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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, 800nH, For Use With Power Transformers
RS Stock No.: 125-3331Brand: EPCOSManufacturers Part No.: B65523J0000R087

AED 2.468

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

AED 2.10

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

AED 4.568

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

AED 1.89

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

AED 3.202

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

AED 14.91

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Epcos
RM 6
Broadband Transformers
17.9 x 14.7 x 12.5mm
8600nH
T38
12.5mm
17.9mm
14.7mm
-
IEC 62317-4
EPCOS N87 ELP 32/6/20 Transformer Ferrite Core, 5700nH, For Use With Power Transformers
RS Stock No.: 125-3629Brand: EPCOSManufacturers Part No.: B66287G0000X187

AED 29.715

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

AED 15.802

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

AED 2.048

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Epcos
E 25/13/7
Power Transformers
25 x 7.5 x 12.8mm
1750nH
N27
12.8mm
25mm
7.5mm
-
IEC 61246

AED 6.352

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Epcos
EFD 25
DC DC converter
25 x 12.5 x 9.1mm
2000nH
N87
9.1mm
25mm
12.5mm
-
-
EPCOS N87 E 13/7/4 Transformer Ferrite Core, 850nH, For Use With Miniature Transformers, Power Transformers
RS Stock No.: 125-3641Brand: EPCOSManufacturers Part No.: B66305G0000X187

AED 2.625

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

AED 9.712

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Epcos
ETD 39/20/13
Power Transformers, SMPS Transformers
38.9 x 12.8 x 20mm
2700nH
N87
20mm
38.9mm
12.8mm
-
IEC 61185

AED 5.775

Each (In a Pack of 2) (ex VAT)

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Epcos
EFD 30
DC DC converter
30 x 15 x 9.1mm
160nH
N87
9.1mm
30mm
15mm
-
-
EPCOS N87 ELP Transformer Ferrite Core, 2600nH, For Use With Power Transformers
RS Stock No.: 125-3625Brand: EPCOSManufacturers Part No.: B66283G0000X187

AED 4.515

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

AED 17.798

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

AED 3.99

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Epcos
EFD 25/13/9
DC/DC Converter, Flat Transformers, Power Transformers
25 x 9.1 x 12.5mm
2100nH
N97
12.5mm
25mm
9.1mm
-
-
EPCOS N87 E 25/13/7 Transformer Ferrite Core, 1850nH, For Use With Power Transformers
RS Stock No.: 125-3654Brand: EPCOSManufacturers Part No.: B66317G0000X187

AED 2.572

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

AED 10.29

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

AED 2.468

Each (In a Pack of 20) (ex VAT)

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

AED 126.21

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Epcos
P 18/11
Resonant Circuit Inductors
-
400nH
N48
10.6mm
-
18.4mm
-
IEC 60133

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