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    Ferrite Cores

    Manufacturer Series Packaging Product Status Core Type Supplier Device Package Material Diameter Inductance Factor (Al) Tolerance Gap Effective Permeability (µe) Initial Permeability (µi) Core Factor (ΣI/A) mm⁻¹ Effective Length (le) mm Effective Area (Ae) mm² Minimum Core Cross Section (Amin) mm² Effective Magnetic Volume (Ve) mm³ Finish Height Length Width

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    Photo Mfr. Part # Availability Price Quantity Datasheet Series Packaging Product Status Core Type Supplier Device Package Material Diameter Inductance Factor (Al) Tolerance Gap Effective Permeability (µe) Initial Permeability (µi) Core Factor (ΣI/A) mm⁻¹ Effective Length (le) mm Effective Area (Ae) mm² Minimum Core Cross Section (Amin) mm² Effective Magnetic Volume (Ve) mm³ Finish Height Length Width
    CF139 T5818

    CF139 T5818

    COSMO INDIA TOROIDAL RINGS MN-Z

    Cosmo Ferrites Ltd.

    500
    RFQ
    CF139 T5818

    Datasheet

    - Bulk Active Toroid TX 58 x 41 x 18 - 2.354" (59.80mm) - ±30% Ungapped - - 1.0 152.0 152.0 - 23200.0 Epoxy 0.729" (18.60mm) - -
    50ALL 25-25-25-0000

    50ALL 25-25-25-0000

    I Bar / Block

    Ferrite International

    3,600
    RFQ
    50ALL 25-25-25-0000

    Datasheet

    * Bulk Active I - 50ALL - - ±25% - - - - - - - - Uncoated 1.000" (25.40mm) 1.000" (25.40mm) 1.000" (25.40mm)
    5099 25-25-25-0000

    5099 25-25-25-0000

    I Bar / Block

    Ferrite International

    3,600
    RFQ
    5099 25-25-25-0000

    Datasheet

    * Bulk Active I - 5099 - - ±25% - - - - - - - - Uncoated 1.000" (25.40mm) 1.000" (25.40mm) 1.000" (25.40mm)
    7070 25-25-25-0000

    7070 25-25-25-0000

    I Bar / Block

    Ferrite International

    3,600
    RFQ
    7070 25-25-25-0000

    Datasheet

    * Bulk Active I - 7070 - - ±25% - - - - - - - - Uncoated 1.000" (25.40mm) 1.000" (25.40mm) 1.000" (25.40mm)
    7099 25-25-25-0000

    7099 25-25-25-0000

    I Bar / Block

    Ferrite International

    3,600
    RFQ
    7099 25-25-25-0000

    Datasheet

    * Bulk Active I - 7099 - - ±25% - - - - - - - - Uncoated 1.000" (25.40mm) 1.000" (25.40mm) 1.000" (25.40mm)
    N001 25-25-25-0000

    N001 25-25-25-0000

    I Bar / Block

    Ferrite International

    3,600
    RFQ
    N001 25-25-25-0000

    Datasheet

    * Bulk Active I - N001 - - ±25% - - - - - - - - Uncoated 1.000" (25.40mm) 1.000" (25.40mm) 1.000" (25.40mm)
    7070 81-13-16-0000

    7070 81-13-16-0000

    I Bar / Mate with 81mm UR Core

    Ferrite International

    4,320
    RFQ
    7070 81-13-16-0000

    Datasheet

    * Bulk Active I - 7070 - - ±25% - - - - - - - - Uncoated 0.500" (12.70mm) 3.197" (81.20mm) 0.622" (15.80mm)
    7099 81-13-16-0000

    7099 81-13-16-0000

    I Bar / Mate with 81mm UR core

    Ferrite International

    4,320
    RFQ
    7099 81-13-16-0000

    Datasheet

    * Bulk Active I - 7099 - - ±25% - - - - - - - - Uncoated 0.500" (12.70mm) 3.197" (81.20mm) 0.622" (15.80mm)
    50ALL 81-13-16-0000

    50ALL 81-13-16-0000

    I Bar / Mate with 81mm UR Core

    Ferrite International

    4,320
    RFQ
    50ALL 81-13-16-0000

    Datasheet

    * Bulk Active I - 50ALL - - ±25% - - - - - - - - Uncoated 0.500" (12.70mm) 3.197" (81.20mm) 0.622" (15.80mm)
    CF196 EE6527

    CF196 EE6527

    COSMO INDIA E CORE MN-ZN

    Cosmo Ferrites Ltd.

