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Ferrite Cores

Manufacturer Series Packaging Part Status Core Type Supplier Device Package Diameter Inductance Factor (Al) Tolerance Material Gap Effective Permeability (µe) Initial Permeability (µi) Core Factor (ΣI/A) mm⁻¹ Effective Length (le) mm Finish Effective Area (Ae) mm² Effective Magnetic Volume (Ve) mm³ Minimum Core Cross Section (Amin) mm² Height Length 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Photo Mfr. Part # Availability Price Quantity Datasheet Series Packaging Part Status Core Type Supplier Device Package Diameter Inductance Factor (Al) Tolerance Material Gap Effective Permeability (µe) Initial Permeability (µi) Core Factor (ΣI/A) mm⁻¹ Effective Length (le) mm Finish Effective Area (Ae) mm² Effective Magnetic Volume (Ve) mm³ Minimum Core Cross Section (Amin) mm² Height Length Width
0077894A7HT15

0077894A7HT15

FERRITE CORE TOROID 94NH KOOL MU

Magnetics, a division of Spang & Co.

936
0077894A7HT15

Datasheet

- Bulk Active Toroid - 1.090" (27.69mm) 94 nH ±8% Kool Mu Ungapped - 60 - 63.5 Coated 82.1 5210.0 - 0.591" (15.00mm) - -
C055270A2

C055270A2

FERRITE CORE TOROID 103NH MPP

Magnetics, a division of Spang & Co.

695
C055270A2

Datasheet

- Bulk Active Toroid - 0.260" (6.60mm) 103 nH ±8% MPP Ungapped - 125 - 13.6 Coated 9.2 125.0 - 0.188" (4.78mm) - -
0059120A2

0059120A2

FERRITE CORE TOROID 72NH EDGE

Magnetics, a division of Spang & Co.

1,672
0059120A2

Datasheet

- Bulk Active Toroid - 0.653" (16.59mm) 72 nH ±8% Edge Ungapped - 125 - 41.2 Coated 19.2 791.0 - 0.250" (6.35mm) - -
NR42819UG

NR42819UG

RM DESIGN SCP

Magnetics, a division of Spang & Co.

840
NR42819UG

Datasheet

- Bulk Active RM - - 4.047 µH - R Ungapped - 2300 - 44.6 Uncoated 96.6 4310.0 89.1 0.366" (9.30mm) 1.122" (28.50mm) 0.531" (13.50mm)
FR44310IC

FR44310IC

I-CORE - FLAT BACKS

Magnetics, a division of Spang & Co.

713
FR44310IC

Datasheet

- Bulk Active Planar E/I - - 9.541 µH - R Ungapped - 2300 - 50.4 Uncoated 229.0 11500.0 229.0 0.161" (4.10mm) 1.701" (43.20mm) 1.098" (27.90mm)
ZW42908TC

ZW42908TC

FERRITE CORE TOROID 6.34UH W

Magnetics, a division of Spang & Co.

630
ZW42908TC

Datasheet

- Bulk Active Toroid - 1.187" (30.15mm) 6.34 µH ±30% W Ungapped - 10000 - 73.2 Epoxy 36.0 2632.0 - 0.321" (8.15mm) - -
ZJ42908TC

ZJ42908TC

FERRITE CORE TOROID 3.17UH

Magnetics, a division of Spang & Co.

570
ZJ42908TC

Datasheet

- Bulk Active Toroid - 1.177" (29.90mm) 3.17 µH ±20% - Ungapped - 5000 - 73.2 Epoxy 36.0 3170.0 - 0.317" (8.05mm) - -
B65807J0400J087

B65807J0400J087

FERRITE CORE RM N87

EPCOS - TDK Electronics

1,749
B65807J0400J087

Datasheet

RM6 Box Active RM RM 6 - - - N87 Gapped - 2200 0.78 28.6 Uncoated 36.6 1050.0 31.0 0.246" (6.25mm) 0.701" (17.90mm) 0.323" (8.20mm)
5677261621

5677261621

FERRITE

Fair-Rite Products Corp.

