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Ferrite Cores & Accessories

Ferrite Cores are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many ferrite core manufacturers including Fair-Rite, Proterial, TDK, & more.
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Please view our selection of ferrite cores below.

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Results: 3,245

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Part #

Ferrite Cores & Accessories E30/15/7 N87OL

B66319GX187
TDK
1: $2.34
3,316In Stock
3,400Expected 21/12/2026

Mfr. Part No.
B66319GX187

Mouser Part No
871-B66319GX187

TDK

Ferrite Cores & Accessories E30/15/7 N87OL

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Datasheet

3,316In Stock

3,400Expected 21/12/2026

$2.34

$1.62

$1.39

$1.28

View

Min.: 1
Mult.: 1

B66319G

Ferrite Cores

Ungapped

E Core

30 x 15 x 7

1.9 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories E42/21/15 N27OL

B66325G0000X127
TDK
1: $6.84
832In Stock

Mfr. Part No.
B66325G0000X127

Mouser Part No
871-B66325GX127

TDK

Ferrite Cores & Accessories E42/21/15 N27OL

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Datasheet

832In Stock

$6.84

$4.68

$3.96

$3.47

View

Min.: 1
Mult.: 1

E10/5.5/5

Ferrite Cores

Ungapped

E Core

42 x 21 x 15

3.5 uH

- 20 %, + 30 %

N27

Bulk

Ferrite Cores & Accessories E42/21/20 N87OL

B66329GX187
TDK
1: $7.37
3,627In Stock

Mfr. Part No.
B66329GX187

Mouser Part No
871-B66329GX187

TDK

Ferrite Cores & Accessories E42/21/20 N87OL

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Datasheet

3,627In Stock

$7.37

$5.03

$4.26

$3.71

View

Min.: 1
Mult.: 1

B66329G

Ferrite Cores

Ungapped

E Core

42 x 21 x 20

5.2 nH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories E55/28/21 N87OL

B66335G0000X187
TDK
1: $7.40
1,403In Stock
1,944Expected 21/9/2026

Mfr. Part No.
B66335G0000X187

Mouser Part No
871-B66335G0000X187

TDK

Ferrite Cores & Accessories E55/28/21 N87OL

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Datasheet

1,403In Stock

1,944Expected 21/9/2026

$7.40

$5.05

$4.27

$3.73

View

Min.: 1
Mult.: 1

E55/28/21

Ferrite Cores

Ungapped

E Core

55 x 28 x 21

6.4 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories E55/28/21 N27OL

B66335G0000X127
TDK
1: $8.28
779In Stock

Mfr. Part No.
B66335G0000X127

Mouser Part No
871-B66335GX127

TDK

Ferrite Cores & Accessories E55/28/21 N27OL

Learn More

Datasheet

779In Stock

$8.28

$5.68

$4.81

$4.23

View

Min.: 1
Mult.: 1

E42/21/20

Ferrite Cores

Ungapped

E Core

55 x 28 x 21

5.8 uH

- 20 %, + 30 %

N27

Bulk

Ferrite Cores & Accessories E55/28/25 N87OL

B66344G0000X187
TDK
1: $9.82
451In Stock

Mfr. Part No.
B66344G0000X187

Mouser Part No
871-B66344G0000X187

TDK

Ferrite Cores & Accessories E55/28/25 N87OL

Learn More

Datasheet

451In Stock

$9.82

$6.73

$5.52

$4.94

View

Min.: 1
Mult.: 1

E55/28/25

Ferrite Cores

Ungapped

E Core

55 x 28 x 25

7.3 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories ETD29/16/10 N87LP 0.5MM