    500
    RFQ
    CF196 EE6527

    Datasheet

    - Bulk Active E E 65 x 32 x 27 N27 - - - Ungapped - - - - - - - Uncoated 1.291" (32.80mm) 2.559" (65.00mm) 1.079" (27.40mm)
    50ALL 81-42-16-0000

    50ALL 81-42-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    50ALL 81-42-16-0000

    Datasheet

    - Bulk Active UR - 50ALL - - ±25% Ungapped - - - - - - - Uncoated 1.634" (41.50mm) 3.197" (81.20mm) 0.622" (15.80mm)
    7099 81-42-16-0000

    7099 81-42-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    7099 81-42-16-0000

    Datasheet

    - Bulk Active UR - 7099 - - ±25% Ungapped - - - - - - - Uncoated 1.634" (41.50mm) 3.197" (81.20mm) 0.622" (15.80mm)
    7070 81-42-16-0000

    7070 81-42-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    7070 81-42-16-0000

    Datasheet

    - Bulk Active UR - 7070 - - ±25% Ungapped - - - - - - - Uncoated 1.634" (41.50mm) 3.197" (81.20mm) 0.622" (15.80mm)
    CF296 ETD4917

    CF296 ETD4917

    COSMO INDIA E CORE MN-ZN

    Cosmo Ferrites Ltd.

    500
    RFQ
    CF296 ETD4917

    Datasheet

    - Bulk Active E EER 49 PC47 - 6.25 µH ±25% Ungapped - - 0.4 91.3 231.0 - 21100.0 Uncoated 0.748" (19.00mm) 1.929" (49.00mm) 0.677" (17.20mm)
    50ALL 70-54-32-0000

    50ALL 70-54-32-0000

    E-Core

    Ferrite International

    1,728
    RFQ
    50ALL 70-54-32-0000

    Datasheet

    - Bulk Active E - 50ALL - - ±25% Ungapped - - - - - - - Uncoated - 2.756" (70.00mm) 1.248" (31.70mm)
    CF139 PQ4040

    CF139 PQ4040

    COSMO INDIA PQ CORE MN-ZN

    Cosmo Ferrites Ltd.

    500
    RFQ
    CF139 PQ4040

    Datasheet

    - Bulk Active PQ PQ 40 x 40 N87 - 4.3 µH -20%, +30% Ungapped - 2200 0.49 92.5 188.3 - 17430.0 Uncoated 0.783" (19.90mm) 1.594" (40.50mm) 1.102" (28.00mm)
    CF249 EE6420P

    CF249 EE6420P

    COSMO INDIA E CORE MN-ZN

    Cosmo Ferrites Ltd.

    500
    RFQ
    CF249 EE6420P

    Datasheet

    - Bulk Active E E 64 x 10 x 50 3C92 - - - - - - - - - - - Uncoated 0.402" (10.20mm) 2.520" (64.00mm) 2.000" (50.80mm)
    7070 81-45-16-0000

    7070 81-45-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    7070 81-45-16-0000

    Datasheet

    - Bulk Active UR - 7070 - - ±25% Ungapped - - - - - - - Uncoated 1.755" (44.58mm) 3.197" (81.20mm) 0.622" (15.80mm)
    50ALL 81-45-16-0000

    50ALL 81-45-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    50ALL 81-45-16-0000

    Datasheet

    - Bulk Active UR - 50ALL - - ±25% Ungapped - - - - - - - Uncoated 1.755" (44.58mm) 3.197" (81.20mm) 0.622" (15.80mm)
    7099 81-45-16-0000

    7099 81-45-16-0000

    UR 81

    Ferrite International

    1,800
    RFQ
    7099 81-45-16-0000

    Datasheet

    - Bulk Active UR - 7099 - - ±25% Ungapped - - - - - - - Uncoated 1.755" (44.58mm) 3.197" (81.20mm) 0.622" (15.80mm)
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