Size Dimen­sions L
(mm)
W
(mm)
H
(mm)
Mount
NEW 5030
5.4 5.4 3.1 SMT
NEW 4020
4.1 4.1 2.1 SMT

Characteristics

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

Applications

  • Powertrain converters
  • Body electronics & lighting
  • Infotainment systems
  • DC/DC-converter 48 V / 12 V
  • POL-converter
  • DC/DC converter for field programmable gate array
  • BMS (battery management system)

Products

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5030
4020
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Data­sheet
Simu­lation
Downloads
Status
L (µH)
ISAT,10% (A)
ISAT,30% (A)
RDC typ. (mΩ)
RDC max. (mΩ)
fres (MHz)
IRP,40K (A)
Mount
Samples
78438440200016
0.16 µH, 12 A, 27.9 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.16 µH
Saturation Current @ 10% 12 A
Saturation Current @ 30% 27.9 A
DC Resistance 1.5 mΩ
DC Resistance 1.7 mΩ
Self Resonant Frequency 197 MHz
Performance Rated Current 24.2 A
Mount SMT 
78438450300022
0.22 µH, 11.8 A, 25.4 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 0.22 µH
Saturation Current @ 10% 11.8 A
Saturation Current @ 30% 25.4 A
DC Resistance 1.5 mΩ
DC Resistance 1.7 mΩ
Self Resonant Frequency 155 MHz
Performance Rated Current 28.1 A
Mount SMT 
78438440200030
0.3 µH, 8.4 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
Saturation Current @ 10% 8.4 A
Saturation Current @ 30% 17.6 A
DC Resistance 2 mΩ
DC Resistance 2.3 mΩ
Self Resonant Frequency 135 MHz
Performance Rated Current 23.2 A
Mount SMT 
78438440200040
0.4 µH, 7.3 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
Saturation Current @ 10% 7.3 A
Saturation Current @ 30% 14.8 A
DC Resistance 3.8 mΩ
DC Resistance 4.4 mΩ
Self Resonant Frequency 122 MHz
Performance Rated Current 16.9 A
Mount SMT 
78438450300047
0.47 µH, 9.4 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
Saturation Current @ 10% 9.4 A
Saturation Current @ 30% 20 A
DC Resistance 2.4 mΩ
DC Resistance 2.8 mΩ
Self Resonant Frequency 84 MHz
Performance Rated Current 23 A
Mount SMT 
78438450300060
0.6 µH, 9.5 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
Saturation Current @ 10% 9.5 A
Saturation Current @ 30% 21.2 A
DC Resistance 2.8 mΩ
DC Resistance 3.2 mΩ
Self Resonant Frequency 73 MHz
Performance Rated Current 21.5 A
Mount SMT 
78438440200065
0.65 µH, 6.2 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
Saturation Current @ 10% 6.2 A
Saturation Current @ 30% 12.6 A
DC Resistance 4.8 mΩ
DC Resistance 5.5 mΩ
Self Resonant Frequency 80 MHz
Performance Rated Current 15.2 A
Mount SMT 
78438450300082
0.82 µH, 8.1 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
Saturation Current @ 10% 8.1 A
Saturation Current @ 30% 16.7 A
DC Resistance 3.5 mΩ
DC Resistance 4 mΩ
Self Resonant Frequency 55 MHz
Performance Rated Current 19 A
Mount SMT 
7843844020010
1 µH, 4.9 A, 9.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1 µH
Saturation Current @ 10% 4.9 A
Saturation Current @ 30% 9.8 A
DC Resistance 6.9 mΩ
DC Resistance 7.9 mΩ
Self Resonant Frequency 59 MHz
Performance Rated Current 12.1 A
Mount SMT 
7843845030010
1 µH, 7 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
Saturation Current @ 10% 7 A
Saturation Current @ 30% 14.3 A
DC Resistance 5.2 mΩ
DC Resistance 5.8 mΩ
Self Resonant Frequency 52 MHz
Performance Rated Current 15.8 A
Mount SMT 
7843844020012
1.2 µH, 4.3 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
Saturation Current @ 10% 4.3 A
Saturation Current @ 30% 8.8 A
DC Resistance 8.4 mΩ
DC Resistance 9.8 mΩ
Self Resonant Frequency 53 MHz
Performance Rated Current 11 A
Mount SMT 
7843845030012
1.2 µH, 6.8 A, 14.3 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 1.2 µH
Saturation Current @ 10% 6.8 A
Saturation Current @ 30% 14.3 A
DC Resistance 4.5 mΩ
DC Resistance 5.2 mΩ
Self Resonant Frequency 43 MHz
Performance Rated Current 17.2 A
Mount SMT 
7843844020015
1.5 µH, 4.1 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
Saturation Current @ 10% 4.1 A
Saturation Current @ 30% 8.4 A
DC Resistance 10 mΩ
DC Resistance 11.5 mΩ
Self Resonant Frequency 50 MHz
Performance Rated Current 10.3 A
Mount SMT 
7843845030015
