744870

DESIGN KIT FOR WE-DD

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: WURTH ELEKTRONIK
Product type: Inductor Kits & Assortments
Kit Contents:74 Components of the SMD Power Chokes; SVHC:No SVHC (07-Jul-2017)
SVHC: No SVHC (25-Jun-2025)
Kit Contents: 74 Components of the SMD Power Chokes
Product Range: -
Inductor Kit Type: SMD Coupled Inductors Design Kit
No. of Items in Kit: 74
Range of Inductance Values: 4.7µH to 220µH

Delivery and price
Units per pack	10
Price	167.07 €
Current stock	10+
Lead time	30 days

Datasheet

## **WE-DD SMD Coupled Inductors – SEPIC, CUK, BUCK-BOOST** 

||||**744 878 001**<br>**744 878 004**|**744 871 004**<br>**744 874 004**||**744 870 004**<br>**744 873 004**|||**744 870 221**|
|---|---|---|---|---|---|---|---|---|---|
||||L:<br>1.3  μH<br>L:<br>4.7  μH|L:<br>4.7  μH<br>L:<br>4.7  μH||L:<br>4.7  μH<br>L:<br>4.7  μH|||L:<br>220  μH|
||||DCR:<br>27  mΩ<br>DCR:<br>65  mΩ|DCR:<br>23  mΩ<br>DCR:<br>23  mΩ||DCR:<br>25  mΩ<br>DCR:<br>19  mΩ|||DCR:<br>530   mΩ|
||||IR:<br>4.4  A<br>IR:<br>1.3   A|IR:<br>3  A<br>IR:<br>4.22  A||IR:<br>3.6  A<br>IR:<br>4.87  A|||Isat:<br>0.9  A|
|||||||||||
||||**744 878 002**<br>**744 878 100**|**744 871 100**<br>**744 874 100**||**744 870 100**<br>**744 873 100**|||**744 873 221**|
||||L:<br>2.4  μH<br>L:<br>10  μH|L:<br>10  μH<br>L:<br>10  μH||L:<br>10  μH<br>L:<br>10  μH|||L:<br>220  μH|
|||**S**|DCR:<br>42  mΩ<br>IR:<br>3.6  A<br>DCR:<br>125  mΩ<br>IR:<br>1   A|DCR:<br>44  mΩ<br>IR:<br>2  A<br>DCR:<br>38  mΩ<br>IR:<br>3.28  A||DCR:<br>38  mΩ<br>IR:<br>2.7  A<br>DCR:<br>31   mΩ<br>IR:<br>3.81  A||**XL**|DCR:<br>540  mΩ<br>Isat:<br>0.91  A|
||**744 877 001**<br>L:<br>1.8  μH<br>DCR:<br>25  mΩ<br>IR:<br>4.7  A<br>**744 877 002**<br>L:<br>2.4  μH<br>DCR:<br>31  mΩ<br>IR:<br>4.2  A<br>**744 877 003**<br>L:<br>3.3  μH<br>DCR:<br>40  mΩ<br>IR:<br>3.7  A<br>**744 877 004**<br>L:<br>4.7  μH<br>DCR:<br>52  mΩ<br>IR:<br>1.55 A<br>**744 877 100**<br>L:<br>10  μH<br>DCR:<br>110  mΩ<br>IR:<br>1.1  A<br>**744 877 220**<br>L:<br>22  μH<br>DCR:<br>215  mΩ<br>IR:<br>0.8  A<br>**M**<br>~~Pt~~|||**744 871 220**<br>L:<br>22  μH<br>DCR:<br>67  mΩ<br>IR:<br>1.85   A<br>**744 871 470**<br>L:<br>47  μH<br>DCR:<br>145  mΩ<br>IR:<br>1.1  A<br>**744 871 101**<br>L:<br>100  μH<br>DCR:<br>293  mΩ<br>IR:<br>1.5  A<br>**744 874 220**<br>L:<br>22  μH<br>DCR:<br>67  mΩ<br>IR:<br>2.47  A<br>**744 874 470**<br>L:<br>47   μH<br>DCR:<br>130  mΩ<br>IR:<br>1.8  A<br>**744 874 101**<br>L:<br>100   μH<br>DCR:<br>285  mΩ<br>IR:<br>1.2  A<br>**L**||**744 870 220**<br>L:<br>22  μH<br>DCR:<br>62  mΩ<br>IR:<br>2.45  A<br>**744 870 470**<br>L:<br>47  μH<br>DCR:<br>125 mΩ<br>IR:<br>1.45 A<br>**744 870 101**<br>L:<br>100  μH<br>DCR:<br>230  mΩ<br>IR:<br>1.4  A<br>**744 873 220**<br>L:<br>22  μH<br>DCR:<br>58  mΩ<br>IR:<br>2.79  A<br>**744 873 470**<br>L:<br>47  μH<br>DCR:<br>110  mΩ<br>IR:<br>2.02  A<br>**744 873 101**<br>L:<br>100  μH<br>DCR:<br>235  mΩ<br>IR:<br>1.38  A<br>**744 870 910 0**<br>L:<br>10  μH<br>DCR:<br>33  mΩ<br>Isat:<br>3.2  A<br>**744 870 933 0**<br>L:<br>33  μH<br>DCR:<br>80  mΩ<br>Isat:<br>2  A<br>**744 870 922 0**<br>L:<br>22  μH<br>DCR:<br>64  mΩ<br>Isat:<br>3.5  A<br>**XXL**<br>**XL**<br>~~tb~~||||
|EMC COMPONENTS|INDUCTORS|TRANSFORMERS|RF COMPONENTS|CIRCUIT PROTECTION|EMC SHIELDINg MATERIAL|CONNECTORS|SWITCHES|ASSEMBLY TECHNIQUE|POWER ELEMENTS||||||||||
|**Important information:**Würth Elektronik’s design kits contain reference components. These components correspond with the current product development status on the day of supply. Exchange of the reference components to components||||||Würth Elektronik’s design kits contain reference components. These components correspond with the current product development status on the day of supply. Exchange of the reference components to components|||**All products**|
|with up-to-date product development status is not carried out automatically. No liability is taken for the use of these reference components. Therefore, please request new samples prior to releases for series production and product release.|||||||||**in stock!**|
|Please check datasheets on www.we-online.com for specifications. Würth Elektronik eiSos gmbH & Co. Kg, EMC & Inductive Solutions. © 2011||||||||||



**www.we-online.com**

Updated at April 22, 2026

Würth Elektronik is a globally recognized leader in the manufacture of electronic and electromechanical components, renowned for its exacting quality standards and reliable supply chain. Supported by an extensive international network of manufacturing facilities, the company provides robust, high-performance solutions designed to add value and durability to demanding engineering projects across a wide range of industries. Our comprehensive selection of Würth Elektronik components is strongly driven by their industry-leading passive technologies. The portfolio features an exceptional variety of magnetic components, highlighted by thousands of power and RF inductors engineered for maximum efficiency. This is complemented by a massive array of advanced capacitance solutions, including aluminium electrolytic, film, and polymer capacitors, built to satisfy the rigorous requirements of modern power management and high-frequency circuit designs. Beyond foundational passives, the offering encompasses critical solutions for signal integrity and circuit protection, such as common mode chokes, EMI shielding materials, and transient voltage suppressors like TVS diodes and varistors. Engineers will also find a highly reliable selection of electromechanical components, notably wire-to-board and pluggable terminal blocks, alongside specialized additions like wireless communication modules and thermal interface materials to complete complex system architectures.

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