Transformer Cores

Some transformers feature ferrite cores, which act as a means to transfer magnetic flux within the transformer. While less common than laminated iron cores, ferrite cores allow for superior performance.

How transformer ferrite cores work

These devices are commonly parts of switched-mode power supplies. The ferrite in the core is in powdered form, which allows the transform...

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EPCOS N87 ER 9.5/5 Transformer Ferrite Core, 800 nH, For Use With Power TransFormers
EPCOS N87 ER 9.5/5 Transformer Ferrite Core, 800 nH, For Use With Power TransFormers
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RS Stock No.: 125-3331Brand: EPCOSManufacturers Part No.: B65523J0000R087

€ 19.69

€ 0.787 Each (In a Pack of 25) (Exc. Vat)

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ER 9.5/5
Power TransFormers
Planar
800nH
N87
155°C
B65523
5mm
9.5mm
IEC 62317-9
5 mm
EPCOS N87 E 20/10/6 Transformer Ferrite Core, 171 nH, For Use With Power TransFormers
EPCOS N87 E 20/10/6 Transformer Ferrite Core, 171 nH, For Use With Power TransFormers
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RS Stock No.: 125-3652Brand: EPCOSManufacturers Part No.: B66311G0250X187

€ 17.46

€ 0.873 Each (In a Pack of 20) (Exc. Vat)

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E 20/10/6
Power TransFormers
Type E
171nH
N87
155°C
B66311
10.1mm
20.4mm
IEC 61246
5.9 mm
EPCOS N27 E 13/7/4 Transformer Ferrite Core, 800 nH, For Use With Power TransFormers, Miniature TransFormers
EPCOS N27 E 13/7/4 Transformer Ferrite Core, 800 nH, For Use With Power TransFormers, Miniature TransFormers
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RS Stock No.: 125-3640Brand: EPCOSManufacturers Part No.: B66305G0000X127

€ 14.01

€ 0.28 Each (In a Pack of 50) (Exc. Vat)

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E 13/7/4
Power TransFormers, Miniature TransFormers
Type E
800nH
N27
155°C
B66305
6.5mm
12.6mm
IEC 61246
3.7 mm
EPCOS N87 EFD 15/8/5 Transformer Ferrite Core, 100 nH, For Use With Power TransFormers, DC/DC Converter, Flat
EPCOS N87 EFD 15/8/5 Transformer Ferrite Core, 100 nH, For Use With Power TransFormers, DC/DC Converter, Flat
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RS Stock No.: 125-3689Brand: EPCOSManufacturers Part No.: B66413U0100K187

€ 13.37

€ 0.668 Each (In a Pack of 20) (Exc. Vat)

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EFD 15/8/5
Power TransFormers, DC/DC Converter, Flat TransFormers
-
100nH
N87
180°C
B66413
7.5mm
15mm
IEC 61185
4.85 mm
EPCOS N87 E 30/15/7 Transformer Ferrite Core, 1900 nH, For Use With Power TransFormers
EPCOS N87 E 30/15/7 Transformer Ferrite Core, 1900 nH, For Use With Power TransFormers
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RS Stock No.: 125-3658Brand: EPCOSManufacturers Part No.: B66319G0000X187

€ 19.29

€ 0.965 Each (In a Pack of 20) (Exc. Vat)

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E 30/15/7
Power TransFormers
-
1900nH
N87
155°C
B66319
15.2mm
30mm
No
7.3 mm
EPCOS T38 RM 6 Transformer Ferrite Core, 8600 nH, For Use With Broadband TransFormers
EPCOS T38 RM 6 Transformer Ferrite Core, 8600 nH, For Use With Broadband TransFormers
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RS Stock No.: 125-3378Brand: EPCOSManufacturers Part No.: B65807J0000Y038

€ 20.15

€ 4.03 Each (In a Pack of 5) (Exc. Vat)

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RM 6
Broadband TransFormers
Core without Centre Hole
8600nH
T38
155°C
B65807
12.5mm
17.9mm
IEC 62317-4
14.7 mm
EPCOS N87 ELP 32/6/20 Transformer Ferrite Core, 5700 nH, For Use With Power TransFormers
EPCOS N87 ELP 32/6/20 Transformer Ferrite Core, 5700 nH, For Use With Power TransFormers
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RS Stock No.: 125-3629Brand: EPCOSManufacturers Part No.: B66287G0000X187

