Size Dimen­sions L
(mm)
W
(mm)
H
(mm)
Mount
EXT. 4020
4.1 4.1 2.1 SMD/SMT Soldering
EXT. 5030
5.4 5.4 3.1 SMD/SMT Soldering

Characteristics

  • Innovative iron alloy material
  • Ultra low RDC and AC losses
  • High efficiency and current capability
  • Optimized for high switching frequencies beyond 1 MHz
  • Compact design
  • Magnetically shielded construction
  • Operating temperature: -40 °C to 125°C

Applications

  • DC/DC-converter for high current power supplies
  • DC/DC-converter for Field Programmable Gate Array (FPGA)
  • POL-converters
  • Portable power like PDA, digital camera
  • Mainboards/graphic cards
  • Battery powered devices
  • Wireless communication devices
  • Power supplies for smartphones, tablet PCs and other mobile devices
  • High frequency applications (GaN and SiC)

Products

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4020
5030
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Data­sheet
Simu­lation
Downloads
Status
L (µH)
IRP,40K (A)
ISAT,30% (A)
RDC typ. (mΩ)
fres (MHz)
VOP (V)
Mount
Design Kit
Samples
74438440200016
0.16 µH, 24.2 A, 27.9 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 0.16 µH
Performance Rated Current 24.2 A
Saturation Current @ 30% 27.9 A
DC Resistance 1.5 mΩ
Self Resonant Frequency 197 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438450300022
0.22 µH, 28.1 A, 25.4 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 0.22 µH
Performance Rated Current 28.1 A
Saturation Current @ 30% 25.4 A
DC Resistance 1.5 mΩ
Self Resonant Frequency 155 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438440200030
0.3 µH, 23.2 A, 17.6 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.3 µH
Performance Rated Current 23.2 A
Saturation Current @ 30% 17.6 A
DC Resistance 2 mΩ
Self Resonant Frequency 135 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438440200040
0.4 µH, 16.9 A, 14.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.4 µH
Performance Rated Current 16.9 A
Saturation Current @ 30% 14.8 A
DC Resistance 3.8 mΩ
Self Resonant Frequency 122 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438450300047
0.47 µH, 23 A, 20 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.47 µH
Performance Rated Current 23 A
Saturation Current @ 30% 20 A
DC Resistance 2.4 mΩ
Self Resonant Frequency 84 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438450300060
0.6 µH, 21.5 A, 21.2 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.6 µH
Performance Rated Current 21.5 A
Saturation Current @ 30% 21.2 A
DC Resistance 2.8 mΩ
Self Resonant Frequency 73 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438440200065
0.65 µH, 15.2 A, 12.6 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.65 µH
Performance Rated Current 15.2 A
Saturation Current @ 30% 12.6 A
DC Resistance 4.8 mΩ
Self Resonant Frequency 80 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
74438450300082
0.82 µH, 19 A, 16.7 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.82 µH
Performance Rated Current 19 A
Saturation Current @ 30% 16.7 A
DC Resistance 3.5 mΩ
Self Resonant Frequency 55 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020010
1 µH, 12.1 A, 9.8 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 1 µH
Performance Rated Current 12.1 A
Saturation Current @ 30% 9.8 A
DC Resistance 6.9 mΩ
Self Resonant Frequency 59 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030010
1 µH, 15.8 A, 14.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1 µH
Performance Rated Current 15.8 A
Saturation Current @ 30% 14.3 A
DC Resistance 5.2 mΩ
Self Resonant Frequency 52 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020012
1.2 µH, 11 A, 8.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.2 µH
Performance Rated Current 11 A
Saturation Current @ 30% 8.8 A
DC Resistance 8.4 mΩ
Self Resonant Frequency 53 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030012
1.2 µH, 17.2 A, 14.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.2 µH
Performance Rated Current 17.2 A
Saturation Current @ 30% 14.3 A
DC Resistance 4.5 mΩ
Self Resonant Frequency 43 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020015
1.5 µH, 10.3 A, 8.4 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.5 µH
Performance Rated Current 10.3 A
Saturation Current @ 30% 8.4 A
DC Resistance 10 mΩ
Self Resonant Frequency 50 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030015
1.5 µH, 14.9 A, 12.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.5 µH
Performance Rated Current 14.9 A
Saturation Current @ 30% 12.3 A
