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
RS Stock No.: 125-3331Brand: EPCOSManufacturers Part No.: B65523J0000R087

7.156 OMR

0.287 OMR Each (In a Pack of 25) (ex VAT)

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

6.334 OMR

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

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

6.394 OMR

0.128 OMR Each (In a Pack of 50) (ex VAT)

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

6.212 OMR

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

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

8.770 OMR

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

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

7.278 OMR

1.455 OMR Each (In a Pack of 5) (ex VAT)

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

10.353 OMR

1.035 OMR Each (In a Pack of 10) (ex VAT)

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

10.018 OMR

2.003 OMR Each (In a Pack of 5) (ex VAT)

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

4.507 OMR

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

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E 25/13/7
Power TransFormers
Type E
1750nH
N27
155°C
B66317
25mm
12.8mm
7.5 mm
IEC 61246

4.689 OMR

0.938 OMR Each (In a Pack of 5) (ex VAT)

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

10.048 OMR

0.201 OMR Each (In a Pack of 50) (ex VAT)

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

6.486 OMR

1.297 OMR Each (In a Pack of 5) (ex VAT)

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ETD 39/20/13
Power TransFormers, SMPS transformers
-
2700nH
N87
155°C
B66363
38.9mm
20mm
12.8 mm
IEC 61185

1.316 OMR

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

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

5.176 OMR

0.518 OMR Each (In a Pack of 10) (ex VAT)

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

3.983 OMR

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

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

7.795 OMR

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

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

6.943 OMR

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

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

7.217 OMR

1.444 OMR Each (In a Pack of 5) (ex VAT)

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

4.994 OMR

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

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

3.983 OMR

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

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

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