Planar EE and EI Cores

Fair-Rite Planar EE and EI Cores, with their low profile, are suitable for board-level installation allowing assembly without the need for plastic coilformers and can also allow windings integrated into multi-level PCB's. Planar ER Cores, with their low mass and low profile, are suitable for surface mount installations in power filter and transformer applications. Planar Cores can be supplied with the center post gaped to mechanical specifications as well as an AL value. Planar Cores are available in a range of sizes from EE14/7 to EE64/21, EI14/5 to EI64/15, and ER9.5 to ER14.5. They are available in 3 materials with Initial Permeability ranging from 2300 to 3000.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Type
Core
Core Size
Inductance
Tolerance
Core Material
Packaging
Fair-Rite Ferrite Cores & Accessories 78 PlanarEI Core Set Ind 1440 nH 25% TOL
Product Comments
2,883In Stock
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 14 x 3.5 x 5 1.44 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 95 PlanarEI Core Set Ind 22200 nH 25% TO
Product Comments
127In Stock
90Expected 2026-02-09
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 64 x 51 x 10.35 22.2 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 78 PlanarEI Core Set Ind 5400 nH 25% TOL
Product Comments
629In Stock
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 21.8 x 15.8 x 5.7 5.4 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 95 PlanarEI Core Set Ind 8700 nH 25% TOL
Product Comments
581In Stock
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 31.75 x 20.32 x 6.35 8.7 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 98 PlanarEI Core Set Ind 1440 nH 25% TOL
Product Comments
2,170In Stock
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 14 x 5 x 3.5 1.44 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 4500 nH 25% TOL
Product Comments
849In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 21.8 x 15.8 x 5.7 4.5 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 95 Planar EE Core Ind 3300 nH 25% TOL
Product Comments
1,461In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 18 x 4 x 10 3.3 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 98 Planar EE Core Ind 2700 nH 25% TOL
Product Comments
1,170In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 18 x 4 x 10 2.7 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 78 PlanarEI Core Set Ind 7200 nH 25% TOL
Product Comments
532In Stock
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 31.75 x 20.32 x 6.35 7.2 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 6200 nH 25% TOL
Product Comments
440In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 31.75 x 20.32 x 6.35 6.2 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 8200 nH 25% TOL
Product Comments
270In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 38.1 x 25.4 x 8.25 8.2 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 7300 nH 25% TOL
Product Comments
56In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 43.2 x 27.9 x 9.55 7.3 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 95 Planar EE Core Ind 7600 nH 25% TOL
Product Comments
94In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 31.75 x 20.32 x 6.35 7.6 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 95 Planar EE Core Ind 10100 nH 25% TOL
Product Comments
51In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 38.1 x 25.4 x 8.25 10.1 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 95 Planar EE Core Ind 8700 nH 25% TOL
Product Comments
113In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 43.2 x 27.9 x 9.55 9.5 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 98 Planar EE Core Ind 1100 nH 25% TOL
Product Comments
2,155In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 14 x 3.5 x 5 1.1 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 98 Planar EE Core Ind 6400 nH 25% TOL
Product Comments
371In Stock
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 31.75 x 6.35 x 20.35 6.4 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 95 PlanarEI Core Set Ind 6200 nH 25% TOL
Product Comments
1,256Expected 2026-03-16
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 21.8 x 15.8 x 5.7 6.2 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 78 PlanarEI Core Set Ind 16900 nH 25% TOL
Product Comments
N/A
Min.: 1
Mult.: 1

78 Ferrite Cores Ungapped EI Core 64 x 51 x 10.35 16.9 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 95 PlanarEI Core Set Ind 1600 nH 25% TOL
Product Comments
Non-Stocked
Min.: 8,500
Mult.: 8,500

78 Ferrite Cores Ungapped EI Core 14 x 5 x 3.5 1.6 uH 25 % 95 Bulk
Fair-Rite Ferrite Cores & Accessories 98 PlanarEI Core Set Ind 5500 nH 25% TOL
Product Comments
Non-Stocked Lead-Time 20 Weeks
Min.: 1,260
Mult.: 1,260

78 Ferrite Cores Ungapped EI Core 21.8 x 15.8 x 5.7 5.5 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 98 PlanarEI Core Set Ind 7300 nH 25% TOL
Product Comments
Non-Stocked Lead-Time 20 Weeks
Min.: 1,008
Mult.: 1,008

78 Ferrite Cores Ungapped EI Core 7.3 uH 25 % 98 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 2600 nH 25% TOL
Product Comments
Lead-Time 20 Weeks
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 18 x 10 x 4 2.6 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 78 Planar EE Core Ind 14200 nH 25% TOL
Product Comments
Non-Stocked
Min.: 240
Mult.: 30

94 Ferrite Cores Ungapped E Core 64 x 51 x 10.35 14.8 uH 25 % 78 Bulk
Fair-Rite Ferrite Cores & Accessories 98 Planar EE Core Ind 4600 nH 25% TOL
Product Comments
Lead-Time 20 Weeks
Min.: 1
Mult.: 1

94 Ferrite Cores Ungapped E Core 21.8 x 5.7 x 15.8 4.6 uH 25 % 98 Bulk