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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Description Price 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 Stock No. 125-3399
Mfr. Part No.B65819N0250A048
BrandEPCOS
kr 11,532
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors, Transformers 20.3 x 17.2 x 13.5mm 250nH N48 13.5mm 20.3mm 17.2mm - - - - - IEC 62317-4
RS Stock No. 170-1470
Mfr. Part No.B65877B0000R097
BrandEPCOS
kr 15,336
Each (On a Reel of 200)
Units
Ferrite Core Power Transformers 26.5 x 19 x 10.08mm 5150nH N97 10.08mm 26.5mm 19mm - - - - - IEC 62317-13
RS Stock No. 180-812
Mfr. Part No.B65811J0000R087
BrandEPCOS
kr 15,05
1 Pair(s)
Pair(s)
RM - 23.2 x 19.7 x 16.5mm 3300nH N87 16.5mm 23.2mm 19.7mm - - - - - -
RS Stock No. 483-3573
Mfr. Part No.B66361G0000X127
BrandEPCOS
kr 9,67
Each (In a Pack of 5)
Units
ETD 34 - 34 x 11.1 x 17.5mm 2400nH N27 17.5mm 34mm 11.1mm - - - - - -
RS Stock No. 167-8389
Mfr. Part No.B66371G0000X187
BrandEPCOS
kr 57,062
Each (In a Box of 30)
Units
E 70 Transformer 70.5 x 32 x 33.2mm 9700nH N87 33.2mm 70.5mm 32mm - - - - - -
RS Stock No. 212-5000
Mfr. Part No.B65646A0000R027
BrandEPCOS
kr 149,85
Each
Units
PM 50/39 - - 7400nH N27 39mm 50mm - - - - - - -
RS Stock No. 170-1400
Mfr. Part No.B65646A0000R087
BrandEPCOS
kr 108,733
Each (On a Reel of 30)
Units
Ferrite Core Energy Storage Chokes, Power Transformers - 7400nH N87 39mm - 50mm - - - - - IEC 61247
RS Stock No. 212-5044
Mfr. Part No.B65684A0000R027
BrandEPCOS
kr 198,10
Each
Units
PM 62/49 DC DC converter 62 (Dia.) x 49mm 9200nH N27 - - - - - - - - -
RS Stock No. 170-1510
Mfr. Part No.B66285G0000X187
BrandEPCOS
kr 4,01
Each (On a Reel of 600)
Units
Ferrite Core Power Transformers 21.8 x 15.8 x 5.7mm 4500nH N87 5.7mm 21.8mm 15.8mm - ELP - - - IEC 62317-9
RS Stock No. 125-3348
Mfr. Part No.B65651D0000R048
BrandEPCOS
kr 29,012
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors - 2800nH N48 10.6mm - 18.4mm - - - - - IEC 60133
RS Stock No. 125-3639
Mfr. Part No.B66295K0000X187
BrandEPCOS
kr 87,94
Each
Units
Ferrite Core Power Transformers 64 x 50.8 x 5.1mm 14000nH N87 5.1mm 64mm 50.8mm - ELP - - - IEC 62317-9
RS Stock No. 125-3327
Mfr. Part No.B65517D0063A033
BrandEPCOS
kr 15,952
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors - 63nH M33 5.4mm - 9.3mm - - - - - IEC 60133
RS Stock No. 125-3661
Mfr. Part No.B66335G0000X187
BrandEPCOS
kr 34,495
Each (In a Pack of 2)
Units
Ferrite Core Power Transformers 55 x 21 x 27.8mm 6400nH N87 27.8mm 55mm 21mm - - - - - IEC 61246
RS Stock No. 647-9547
Mfr. Part No.B66417G0000X187
BrandEPCOS
kr 4,467
Each (In a Pack of 10)
Units
EFD 20 DC DC converter 20 x 10 x 6.65mm 1200nH N87 6.65mm 20mm 10mm - - - - - -
RS Stock No. 125-3370
Mfr. Part No.B65805N0250A048
BrandEPCOS
kr 21,056
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors, Transformers 14.6 x 12.3 x 10.5mm 250nH N48 10.5mm 14.6mm 12.3mm - - - - - IEC 62317-4
RS Stock No. 167-8338
Mfr. Part No.B65684A0315A027
BrandEPCOS
kr 145,821
Each (In a Box of 20)
Units
PM 62/49 DC DC converter 62 (Dia.) x 49mm 315nH N27 - - - - - - - - -
RS Stock No. 170-7500
Mfr. Part No.FS-1ETD-4415-01
BrandBlock
kr 32,13
Each (In a Box of 80)
Units
ETD 44 Choke Converter Topologies, Transmitter 44 x 15 x 22mm 3500nH N87 22mm 44mm 15mm - - - - - -
RS Stock No. 172-4827
Mfr. Part No.FS-1E-3209-05
BrandBlock
kr 15,501
Each (In a Box of 80)
Units
E 32/16/11 Reactors, Transformers 32 x 9.5 x 16.4mm 2300nH N87 16.4mm 32mm 9.5mm +210°C - - - - -
RS Stock No. 170-1418
Mfr. Part No.B65805J0000R087
BrandEPCOS
kr 8,172
Each (On a Reel of 500)
Units
Ferrite Core Power Transformers 14.6 x 12.3 x 10.5mm 2000nH N87 10.5mm 14.6mm 12.3mm - - - - - IEC 62317-4
RS Stock No. 125-3674
Mfr. Part No.B66363G0000X197
BrandEPCOS
kr 21,196
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers, SMPS Transformers 38.9 x 12.8 x 20mm 2800nH N97 20mm 38.9mm 12.8mm - - - - - IEC 61185
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