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.125-3331BrandEPCOSManufacturers Part No.B65523J0000R087

7.377 OMR

0.295 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
5mm
9.5mm
IEC 62317-9
5mm
EPCOS N87 E 20/10/6 Transformer Ferrite Core, 171 nH, For Use With Power TransFormers
RS Stock No.125-3652BrandEPCOSManufacturers Part No.B66311G0250X187

6.405 OMR

0.320 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
5.9mm
20.4mm
IEC 61246
10.1mm
EPCOS N27 E 13/7/4 Transformer Ferrite Core, 800 nH, For Use With Power TransFormers, Miniature TransFormers
RS Stock No.125-3640BrandEPCOSManufacturers Part No.B66305G0000X127

6.593 OMR

0.132 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
3.7mm
12.6mm
IEC 61246
6.5mm
EPCOS N87 EFD 15/8/5 Transformer Ferrite Core, 100 nH, For Use With Power TransFormers, DC/DC Converter, Flat
RS Stock No.125-3689BrandEPCOSManufacturers Part No.B66413U0100K187

6.153 OMR

0.308 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
4.85mm
15mm
IEC 61185
7.5mm
EPCOS N87 E 30/15/7 Transformer Ferrite Core, 1900 nH, For Use With Power TransFormers
RS Stock No.125-3658BrandEPCOSManufacturers Part No.B66319G0000X187

8.917 OMR

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

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

7.377 OMR

1.475 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
14.7mm
17.9mm
IEC 62317-4
12.5mm
EPCOS N87 ELP 32/6/20 Transformer Ferrite Core, 5700 nH, For Use With Power TransFormers
RS Stock No.125-3629BrandEPCOSManufacturers Part No.B66287G0000X187

10.486 OMR

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

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

10.141 OMR

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

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

4.521 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
7.5mm
25mm
IEC 61246
12.8mm
EPCOS N87 EFD 25 Transformer Ferrite Core, 2000 nH, For Use With DC DC Converter
Also available in industry standard packaging
RS Stock No.483-3618BrandEPCOSManufacturers Part No.B66421G0000X187

5.023 OMR

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

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

5.023 OMR

0.101 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
3.7mm
12.6mm
IEC 61246
6.5mm
EPCOS N87 ETD 39/20/13 Transformer Ferrite Core, 2700 nH, For Use With Power TransFormers, SMPS transformers
RS Stock No.125-3673BrandEPCOSManufacturers Part No.B66363G0000X187

5.620 OMR

1.124 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
12.8mm
38.9mm
IEC 61185
20mm
EPCOS N87 EFD 30 Transformer Ferrite Core, 160 nH, For Use With DC DC Converter
Also available in industry standard packaging
RS Stock No.647-9610BrandEPCOSManufacturers Part No.B66423U0160K187

1.357 OMR

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

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

5.274 OMR

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

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

4.056 OMR

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

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

7.912 OMR

0.396 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
9.1mm
25mm
No
12.5mm
EPCOS N87 E 25/13/7 Transformer Ferrite Core, 1850 nH, For Use With Power TransFormers
RS Stock No.125-3654BrandEPCOSManufacturers Part No.B66317G0000X187

7.284 OMR

0.364 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
7.5mm
25mm
IEC 61246
12.8mm
EPCOS N87 RM 5 Transformer Ferrite Core, 2000 nH, For Use With Power TransFormers
RS Stock No.125-3368BrandEPCOSManufacturers Part No.B65805J0000R087

7.284 OMR

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

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

5.274 OMR

0.264 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
4.85mm
15mm
IEC 61185
7.5mm
EPCOS N48 P 18/11 Transformer Ferrite Core, 400 nH, For Use With Resonant Circuit Inductors
RS Stock No.125-3349BrandEPCOSManufacturers Part No.B65651T0400A048

2.926 OMR

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

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

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