74477003 The 74477003 is a 3.5 µH shielded power inductor from Würth Elektronik's WE-PD series. It features a rated current of 10.2 A and a maximum DC resistance of 11 mΩ.
Mfr Part #:

74477003

Available from 2 distributors
Mfr Name: Würth Elektronik
Würth Elektronik
The 74477003 is a 3.5 µH shielded power inductor from Würth Elektronik's WE-PD series. It features a rated current of 10.2 A and a maximum DC resistance of 11 mΩ.
Total Stock: 85 pcs
$ Price Range: $1.34 - $2.40

74477003 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
45 pcs
45 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
40 pcs
40 pcs On Request 1 On Request On Request On Request On Request On Request

74477003 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
AEC-Q200
Automotive Grade
Current
Current Rating (Amps)
DC Resistance (DCR)
DC Resistance (Typical/Maximum @ @ 20 °C)
Frequency
Halogen Free
Height
Inductance
Industrial Grade
Length
Material
Mounting Type
Operating Temperature
Operating Voltage (DC)
Performance Rated Current (IRP,40K)
Rated Current (Maximum @ ΔT = 40 K)
Ratings
SVHC Present
Saturation Current (Typical @ 10% inductance drop)
Saturation Current (Typical @ 30% inductance drop)
Shielding
Storage Temperature
Tape & Reel
Tolerance
Type
Width

74477003 Description

Short technical summary and product information.

The Würth Elektronik 74477003 is a shielded drum core wirewound inductor from the WE-PD series, designed for high-current power applications. It offers an inductance of 3.5 µH with a tolerance of ±30%. The component is rated for a continuous current of 10.2 A (IR,40K) and a performance rated current of 12 A (IRP,40K) per IEC 62024-2-2020. DC resistance is typically 8 mΩ, with a maximum of 11 mΩ. The self-resonant frequency is 37.5 MHz, and the operating voltage is up to 120 V DC.

 

This inductor features a shielded ferrite core to minimize electromagnetic interference. The package measures 12.0 mm x 12.0 mm with a maximum height of 8.0 mm, making it suitable for surface mount assembly. Operating temperature range is -40°C to +125°C, with storage conditions below 40°C and 75% RH. The component is AEC-Q200 Grade 1 qualified, ensuring reliability in automotive environments. It is RoHS, REACH, and Halogen Free compliant, with MSL level 1.

74477003 Quick Information

Product Type: Shielded Power Inductor
Series: WE-PD
Canonical Name: WE-PD SMT Shielded Power Inductor, 3.5 µH, 10.2 A, 11 mOhm
Subcategory: Shielded Wirewound Inductor

74477003 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 75
REACH Status: REACH Conform or declared
Lead Free: Yes

74477003 Estimated Pricing

Qty Low High
1+ $2.40 $2.40
10+ $2.24 $2.24
50+ $2.08 $2.08
100+ $1.90 $1.90
250+ $1.70 $1.70
500+ $1.49 $1.49
1,000+ $1.34 $1.34

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

74477003 Features

  • Shielded ferrite core for EMI reduction.
  • Rated current up to 10.2 A (IR,40K).
  • Low DCR of 8 mΩ typical.
  • AEC-Q200 Grade 1 automotive qualified.
  • Self-resonant frequency of 37.5 MHz.

74477003 Applications

  • Ideal for DC-DC converters and power supplies.
  • Used in automotive electronics and engine control units.
  • Suitable for high-current filtering in portable devices.
  • Applicable in industrial power management systems.

74477003 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the inductance value and tolerance?

The inductance is 3.5 µH with a tolerance of ±30% (measured at 100 kHz, 250 mV).

What is the rated current of this inductor?

The rated current is 10.2 A max (IR,40K) per IEC 62024-2-2020, and the performance rated current is 12 A max (IRP,40K) with specific PCB copper conditions.

What is the DC resistance (DCR)?

Typical DCR is 8 mΩ, maximum is 11 mΩ (at 20°C).

What is the self-resonant frequency?

The self-resonant frequency is 37.5 MHz typical.

What are the dimensions of the package?

The package is 12.00 mm x 12.00 mm with a maximum height of 8.00 mm. It is a surface mount nonstandard package.

What is the operating temperature range?

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

Is this inductor AEC-Q200 qualified?

Yes, the component is AEC-Q200 Grade 1 qualified, with automotive approval released.

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