B66358G0500X187
TDK
1: $3.52
5,293In Stock

Mfr. Part No.
B66358G0500X187

Mouser Part No
871-B66358G0500X187

TDK

Ferrite Cores & Accessories ETD29/16/10 N87LP 0.5MM

Learn More

Datasheet

5,293In Stock

$3.52

$2.43

$2.08

$1.84

View

Min.: 1
Mult.: 1

ETD29/16/10

Ferrite Cores

Gapped

ETD Core

29 x 16 x 10

201 nH

N87

Bulk

Ferrite Cores & Accessories ETD29/16/10 N97 2250 +30% -20%

B66358G0000X197
TDK
1: $2.99
2,867In Stock
900Expected 25/9/2026

Mfr. Part No.
B66358G0000X197

Mouser Part No
871-B66358GX197

TDK

Ferrite Cores & Accessories ETD29/16/10 N97 2250 +30% -20%

Learn More

Datasheet

2,867In Stock

900Expected 25/9/2026

$2.99

$2.07

$1.77

$1.56

View

Min.: 1
Mult.: 1

ETD29/16/10

Ferrite Cores

Ungapped

ETD Core

29 x 16 x 10

2.25 uH

- 20 %, + 30 %

N97

Bulk

Ferrite Cores & Accessories E Cores Accessories

B66359S2000X000
TDK
200: $0.317
12,400In Stock
11,000Expected 27/8/2026

Mfr. Part No.
B66359S2000X000

Mouser Part No
871-B66359S2000X000

TDK

Ferrite Cores & Accessories E Cores Accessories

Learn More

Datasheet

12,400In Stock

11,000Expected 27/8/2026

$0.317

$0.277

$0.241

$0.235

Min.: 200
Mult.: 200

ETD29/16/10

Hardware & Accessories

Ungapped

Bulk

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

B66359X1014T001
TDK
1: $3.45
1,534In Stock

Mfr. Part No.
B66359X1014T001

Mouser Part No
871-B66359X1014T001

TDK

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

Learn More

Datasheet

1,534In Stock

$3.45

$2.90

$2.48

$2.18

View

Min.: 1
Mult.: 1

ETD29/16/10

Hardware & Accessories

Ungapped

ETD Core

29 x 16 x 10

14 Pin

Tray

Ferrite Cores & Accessories ETD34/17 11-N87-G1000

B66361G1000X187
TDK
1: $3.74
3,706In Stock

Mfr. Part No.
B66361G1000X187

Mouser Part No
871-B66361G1000X187

TDK

Ferrite Cores & Accessories ETD34/17 11-N87-G1000

Learn More

Datasheet

3,706In Stock

$3.74

$2.58

$2.20

$1.94

View

Min.: 1
Mult.: 1

ETD34/17/11

Ferrite Cores

Gapped

ETD Core

34 x 17 x 11

153 nH

N87

Bulk

Ferrite Cores & Accessories ETD34/17/11 N87OL

B66361GX187
TDK
1: $3.71
7,587In Stock

Mfr. Part No.
B66361GX187

Mouser Part No
871-B66361GX187

TDK

Ferrite Cores & Accessories ETD34/17/11 N87OL

Learn More

Datasheet

7,587In Stock

$3.71

$2.56

$2.19

$1.93

View

Min.: 1
Mult.: 1

B66361G

Ferrite Cores

Ungapped

ETD Core

34 x 17 x 11

2.6 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories CLM-ETD34 2 PCS REQUIRED

