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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
    B66417U0250K187

    B66417U0250K187

    FERRITE CORE EFD N87

    EPCOS - TDK Electronics

    782
    RFQ
    B66417U0250K187

    Datasheet

    EFD20/10/7 Box Active EFD EFD 20 x 10 x 7 N87 - - ±10% Gapped 300.0 2200 1.52 47.0 31.0 31.0 1460.0 Uncoated 0.394" (10.00mm) 0.787" (20.00mm) 0.262" (6.65mm)
    B66302G0000X187

    B66302G0000X187

    FERRITE CORE E N87 1PC

    EPCOS - TDK Electronics

    725
    RFQ
    B66302G0000X187

    Datasheet

    E8.8/4/2 Box Active E E 8 x 8 N87 - - - Ungapped - - - - - - - Uncoated 0.161" (4.10mm) 0.354" (9.00mm) 0.079" (2.00mm)
    EFD25/13/9-3F46

    EFD25/13/9-3F46

    FERRITE CORE EFD 3F46

    Ferroxcube

    704
    RFQ
    EFD25/13/9-3F46

    Datasheet

    - Bulk Active EFD EFD 25 x 13 x 9 3F46 - - - - - - - - - - - Uncoated 0.492" (12.50mm) 0.984" (25.00mm) 0.358" (9.10mm)
    B66311G0250X187

    B66311G0250X187

    FERRITE CORE E N87 1PC

    EPCOS - TDK Electronics

    460
    RFQ
    B66311G0250X187

    Datasheet

    E20/10/6 Tray Active E E 20 x 10 x 6 N87 - - - Gapped - - - - - - - Uncoated 0.394" (10.00mm) 0.803" (20.40mm) 0.232" (5.90mm)
    EFD25/13/9-3F36

    EFD25/13/9-3F36

    FERRITE CORE EFD 3F36

    Ferroxcube

    2,060
    RFQ
    EFD25/13/9-3F36

    Datasheet

    - Bulk Active EFD EFD 25 x 13 x 9 3F36 - - - - - - - - - - - Uncoated 0.492" (12.50mm) 0.984" (25.00mm) 0.358" (9.10mm)
    4077375411

    4077375411

    FERRITE CORE ROD 77

    Fair-Rite Products Corp.

    4,396
    RFQ
    4077375411

    Datasheet

    - Bulk Active ROD - 77 0.374" (9.50mm) - - Ungapped 29.0 2000 - 25.0 7.07 - - Uncoated - 1.625" (41.28mm) -
    B66358G1000X187

    B66358G1000X187

    FERRITE CORE ETD N87 1PC

    EPCOS - TDK Electronics

    4,973
    RFQ
    B66358G1000X187

    Datasheet

    ETD29/16/10 Box Active ETD ETD 29 x 16 x 10 N87 - - - Gapped - - - - - - - Uncoated 0.630" (16.00mm) 1.205" (30.60mm) 0.386" (9.80mm)
    B66329G0000X187

    B66329G0000X187

    FERRITE CORE E N87 1PC

    EPCOS - TDK Electronics

    4,979
    RFQ
    B66329G0000X187

    Datasheet

    E42/21/20 Box Active E E 42 x 21 x 20 N87 - - - Ungapped - - - - - - - Uncoated 0.835" (21.20mm) 1.654" (42.00mm) 0.787" (20.00mm)
    E38/8/25-3F36

    E38/8/25-3F36

    FERRITE CORE E 3F36

    Ferroxcube

    4,628
    RFQ
    E38/8/25-3F36

    Datasheet

    - Bulk Active E E 38 x 8 x 25 3F36 - - - - - - - - - - - Uncoated 0.325" (8.26mm) 1.500" (38.10mm) 1.000" (25.40mm)
    B66365G0000X197

    B66365G0000X197

    FERRITE CORE ETD N97 1PC

    EPCOS - TDK Electronics

    1,295
    RFQ
    B66365G0000X197

    Datasheet

    ETD44/22/15 Box Active ETD ETD 44 x 22 x 15 N97 - - - Ungapped - - - - - - - Uncoated 0.886" (22.50mm) 1.724" (43.80mm) 0.598" (15.20mm)
    CMC030020012H

    CMC030020012H

    NANOCRYSTALLINE CORE TOROID 55UH

    Magnetics, a division of Spang & Co.

