0.58 2.8744870
NEW744870221SPEC
8 files 220 220 0.9 0.9 1.4 0.53 0.53 0.65 0.65 2744870
NEW744875221SPEC
3 files 220 220 0.46 0.46 0.58 1.94 1.94 2.32 2.32 4.1 Crossed
NEW744879221SPEC
220 220 0.44 0.44 0.7 1.94 1.94 2.3 2.3 3.2 Crossed
744870471SPEC
8 files 470 470 0.7 0.7 0.9 1 1 1.2 1.2 0.65 Crossed
Order Code Data­sheet Simu­lation
NEW744878001SPEC
NEW744874001SPEC
NEW744873001SPEC
NEW7448700015SPEC
NEW744877001SPEC
7448709022SPEC
NEW744878002SPEC
NEW744877002SPEC
NEW744874002SPEC
NEW744873002SPEC
NEW744870002SPEC
NEW744878003SPEC
NEW744877003SPEC
NEW744874003SPEC
NEW744873003SPEC
NEW744870003SPEC
7448709033SPEC
NEW744878004SPEC
NEW744877004SPEC
NEW744874004SPEC
NEW744871004SPEC
NEW744873004SPEC
NEW744870004SPEC
7448709047SPEC
NEW744878005SPEC
NEW744877005SPEC
NEW744878006SPEC
NEW744877006SPEC
NEW744874006SPEC
NEW744871006SPEC
NEW744870006SPEC
7448709068SPEC
NEW744878008SPEC
NEW744877008SPEC
NEW744878100SPEC
744877100SPEC
NEW744874100SPEC
NEW744871100SPEC
NEW744873100SPEC
NEW744870100SPEC
NEW7448709100SPEC
NEW744873150SPEC
NEW744878220SPEC
NEW744877220SPEC
NEW744874220SPEC
NEW744871220SPEC
NEW744873220SPEC
NEW744870220SPEC
NEW7448709220SPEC
744877330SPEC
NEW744871330SPEC
NEW744873330SPEC
NEW7448709330SPEC
NEW744878470SPEC
NEW744874470SPEC
NEW744871470SPEC
NEW744873470SPEC
NEW744870470SPEC
NEW7448709470SPEC
NEW744873680SPEC
NEW744870680SPEC
NEW744878101SPEC
NEW744877101SPEC
NEW744874101SPEC
NEW744871101SPEC
NEW744873101SPEC
NEW744870101SPEC
NEW744870151SPEC
NEW744873221SPEC
NEW744870221SPEC
NEW744875221SPEC
NEW744879221SPEC
744870471SPEC
Samples
Order Code Data­sheet Simu­lation DownloadsL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
TypeDesign Kit 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.

Assortments

Articles from this product series can be found in the following assortments:

Videos

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