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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
B66417U0250K187

B66417U0250K187

FERRITE CORE EFD N87

EPCOS - TDK Electronics

782
B66417U0250K187

Datasheet

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

B66302G0000X187

FERRITE CORE E N87 1PC

EPCOS - TDK Electronics

725
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
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
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
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
4077375411

Datasheet

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

B66358G1000X187

FERRITE CORE ETD N87 1PC

EPCOS - TDK Electronics

4,973
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
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
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
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
CMC030020012H

Datasheet

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

5975021921

FERRITE CORE TOROID 6.5UH 75

Fair-Rite Products Corp.

3,778
5975021921

Datasheet

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

0P48020EC

FERRITE CORE E 5.08UH P

Magnetics, a division of Spang & Co.

3,786
0P48020EC

Datasheet

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

B66395G0000X197

FERRITE CORE ETD N97 1PC

EPCOS - TDK Electronics

2,689
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
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
PQ35/35-3F46

Datasheet

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

B65879Q0100K095

FERRITE CORE PQ 100NH N95

EPCOS - TDK Electronics

2,763
B65879Q0100K095

Datasheet

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

B65879Q0150K095

FERRITE CORE PQ 150NH N95

EPCOS - TDK Electronics

2,127
B65879Q0150K095

Datasheet

PQ32/30 Bulk Active PQ PQ 32 x 30 - 150 nH ±10% N95 Distributed Gapped - 3000 0.441 67.8 Uncoated 153.8 10440.0 127.5 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
0077726A7

Datasheet

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

ETD59/31/22-3C95

FERRITE CORE ETD 3C95

Ferroxcube

3,458
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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