€ 28.52

€ 2.852 Each (In a Pack of 10) (Exc. Vat)

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ELP 32/6/20
Power TransFormers
EELP 32
5700nH
N87
-
ELP
6.35mm
31.75mm
IEC 62317-9
20.35 mm
EPCOS N30 P 18/11 Transformer Ferrite Core, 5900 nH, For Use With Broadband TransFormers
EPCOS N30 P 18/11 Transformer Ferrite Core, 5900 nH, For Use With Broadband TransFormers
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RS Stock No.: 125-3350Brand: EPCOSManufacturers Part No.: B65651W0000R030

€ 22.01

€ 4.402 Each (In a Pack of 5) (Exc. Vat)

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P 18/11
Broadband TransFormers
Ferrite
5900nH
N30
155°C
B65651
10.6mm
10.6mm
IEC 60133
18.4 mm
EPCOS N27 E 25/13/7 Transformer Ferrite Core, 1750 nH, For Use With Power TransFormers
EPCOS N27 E 25/13/7 Transformer Ferrite Core, 1750 nH, For Use With Power TransFormers
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RS Stock No.: 125-3653Brand: EPCOSManufacturers Part No.: B66317G0000X127

€ 12.47

€ 0.624 Each (In a Pack of 20) (Exc. Vat)

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E 25/13/7
Power TransFormers
Type E
1750nH
N27
155°C
B66317
12.8mm
25mm
IEC 61246
7.5 mm
EPCOS N87 EFD 25 Transformer Ferrite Core, 2000 nH, For Use With DC DC Converter
EPCOS N87 EFD 25 Transformer Ferrite Core, 2000 nH, For Use With DC DC Converter
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Also available in industry standard packaging
RS Stock No.: 483-3618Brand: EPCOSManufacturers Part No.: B66421G0000X187

€ 8.99

€ 1.798 Each (In a Pack of 5) (Exc. Vat)

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EFD 25
DC DC Converter
-
2000nH
N87
180°C
B66421
9.1mm
25mm
No
12.5 mm
EPCOS N87 E 13/7/4 Transformer Ferrite Core, 850 nH, For Use With Miniature TransFormers, Power TransFormers
EPCOS N87 E 13/7/4 Transformer Ferrite Core, 850 nH, For Use With Miniature TransFormers, Power TransFormers
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RS Stock No.: 125-3641Brand: EPCOSManufacturers Part No.: B66305G0000X187

€ 22.20

€ 0.444 Each (In a Pack of 50) (Exc. Vat)

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E 13/7/4
Miniature TransFormers, Power TransFormers
Type E
850nH
N87
155°C
B66305
6.5mm
12.6mm
IEC 61246
3.7 mm
EPCOS N87 ETD 39/20/13 Transformer Ferrite Core, 2700 nH, For Use With Power TransFormers, SMPS transformers
EPCOS N87 ETD 39/20/13 Transformer Ferrite Core, 2700 nH, For Use With Power TransFormers, SMPS transformers
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RS Stock No.: 125-3673Brand: EPCOSManufacturers Part No.: B66363G0000X187

€ 13.33

€ 2.666 Each (In a Pack of 5) (Exc. Vat)

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ETD 39/20/13
Power TransFormers, SMPS transformers
-
2700nH
N87
155°C
B66363
20mm
38.9mm
IEC 61185
12.8 mm
EPCOS N87 EFD 30 Transformer Ferrite Core, 160 nH, For Use With DC DC Converter
EPCOS N87 EFD 30 Transformer Ferrite Core, 160 nH, For Use With DC DC Converter
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Also available in industry standard packaging
RS Stock No.: 647-9610Brand: EPCOSManufacturers Part No.: B66423U0160K187

€ 2.85

€ 1.426 Each (In a Pack of 2) (Exc. Vat)

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EFD 30
DC DC Converter
-
160nH
N87
180°C
B66423
9.1mm
30mm
No
15 mm
EPCOS N87 ELP Transformer Ferrite Core, 2600 nH, For Use With Power TransFormers
EPCOS N87 ELP Transformer Ferrite Core, 2600 nH, For Use With Power TransFormers
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RS Stock No.: 125-3625Brand: EPCOSManufacturers Part No.: B66283G0000X187

