744771139 This is a fixed shielded wirewound inductor with 39µH inductance, ±20% tolerance, and 2.5A rated current. It is AEC-Q200 Grade 1 qualified and RoHS compliant.
Mfr Part #:

744771139

Available from 1 distributors
Mfr Name: Würth Elektronik
Würth Elektronik
This is a fixed shielded wirewound inductor with 39µH inductance, ±20% tolerance, and 2.5A rated current. It is AEC-Q200 Grade 1 qualified and RoHS compliant.
Total Stock: 425 pcs
$ Price Range: $1.18 - $2.26

744771139 Available from 1 distributor

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Non-Authorised
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425 pcs
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744771139 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Current Rating (Amps)
DC Resistance (DCR)
Frequency
Halogen Free
Height
Inductance
Length
Material
Mounting Type
Operating Temperature
Operating Voltage
Performance Rated Current (IRP,40K)
Rated Current (IR,40K)
Ratings
Saturation Current (Typical @ 10% |ΔL/L|)
Saturation Current (Typical @ 30% |ΔL/L|)
Shielding
Tape & Reel
Tolerance
Type
Width

744771139 Description

Short technical summary and product information.

The 744771139 is a shielded power inductor from Würth Elektronik's WE-PD series. It features a drum core, wirewound construction with ferrite core material, and is surface-mount packaged in a nonstandard case measuring 12.00mm x 12.00mm with a maximum height of 6.00mm.

 

Electrically, the inductor offers 39µH inductance at 100kHz/250mV with ±20% tolerance. The DC resistance is 68mΩ max at 20°C. It has a rated current of 2.5A max (ΔT=40K) and a performance rated current of 4.3A max (per IEC 62024-2-2020, Class C). Saturation current is 2.7A typ at 10% inductance drop and 3.5A typ at 30% drop. The self-resonant frequency is 10MHz typ, and maximum operating voltage is 120V DC.

 

This component is qualified to AEC-Q200 Grade 1, making it suitable for automotive applications. It is RoHS3, REACH, and Halogen Free compliant, with MSL 1 (unlimited). The operating temperature range is -40°C to +125°C. The inductor is designed for power supply and filtering applications in demanding environments.

744771139 Quick Information

Product Type: Fixed Inductor
Canonical Name: WE-PD SMT Shielded Power Inductor, 39µH, ±20%, 2.5A, AEC-Q200
Subcategory: Fixed Inductors

744771139 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Conform or declared
Lead Free: Lead Free

744771139 Estimated Pricing

Qty Low High
1+ $2.26 $2.26
10+ $2.17 $2.17
50+ $1.96 $1.96
100+ $1.75 $1.75
250+ $1.61 $1.61
500+ $1.38 $1.38
1,000+ $1.18 $1.18

Estimated market price range - modelled values for guidance only, not live distributor offers.

744771139 Features

  • Shielded wirewound construction with ferrite core.
  • Rated current up to 2.5A maximum.
  • DC resistance 68mΩ maximum.
  • AEC-Q200 Grade 1 qualified.
  • Operating temperature -40°C to +125°C.

744771139 Applications

  • Used in automotive power supply circuits.
  • Ideal for DC-DC converter filtering.
  • Suitable for industrial electronics.
  • Output filtering in battery-powered devices.

744771139 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the inductance of the 744771139?

The inductance is 39µH at 100kHz/250mV with ±20% tolerance.

What is the rated current?

The rated current is 2.5A max (ΔT=40K). The performance rated current is 4.3A max per IEC 62024-2-2020, Class C.

What is the DC resistance?

The DC resistance is 68mΩ max at 20°C.

What is the self-resonant frequency?

The self-resonant frequency is 10MHz typ.

What is the package size?

The package measures 12.00mm x 12.00mm with a maximum height of 6.00mm, surface mount (nonstandard case).

Is this inductor qualified for automotive use?

Yes, it is AEC-Q200 Grade 1 qualified.

What is the operating temperature range?

The operating temperature range is -40°C to +125°C.

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