B66362A2000X000
TDK
1: $0.558
6,097In Stock

Mfr. Part No.
B66362A2000X000

Mouser Part No
871-B66362A2000X

TDK

Ferrite Cores & Accessories CLM-ETD34 2 PCS REQUIRED

Learn More

Datasheet

6,097In Stock

$0.558

$0.502

$0.483

$0.469

View

Min.: 1
Mult.: 1

ETD34/17/11

Hardware & Accessories

Ungapped

ETD Core

34 x 17 x 11

Bulk

Ferrite Cores & Accessories COIL FORMER VALOX 420 SEO

B66362B1014T001
TDK
1: $2.73
5,905In Stock

Mfr. Part No.
B66362B1014T001

Mouser Part No
871-B66362B1014T001

TDK

Ferrite Cores & Accessories COIL FORMER VALOX 420 SEO

Learn More

Datasheet

5,905In Stock

$2.73

$2.49

$2.38

$2.26

View

Min.: 1
Mult.: 1

ETD34/17/11

Hardware & Accessories

Ungapped

ETD Core

34 x 17 x 11

14 Pin

Tray

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

B66362W1014T001
TDK
1: $3.51
2,291In Stock
1,200Expected 16/2/2027

Mfr. Part No.
B66362W1014T001

Mouser Part No
871-B66362W1014T001

TDK

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

Learn More

Datasheet

2,291In Stock

1,200Expected 16/2/2027

$3.51

$3.17

$2.76

$2.42

View

Min.: 1
Mult.: 1

ETD34/17/11

Hardware & Accessories

Ungapped

ETD Core

34 x 17 x 11

14 Pin

Tray

Ferrite Cores & Accessories COIL FORMER RNITE FR 530

B66362X1014T001
TDK
1: $2.61
2,229In Stock
3,000Expected 9/11/2026

Mfr. Part No.
B66362X1014T001

Mouser Part No
871-B66362X1014T1

TDK

Ferrite Cores & Accessories COIL FORMER RNITE FR 530

Learn More

Datasheet

2,229In Stock

3,000Expected 9/11/2026

$2.61

$2.38

$2.28

$2.22

View

Min.: 1
Mult.: 1

ETD34/17/11

Hardware & Accessories

Ungapped

ETD Core

34 x 17 x 11

14 Pin

Tray

Ferrite Cores & Accessories ETD39/20/13 N87 gap 0.5 mm

B66363G500X187
TDK
1: $5.26
7,427In Stock

Mfr. Part No.
B66363G500X187

Mouser Part No
871-B66363G500X187

TDK

Ferrite Cores & Accessories ETD39/20/13 N87 gap 0.5 mm

Learn More

Datasheet

7,427In Stock

$5.26

$3.62

$3.06

$2.69

View

Min.: 1
Mult.: 1

B66363G

Ferrite Cores

Gapped

ETD Core

39 x 20 x 13

326 nH

N87

Bulk

Ferrite Cores & Accessories ETD39/20/13 N87 2700 +30% -20%

B66363GX187
TDK
1: $5.26
5,996In Stock
4,800Expected 5/10/2026

Mfr. Part No.
B66363GX187

Mouser Part No
871-B66363GX187

TDK

Ferrite Cores & Accessories ETD39/20/13 N87 2700 +30% -20%

Learn More

Datasheet

5,996In Stock

4,800Expected 5/10/2026

$5.26

$3.62

$3.06

$2.69

View

Min.: 1
Mult.: 1

B66363G

Ferrite Cores

Ungapped

ETD Core

39 x 20 x 13

2.7 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories ETD39/20/13 N97OL

B66363G0000X197
TDK
1: $7.00
2,399In Stock

Mfr. Part No.
B66363G0000X197

Mouser Part No
871-B66363GX197

TDK

Ferrite Cores & Accessories ETD39/20/13 N97OL

Learn More

Datasheet

2,399In Stock

$7.00

$4.79

$4.05

$3.55

View

Min.: 1
Mult.: 1

ETD39/20/13

Ferrite Cores

Ungapped

ETD Core

39 x 20 x 13

2.8 uH

- 20 %, + 30 %

N97

Bulk

Ferrite Cores & Accessories COIL FORMER VALOX 420 SEO

B66364B1016T001
TDK
1: $4.18
1,931In Stock
6,000Expected 12/10/2026

Mfr. Part No.
B66364B1016T001

Mouser Part No
871-B66364B1016T001

TDK

Ferrite Cores & Accessories COIL FORMER VALOX 420 SEO

Learn More

Datasheet

1,931In Stock

6,000Expected 12/10/2026

$4.18

$3.48

$3.16

$2.82

View

Min.: 1
Mult.: 1

ETD39/20/13

Hardware & Accessories

Gapped

ETD Core

39 x 20 x 13

16 Pin

Tray

Ferrite Cores & Accessories ETD44/22/15 N87OL

B66365G0000X187
TDK
1: $6.05
1,034In Stock

Mfr. Part No.
B66365G0000X187

Mouser Part No
871-B66365GX187

TDK

Ferrite Cores & Accessories ETD44/22/15 N87OL

Learn More

Datasheet

1,034In Stock

$6.05

$4.15

$3.52

$3.09

View

Min.: 1
Mult.: 1

ETD44/22/15

Ferrite Cores

Ungapped

ETD Core

44 x 22 x 15

2.15 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories ETD49/25 16-N87-G2000