€ 11.43

€ 1.143 Each (In a Pack of 10) (Exc. Vat)

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ELP
Power TransFormers
EELP18
2600nH
N87
100°C
ELP
4mm
18mm
IEC 62317-9
10 mm
EPCOS N87 EP 20 Transformer Ferrite Core, 4000 nH, For Use With Power TransFormers
EPCOS N87 EP 20 Transformer Ferrite Core, 4000 nH, For Use With Power TransFormers
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RS Stock No.: 125-3416Brand: EPCOSManufacturers Part No.: B65847A0000R087

€ 10.66

€ 5.332 Each (In a Pack of 2) (Exc. Vat)

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2

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EP 20
Power TransFormers
EP 20
4000nH
N87
155°C
B65847
21.6mm
24.5mm
IEC 61596
15.3 mm
EPCOS N97 EFD 25/13/9 Transformer Ferrite Core, 2100 nH, For Use With Flat TransFormers, Power TransFormers, DC/DC
EPCOS N97 EFD 25/13/9 Transformer Ferrite Core, 2100 nH, For Use With Flat TransFormers, Power TransFormers, DC/DC
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RS Stock No.: 125-3696Brand: EPCOSManufacturers Part No.: B66421G0000X197

€ 21.72

€ 1.086 Each (In a Pack of 20) (Exc. Vat)

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20

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20€ 1.086
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EFD 25/13/9
Flat TransFormers, Power TransFormers, DC/DC Converter
-
2100nH
N97
180°C
B66421
12.5mm
25mm
No
9.1 mm
EPCOS N87 E 25/13/7 Transformer Ferrite Core, 1850 nH, For Use With Power TransFormers
EPCOS N87 E 25/13/7 Transformer Ferrite Core, 1850 nH, For Use With Power TransFormers
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RS Stock No.: 125-3654Brand: EPCOSManufacturers Part No.: B66317G0000X187

€ 13.84

€ 0.692 Each (In a Pack of 20) (Exc. Vat)

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E 25/13/7
Power TransFormers
Type E
1850nH
N87
155°C
B66317
12.8mm
25mm
IEC 61246
7.5 mm
EPCOS N87 RM 5 Transformer Ferrite Core, 2000 nH, For Use With Power TransFormers
EPCOS N87 RM 5 Transformer Ferrite Core, 2000 nH, For Use With Power TransFormers
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RS Stock No.: 125-3368Brand: EPCOSManufacturers Part No.: B65805J0000R087

€ 15.81

€ 3.162 Each (In a Pack of 5) (Exc. Vat)

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RM 5
Power TransFormers
Ferrite
2000nH
N87
155°C
B65805
10.5mm
14.6mm
IEC 62317-4
12.3 mm
EPCOS N87 EFD 15/8/5 Transformer Ferrite Core, 780 nH, For Use With DC/DC Converter, Power TransFormers, Flat
EPCOS N87 EFD 15/8/5 Transformer Ferrite Core, 780 nH, For Use With DC/DC Converter, Power TransFormers, Flat
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RS Stock No.: 125-3687Brand: EPCOSManufacturers Part No.: B66413G0000X187

€ 12.52

€ 0.626 Each (In a Pack of 20) (Exc. Vat)

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EFD 15/8/5
DC/DC Converter, Power TransFormers, Flat TransFormers
-
780nH
N87
180°C
B66413
7.5mm
15mm
IEC 61185
4.85 mm
EPCOS N48 P 18/11 Transformer Ferrite Core, 400 nH, For Use With Resonant Circuit Inductors
EPCOS N48 P 18/11 Transformer Ferrite Core, 400 nH, For Use With Resonant Circuit Inductors
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RS Stock No.: 125-3349Brand: EPCOSManufacturers Part No.: B65651T0400A048

€ 8.06

€ 4.03 Each (In a Pack of 2) (Exc. Vat)

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2€ 4.03
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P 18/11
Resonant Circuit Inductors
-
400nH
N48
-
-
10.6mm
-
No
18.4 mm

...