461
5677261621

Datasheet

- Bulk Active P - 1.004" (25.50mm) 3.525 µH - 77 Gapped - 2000 0.4 37.6 Uncoated 93.0 3460.0 76.0 0.317" (8.05mm) - -
B65807J0315A087

B65807J0315A087

FERRITE CORE RM N87

EPCOS - TDK Electronics

1,762
B65807J0315A087

Datasheet

RM6 Box Active RM RM 6 - - - N87 Gapped - 2200 0.78 28.6 Uncoated 36.6 1050.0 31.0 0.246" (6.25mm) 0.701" (17.90mm) 0.323" (8.20mm)
0079351A7

0079351A7

FERRITE CORE TOROID 51NH KOOL MU

Magnetics, a division of Spang & Co.

557
0079351A7

Datasheet

- Bulk Active Toroid - 0.928" (23.57mm) 51 nH ±8% Kool Mu MAX Ungapped - 60 - 58.8 Coated 38.8 2280.0 - 0.350" (8.90mm) - -
0077550A7

0077550A7

FERRITE CORE TOROID 28NH KOOL MU

Magnetics, a division of Spang & Co.

160
0077550A7

Datasheet

- Bulk Active Toroid - 1.325" (33.66mm) 28 nH ±8% Kool Mu Ungapped - 26 - 81.4 Coated 65.6 5340.0 - 0.450" (11.45mm) - -
0P45224EC

0P45224EC

FERRITE CORE EC 4.2UH P

Magnetics, a division of Spang & Co.

969
0P45224EC

Datasheet

- Bulk Active EC - - 4.2 µH - P Ungapped - 2500 - 105.0 Uncoated 180.0 18800.0 141.0 0.953" (24.20mm) 2.055" (52.20mm) 0.528" (13.40mm)
0076351A7

0076351A7

FERRITE CORE TOROID 51NH KOOL MU

Magnetics, a division of Spang & Co.

341
0076351A7

Datasheet

- Bulk Active Toroid - 0.958" (24.33mm) 51 nH ±8% Kool Mu HF Ungapped - 60 - 58.8 Coated 38.8 2280.0 - 0.380" (9.65mm) - -
B66329G0250X127

B66329G0250X127

FERRITE CORE E N27 1PC

EPCOS - TDK Electronics

354
B66329G0250X127

Datasheet

E42/21/20 Box Active E E 42 x 21 x 20 - - - N27 Gapped - - - - Uncoated - - - 0.835" (21.20mm) 1.654" (42.00mm) 0.787" (20.00mm)
9478205002

9478205002

FERRITE CORE E 78 SET

Fair-Rite Products Corp.

131
9478205002

Datasheet

- Bulk Active E - - - ±25% 78 Ungapped - 2300 30.0 52.9 Uncoated 190.0 10100.0 180.0 0.325" (8.26mm) 1.500" (38.10mm) 1.000" (25.40mm)
C058121A2

C058121A2

FERRITE CORE TOROID 35NH HIGH FL

Magnetics, a division of Spang & Co.

494
C058121A2

Datasheet

- Bulk Active Toroid - 0.680" (17.27mm) 35 nH ±8% High Flux Ungapped - 60 - 41.2 Coated 19.2 791.0 - 0.280" (7.11mm) - -
C058270A2

C058270A2

FERRITE CORE TOROID 103NH HI FLX

Magnetics, a division of Spang & Co.

2,260
C058270A2

Datasheet

- Bulk Active Toroid - 0.285" (7.24mm) 103 nH ±8% High Flux Ungapped - 125 - 13.6 Coated 9.2 125.0 - 0.213" (5.40mm) - -
0059848A2

0059848A2

FERRITE CORE TOROID 32NH EDGE

Magnetics, a division of Spang & Co.

658
0059848A2

Datasheet

- Bulk Active Toroid - 0.830" (21.08mm) 32 nH - Edge Ungapped - 60 - 50.9 Coated 22.1 1120.0 - 0.280" (7.11mm) - -
B65811J0100A087

B65811J0100A087

FERRITE CORE RM

EPCOS - TDK Electronics

380
B65811J0100A087

Datasheet

RM8 Box Active RM - - - - - Gapped - - - - Uncoated - - - - - -
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