Transformer Ferrite 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 transformer to operate at very high frequencies. The devices can handle a great deal of power without huge increases in the size of the device.

Types of transformer ferrite cores

Different transformer ferrite cores are intended to be used with specific kinds of equipment. These include broadband transformers, DC/DC converters, flat transformers, power transformers, reactors, switch mode power supply (SMPS ) transformers, and transmitters.

In addition to length, depth, and width, transformer ferrite cores also vary in their minimum and maximum operating temperatures. It is important to consider the operating temperature of the equipment that the core will be used in when choosing between cores. For instance, between one with a maximum temperature of +125°Cand another with one of +210°C.


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Omschrijving Prijs Accessory Type For Use With Dimensions AL Rating Material Depth Length Width Maximum Temperature Series Input Voltage Range Maximum Operating Temperature Minimum Operating Temperature Standards Met
RS-stocknr. 125-3344
FabrikantnummerB65611D0000R048
FabrikantEPCOS
5,065 €
Each (In a Pack of 2)
Aantal stuks
Ferrite Core Resonant Circuit Inductors - 7600nH N48 22mm - 36mm - - - - - -
RS-stocknr. 167-8326
FabrikantnummerB66365G0000X127
FabrikantEPCOS
1,067 €
Each (In a Box of 144)
Aantal stuks
ETD 44 - 43.8 x 22.5 x 15.2mm 3300nH N27 15.2mm 43.8mm 22.5mm - - - - - -
RS-stocknr. 170-1470
FabrikantnummerB65877B0000R097
FabrikantEPCOS
1,961 €
Each (On a Reel of 200)
Aantal stuks
Ferrite Core Power Transformers 26.5 x 19 x 10.08mm 5150nH N97 10.08mm 26.5mm 19mm - - - - - IEC 62317-13
RS-stocknr. 170-1512
FabrikantnummerB66287G0000X187
FabrikantEPCOS
0,865 €
Each (On a Reel of 304)
Aantal stuks
Ferrite Core Power Transformers 31.75 x 20.35 x 6.35mm 5700nH N87 6.35mm 31.75mm 20.35mm - ELP - - - IEC 62317-9
RS-stocknr. 170-7540
FabrikantnummerFS-1ETD-4415-10
FabrikantBlock
2,712 €
Each (In a Box of 80)
Aantal stuks
ETD 44 Choke Converter Topologies, Transmitter 44 x 15 x 22mm 3500nH N87 22mm 44mm 15mm - - - - - -
RS-stocknr. 647-9345
FabrikantnummerB66387G0000X187
FabrikantEPCOS
5,39 €
Each (In a Pack of 2)
Aantal stuks
E 65 - 65 x 32.8 x 27.4mm 7900nH N87 27.4mm 65mm 32.8mm - - - - - -
RS-stocknr. 125-3701
FabrikantnummerB66479G0000X197
FabrikantEPCOS
1,002 €
Each (In a Pack of 10)
Aantal stuks
Ferrite Core Power Transformers 12.8 x 8.7 x 2.85mm 1700nH N97 2.85mm 12.8mm 8.7mm - - - - - IEC 62317-9
RS-stocknr. 170-7513
FabrikantnummerFS-1ETD-4916-02
FabrikantBlock
2,203 €
Each (In a Box of 60)
Aantal stuks
ETD 49 Choke Converter Topologies, Transmitter 49 x 16 x 25mm 3800nH N87 25mm 49mm 16mm - - - - - -
RS-stocknr. 125-3409
FabrikantnummerB65841A0000R087
FabrikantEPCOS
0,792 €
Each (In a Pack of 10)
Aantal stuks
Ferrite Core Power Transformers 11.8 x 7.85 x 10.4mm 1100nH N87 10.4mm 11.8mm 7.85mm - - - - - IEC 61596
RS-stocknr. 125-3400
FabrikantnummerB65819N0315A048
FabrikantEPCOS
3,354 €
Each (In a Pack of 5)
Aantal stuks
Ferrite Core Resonant Circuit Inductors, Transformers 20.3 x 17.2 x 13.5mm 315nH N48 13.5mm 20.3mm 17.2mm - - - - - IEC 62317-4
RS-stocknr. 170-1584
FabrikantnummerB66417G0000X197
FabrikantEPCOS
0,259 €
Each (On a Reel of 1260)
Aantal stuks
Ferrite Core DC/DC Converter, Flat Transformers, Power Transformers 20 x 6.65 x 10mm 1250nH N97 10mm 20mm 6.65mm - - - - - -
RS-stocknr. 167-8386
FabrikantnummerB66371G0000X127
FabrikantEPCOS
5,235 €
Each (In a Box of 30)
Aantal stuks
E 32, E 33, E 70 Transformer 70.5 x 32 x 33.2mm 8850nH N27 33.2mm 70.5mm 32mm - - - - - -
RS-stocknr. 170-1577
FabrikantnummerB66413U0100K187
FabrikantEPCOS
0,205 €
Each (On a Reel of 1920)
Aantal stuks
Ferrite Core DC/DC Converter, Flat Transformers, Power Transformers 15 x 4.85 x 7.5mm 100nH N87 7.5mm 15mm 4.85mm - - - - - IEC 61185
RS-stocknr. 170-1483
FabrikantnummerB65883A0000R097
FabrikantEPCOS
3,278 €
Each (On a Reel of 45)
Aantal stuks
Ferrite Core Power Transformers 40.5 x 28 x 19.9mm 4500nH N97 19.9mm 40.5mm 28mm - - - - - IEC 62317-13
RS-stocknr. 167-8396
FabrikantnummerB66395G0000X187
FabrikantEPCOS
2,102 €
Each (In a Box of 81)
Aantal stuks
ETD 54 - 54.5 x 27.8 x 19.3mm 4450nH N87 19.3mm 54.5mm 27.8mm - - - - - -
RS-stocknr. 170-1501
FabrikantnummerB66229G0000X187
FabrikantEPCOS
0,496 €
Each (On a Reel of 480)
Aantal stuks
Ferrite Core Power Transformers 32 x 9.5 x 16.4mm 2300nH N87 16.4mm 32mm 9.5mm - - - - - IEC 61246
RS-stocknr. 647-9317
FabrikantnummerB66325G0000X187
FabrikantEPCOS
1,80 €
Each (In a Pack of 2)
Aantal stuks
E 42 - 42 x 21.2 x 15.2mm 3950nH N87 15.2mm 42mm 21.2mm - - - - - -
RS-stocknr. 125-3642
FabrikantnummerB66305G0040X127
FabrikantEPCOS
0,248 €
Each (In a Pack of 50)
Aantal stuks
Ferrite Core Miniature Transformers, Power Transformers 12.6 x 3.7 x 6.5mm 250nH N27 6.5mm 12.6mm 3.7mm - - - - - IEC 61246
RS-stocknr. 170-1573
FabrikantnummerB66397G0000X197
FabrikantEPCOS
3,989 €
Each (On a Reel of 40)
Aantal stuks
Ferrite Core Power Transformers, SMPS Transformers 59.8 x 31.2 x 22.1mm 5500nH N97 22.1mm 59.8mm 31.2mm - - - - - IEC 61185
RS-stocknr. 170-7460
FabrikantnummerFS-1E-2507-00
FabrikantBlock
1,148 €
Each (In a Box of 10)
Aantal stuks
E 25 Reactors, Transformers 25 x 7.5 x 12.8mm 1850nH N87 12.8mm 25mm 7.5mm +210°C - - - - -
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