    4,817
    RFQ
    CMC030020012H

    Datasheet

    - Bulk Active Toroid - Nanocrystalline 1.181" (30.00mm) 55 µH ±30% Ungapped - 80000 - 79.0 49.0 - - Polyester 0.472" (12.00mm) - -
    5975021921

    5975021921

    FERRITE CORE TOROID 6.5UH 75

    Fair-Rite Products Corp.

    3,778
    RFQ
    5975021921

    Datasheet

    - Bulk Active Toroid - 75 1.984" (50.40mm) 6.5 µH -30%, +25% Ungapped - 5000 1.059 127.0 120.0 - 15300.0 Plastic 0.663" (16.85mm) - -
    0P48020EC

    0P48020EC

    FERRITE CORE E 5.08UH P

    Magnetics, a division of Spang & Co.

    3,786
    RFQ
    0P48020EC

    Datasheet

    - Bulk Active E - P - 5.08 µH - Ungapped - 2500 - 184.0 392.0 392.0 72300.0 Uncoated 1.500" (38.10mm) 3.150" (80.00mm) 0.780" (19.80mm)
    B66395G0000X197

    B66395G0000X197

    FERRITE CORE ETD N97 1PC

    EPCOS - TDK Electronics

    2,689
    RFQ
    B66395G0000X197

    Datasheet

    ETD54/28/19 Box Active ETD ETD 54 x 28 x 19 N97 - - - Ungapped - - - - - - - Uncoated 1.094" (27.80mm) 2.156" (54.50mm) 0.760" (19.30mm)
    RM12/I-3C95

    RM12/I-3C95

    FERRITE CORE RM 3C95 2PC SET

    Ferroxcube

    1,358
    RFQ
    RM12/I-3C95

    Datasheet

    - Bulk Active RM RM 12 3C95 - - - - - - - - - - - Uncoated 0.965" (24.50mm) 1.472" (37.40mm) 0.634" (16.10mm)
    PQ35/35-3F46

    PQ35/35-3F46

    FERRITE CORE PQ 3F46 2PC SET

    Ferroxcube

    4,118
    RFQ
    PQ35/35-3F46

    Datasheet

    - Bulk Active PQ PQ 35 x 35 3F46 - - ±25% Ungapped - - 0.454 86.1 190.0 162.0 16300.0 Uncoated 1.366" (34.70mm) 1.421" (36.10mm) 1.024" (26.00mm)
    B65879Q0100K095

    B65879Q0100K095

    FERRITE CORE PQ 100NH N95

    EPCOS - TDK Electronics

    2,763
    RFQ
    B65879Q0100K095

    Datasheet

    PQ32/30 Bulk Active PQ PQ 32 x 30 N95 - 100 nH ±10% Distributed Gapped - 3000 0.441 67.8 153.8 127.5 10440.0 Uncoated 0.597" (15.17mm) 1.260" (32.00mm) 0.866" (22.00mm)
    B65879Q0150K095

    B65879Q0150K095

    FERRITE CORE PQ 150NH N95

    EPCOS - TDK Electronics

    2,127
    RFQ
    B65879Q0150K095

    Datasheet

    PQ32/30 Bulk Active PQ PQ 32 x 30 N95 - 150 nH ±10% Distributed Gapped - 3000 0.441 67.8 153.8 127.5 10440.0 Uncoated 0.597" (15.17mm) 1.260" (32.00mm) 0.866" (22.00mm)
    0077726A7

    0077726A7

    FERRITE CORE TOROID 175NH KOOLMU

    Magnetics, a division of Spang & Co.

    4,625
    RFQ
    0077726A7

    Datasheet

    - Bulk Active Toroid - Kool Mu 2.028" (51.51mm) 175 nH ±8% Ungapped - 60 - 113.5 262.0 - 29700.0 Coated 0.850" (21.59mm) - -
    ETD59/31/22-3C95

    ETD59/31/22-3C95

    FERRITE CORE ETD 3C95

    Ferroxcube

    3,458
    RFQ
    ETD59/31/22-3C95

    Datasheet

    - Bulk Active ETD ETD 59 x 31 x 22 3C95 - - - - - - - - - - - Uncoated 1.220" (31.00mm) 2.354" (59.80mm) 0.852" (21.65mm)
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