DC Resistance 5.5 mΩ
Self Resonant Frequency 36 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020018
1.8 µH, 9.5 A, 7.1 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.8 µH
Performance Rated Current 9.5 A
Saturation Current @ 30% 7.1 A
DC Resistance 11.9 mΩ
Self Resonant Frequency 42 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030022
2.2 µH, 12.4 A, 10.5 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 2.2 µH
Performance Rated Current 12.4 A
Saturation Current @ 30% 10.5 A
DC Resistance 8.1 mΩ
Self Resonant Frequency 35 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020022
2.2 µH, 7.8 A, 5.8 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 2.2 µH
Performance Rated Current 7.8 A
Saturation Current @ 30% 5.8 A
DC Resistance 15.6 mΩ
Self Resonant Frequency 37 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030033
3.3 µH, 10 A, 8.2 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 3.3 µH
Performance Rated Current 10 A
Saturation Current @ 30% 8.2 A
DC Resistance 12.9 mΩ
Self Resonant Frequency 25 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020033
3.3 µH, 6.1 A, 5.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 3.3 µH
Performance Rated Current 6.1 A
Saturation Current @ 30% 5.3 A
DC Resistance 26.6 mΩ
Self Resonant Frequency 29 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443844020047
4.7 µH, 5.2 A, 5.7 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 4.7 µH
Performance Rated Current 5.2 A
Saturation Current @ 30% 5.7 A
DC Resistance 40.3 mΩ
Self Resonant Frequency 25 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030047
4.7 µH, 8.2 A, 7.7 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 4.7 µH
Performance Rated Current 8.2 A
Saturation Current @ 30% 7.7 A
DC Resistance 22.5 mΩ
Self Resonant Frequency 21 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030056
5.6 µH, 7.1 A, 6.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 5.6 µH
Performance Rated Current 7.1 A
Saturation Current @ 30% 6.8 A
DC Resistance 24.5 mΩ
Self Resonant Frequency 19 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030068
6.8 µH, 6.5 A, 6.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 6.8 µH
Performance Rated Current 6.5 A
Saturation Current @ 30% 6.8 A
DC Resistance 28.3 mΩ
Self Resonant Frequency 18 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030082
8.2 µH, 6.1 A, 5.9 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 8.2 µH
Performance Rated Current 6.1 A
Saturation Current @ 30% 5.9 A
DC Resistance 34 mΩ
Self Resonant Frequency 15 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030100
10 µH, 5.5 A, 5.4 A
Simu­lation
Status Active i | Production is active. Expected lifetime: >10 years.
Inductance 10 µH
Performance Rated Current 5.5 A
Saturation Current @ 30% 5.4 A
DC Resistance 41.5 mΩ
Self Resonant Frequency 12 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030120
12 µH, 5 A, 4.9 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 12 µH
Performance Rated Current 5 A
Saturation Current @ 30% 4.9 A
DC Resistance 52.3 mΩ
Self Resonant Frequency 11 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit
7443845030150
15 µH, 4.5 A, 4.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 15 µH
Performance Rated Current 4.5 A
Saturation Current @ 30% 4.3 A
DC Resistance 64.5 mΩ
Self Resonant Frequency 10 MHz
Operating Voltage 80 V
Mount SMD/SMT Soldering 
Design Kit

Innovative Power Inductor

Ultra Low Losses. WE-MXGI.

Innovative Power Inductor

Ultra Low Losses. WE-MXGI.

With the WE-MXGI Würth Elektronik offers the newest molded power inductor series. It combines an innovative iron alloy material with an optimized wire geometry for lowest RDC and AC losses. This leads to high efficiency and current capability in a compact design. It is therefore ideal for high frequency DC/DC converters utilizing the latest GaN and SiC transistor technologies.

SMT Power Inductor in the fog

The innovative design in detail

Extremely High Power Density

Diagram about the losses of WE-MXGA

Thanks to the innovative core material and the unique wire geometry, lower RDC values can be achieved.

Diagram about the power losses of WE-MXGA

In combination with the lower AC losses, the overall losses of your switching regulator can be reduced significantly.

REDEXPERT loss simulation

Find the best inductor!

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.

Different diagrams from Redexpert summarised in a banner

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