Ole Wolff Elektronik A/S, Roedengvej 14, 4180 Soroe
sales@owolff.com, T: +45 5783 3830
13-12-2025

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    OWINRd_product
    Description
    SMD semi-shielded power inductor
    Features
    • Magnetic resin shielded construction reduces buzz noise to ultra-low levels
    • Metallization on ferrite core results in excellent shock resistance and damage-free durability
    • 30% higher current rating than conventional inductors of equal size
    • Takes up less PCB real estate and saves power
    • RoHS, Halogen Free and REACH Compliant
    Applications
    • Flat-screen TVs, blue-ray disc recorders, set top boxes
    • Cameras and smart phones
    • Portable gaming devices, GPS, multimedia devices, Telecom base stations, VR/AR-glasses
    • DC/DC power line
    General Specifictations
    Test Voltage1.0V
    Parameters Test Temp20°C
    Operation Temp
    (Including temperature Rise)    		-40 to +125°C
    Storage Temp0 to 40°C
    Storage Humidity
    Resistance to Soldering Heat260° for 10 sec
    Rated CurrentL drops off 30% typ at Isat
    Temperature Rise40° typ. at Irms

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    OWINR4018-

    Semi-shielded Power inductors
    Inductance
    Ltol.
    Test freq.
    DCR [mΩ]
    Isat [A]
    Irms [A]
    Irated [mA]
    Idc max [mA]
    Q (min)
    SRF[MHz]
    Inductors:
    L tol note:
    When ordering please specify tolerance code Tolerance: K=±10%, M=±20%, N=±30%
    Shape and dimensions [mm]
    A
    B
    C
    D
    E
    F
    G
    H
    I
    J
    Shape
    A:
    4.00
    A tol:
    ±0.2
    B:
    4.00
    B tol:
    ±0.2
    C:
    1.80
    C tol:
    Max
    D:
    1.20
    D tol:
    Ref
    E:
    3.50
    E tol:
    Ref
    F:
    1.60
    F tol:
    Ref
    G:
    G tol:
    H:
    3.80
    H tol:
    Ref
    I:
    1.60
    I tol:
    Ref
    J:
    1.30
    J tol:
    Ref
    Shape:
    Square
    Dimension remarks:
    Recommended dimension H, I, J for PCB pad
    Dimensions Image:
    OWINRd_dimensions
    PAD Image:
    OWINRd_pad
    Schematic Image:
    OWINRd_schem
    click images to enlarge