B66367G2000X187
TDK
1: $8.30
952In Stock

Mfr. Part No.
B66367G2000X187

Mouser Part No
871-B66367G2000X187

TDK

Ferrite Cores & Accessories ETD49/25 16-N87-G2000

Learn More

Datasheet

952In Stock

$8.30

$5.64

$4.77

$4.16

View

Min.: 1
Mult.: 1

ETD49/25/16

Ferrite Cores

Gapped

ETD Core

49 x 25 x 16

188 nH

N87

Bulk

Ferrite Cores & Accessories CLM-ETD49 2 PCS REQUIRED

B66368A2000X
TDK
1: $0.816
6,241In Stock
3,000Expected 27/11/2026

Mfr. Part No.
B66368A2000X

Mouser Part No
871-B66368A2000X

TDK

Ferrite Cores & Accessories CLM-ETD49 2 PCS REQUIRED

Learn More

Datasheet

6,241In Stock

3,000Expected 27/11/2026

$0.816

$0.74

$0.70

$0.631

View

Min.: 1
Mult.: 1

B66368A

Hardware & Accessories

Ungapped

ETD Core

49 x 25 x 16

Yoke

Bulk

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

B66368W1020T001
TDK
1: $4.57
1,406In Stock
1,680Expected 4/1/2027

Mfr. Part No.
B66368W1020T001

Mouser Part No
871-B66368W1020T001

TDK

Ferrite Cores & Accessories COIL FORMER RYNITE FR 530

Learn More

Datasheet

1,406In Stock

1,680Expected 4/1/2027

$4.57

$3.28

$2.94

$2.71

View

Min.: 1
Mult.: 1

ETD49/25/16

Hardware & Accessories

Ungapped

ETD Core

49 x 25 x 16

Coil Former with Solder Pins

20 Pin

Tray

Ferrite Cores & Accessories E70/33/32 N87OL

B66371G0000X187
TDK
1: $17.37
1,636In Stock
1,440On Order

Mfr. Part No.
B66371G0000X187

Mouser Part No
871-B66371G0000X187

TDK

Ferrite Cores & Accessories E70/33/32 N87OL

Learn More

Datasheet

1,636In Stock

1,440On Order

$17.37

$12.93

$10.36

$10.34

View

Min.: 1
Mult.: 1

E70/33/32

Ferrite Cores

Ungapped

E Core

70 x 33 x 32

9.7 uH

- 20 %, + 30 %

N87

Bulk

Ferrite Cores & Accessories

Customer Service Office

Company

Resources

Support

26
30
38
40
56
59
61
62
65
66
78
89
90
92
93
94
95
96
98
35N

Accessories
Amorphous Core
Cable Single
Clamp
Coil Former
Coil Former (Bobbins)
Cut Core
Distributed Gap
Double Aperture Core
End Clip
EQ Core
Ferrite Block
Ferrite Blocks
Ferrite Core for Switching Power Supplies
Ferrite Core for Telecommunication
Gapped
I Core
Insulating Washer
Mounting Assembly
Multi-Hole Connector Plate

DE Core
DU Core
EC Core
E Core
EE Core
EER Core
EF Core
EFD Core
EI Core
ELP Core
EM Core
EP Core
EPO Core
EPX Core
EQ Core
ER Core
ER LP Core
ETD Core
EV Core
FEM Core

5.95 mm x 1.65 mm
9.5 mm x 5 mm
9.7 mm x 3.3 mm
11 mm x 6 mm
11.4 mm x 4.6 mm
12.95 mm x 4.9 mm
12.95 mm x 6.6 mm
14 mm x 5 mm
14.5 mm x 6.7 mm
14.6 mm x 6.8 mm
15 mm x 4.65 mm
17.9 mm x 8.2 mm
18 mm x 10 mm
18 mm x 9.7 mm
20 mm x 6.65 mm
21.8 mm x 15.8 mm
22.5 mm x 6.6 mm
23.2 mm x 11 mm
23.2 mm x 12.5 mm
25 mm x 18 mm

2.4 nH
4.75 nH
5.2 nH
16 nH
17 nH
17.5 nH
18 nH
20 nH
21 nH
25 nH
26 nH
32 nH
35 nH
38 nH
39 nH
40 nH
45 nH
49 nH
50 nH
55 nH

0.03 %
0.04 %
0.05 %
0.08 %
0.1 %
0.15 %
0.25 %
- 30 %, + 40 %
- 20 %, + 30 %
2 %
3 %
4 %
5 %
6 %
7 %
8 %
10 %
12 %
15 %
20 %

31
43
44
52
61
67
68
75
77
78
95
96
98
9415
ABS
E130I
E Core
Ferrite
Finemet
GFR Liquid Crystal Polymer