1.5 µH, 6 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
Saturation Current @ 10% 6 A
Saturation Current @ 30% 12.3 A
DC Resistance 5.5 mΩ
DC Resistance 6.3 mΩ
Self Resonant Frequency 36 MHz
Performance Rated Current 14.9 A
Mount SMT 
7843844020018
1.8 µH, 3.6 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
Saturation Current @ 10% 3.6 A
Saturation Current @ 30% 7.1 A
DC Resistance 11.9 mΩ
DC Resistance 13.6 mΩ
Self Resonant Frequency 42 MHz
Performance Rated Current 9.5 A
Mount SMT 
7843844020022
2.2 µH, 2.9 A, 5.8 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 2.2 µH
Saturation Current @ 10% 2.9 A
Saturation Current @ 30% 5.8 A
DC Resistance 15.6 mΩ
DC Resistance 17.9 mΩ
Self Resonant Frequency 37 MHz
Performance Rated Current 7.8 A
Mount SMT 
7843845030022
2.2 µH, 5.2 A, 10.5 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 2.2 µH
Saturation Current @ 10% 5.2 A
Saturation Current @ 30% 10.5 A
DC Resistance 8.1 mΩ
DC Resistance 9.3 mΩ
Self Resonant Frequency 35 MHz
Performance Rated Current 12.4 A
Mount SMT 
7843844020033
3.3 µH, 2.6 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
Saturation Current @ 10% 2.6 A
Saturation Current @ 30% 5.3 A
DC Resistance 26.6 mΩ
DC Resistance 30.6 mΩ
Self Resonant Frequency 29 MHz
Performance Rated Current 6.1 A
Mount SMT 
7843845030033
3.3 µH, 4 A, 8.2 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 3.3 µH
Saturation Current @ 10% 4 A
Saturation Current @ 30% 8.2 A
DC Resistance 12.9 mΩ
DC Resistance 14.8 mΩ
Self Resonant Frequency 25 MHz
Performance Rated Current 10 A
Mount SMT 
7843844020047
4.7 µH, 2.8 A, 5.7 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 4.7 µH
Saturation Current @ 10% 2.8 A
Saturation Current @ 30% 5.7 A
DC Resistance 40.3 mΩ
DC Resistance 46.4 mΩ
Self Resonant Frequency 25 MHz
Performance Rated Current 5.2 A
Mount SMT 
7843845030047
4.7 µH, 3.7 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
Saturation Current @ 10% 3.7 A
Saturation Current @ 30% 7.7 A
DC Resistance 22.5 mΩ
DC Resistance 24.5 mΩ
Self Resonant Frequency 21 MHz
Performance Rated Current 8.2 A
Mount SMT 
7843845030056
5.6 µH, 3.3 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
Saturation Current @ 10% 3.3 A
Saturation Current @ 30% 6.8 A
DC Resistance 24.5 mΩ
DC Resistance 27 mΩ
Self Resonant Frequency 19 MHz
Performance Rated Current 7.1 A
Mount SMT 
7843845030068
6.8 µH, 3.2 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
Saturation Current @ 10% 3.2 A
Saturation Current @ 30% 6.8 A
DC Resistance 28.3 mΩ
DC Resistance 31.7 mΩ
Self Resonant Frequency 18 MHz
Performance Rated Current 6.5 A
Mount SMT 
7843845030082
8.2 µH, 2.6 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
Saturation Current @ 10% 2.6 A
Saturation Current @ 30% 5.9 A
DC Resistance 34 mΩ
DC Resistance 39 mΩ
Self Resonant Frequency 15 MHz
Performance Rated Current 6.1 A
Mount SMT 
7843845030100
10 µH, 2.5 A, 5.4 A
Simu­lation
Status New i | Product is new in our portfolio and production is active. Expected lifetime: >10 years.
Inductance 10 µH
Saturation Current @ 10% 2.5 A
Saturation Current @ 30% 5.4 A
DC Resistance 41.5 mΩ
DC Resistance 47.7 mΩ
Self Resonant Frequency 12 MHz
Performance Rated Current 5.5 A
Mount SMT 
7843845030120
12 µH, 2.1 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
Saturation Current @ 10% 2.1 A
Saturation Current @ 30% 4.9 A
DC Resistance 52.3 mΩ
DC Resistance 57 mΩ
Self Resonant Frequency 11 MHz
Performance Rated Current 5 A
Mount SMT 
7843845030150
15 µH, 1.9 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
Saturation Current @ 10% 1.9 A
Saturation Current @ 30% 4.3 A
DC Resistance 64.5 mΩ
DC Resistance 74.4 mΩ
Self Resonant Frequency 10 MHz
Performance Rated Current 4.5 A
Mount SMT 

Innovative Power Inductor

Ultra Low Losses. WE-MXGA.

Innovative Power Inductor

Ultra Low Losses. WE-MXGA.

With the WE-MXGA Würth Elektronik offers the newest molded power inductor series for automotive applications. 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 DC-DC converters used in battery management systems (BMS) and infotainment or ADAS modules.

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