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. 125-3700
Mfr. Part No.B66423U0315K187
BrandEPCOS
£0.709
Each (In a Pack of 10)
Units
Ferrite Core DC/DC Converter, Flat Transformers, Power Transformers 30 x 9.1 x 15mm 315nH N87 15mm 30mm 9.1mm - - - - - -
RS Stock No. 172-4784
Mfr. Part No.FS-1EFD-2007-10
BrandBlock
£0.14
Each (In a Box of 252)
Units
EFD 20 Choke Converter Topologies, Transmitter 20 x 7 x 10mm 1200nH N87 10mm 20mm 7mm - - - - - -
RS Stock No. 169-1928
Mfr. Part No.PLA51LA32
BrandVishay
£88.90
Each
Units
- High Power Density DC/DC Converter 70 x 53 x 22mm 128µH - 22mm 70mm 53mm +180°C PLA51 50 → 110 V dc +125°C -55°C -
RS Stock No. 170-1481
Mfr. Part No.B65883A0000R087
BrandEPCOS
£3.377
Each (On a Reel of 45)
Units
Ferrite Core Power Transformers 40.5 x 28 x 19.9mm 4300nH N87 19.9mm 40.5mm 28mm - - - - - IEC 62317-13
RS Stock No. 840-7632
Mfr. Part No.FS-1E-5521-05
BrandBlock
£3.15
Each
Units
E 55 Transformers, Reactors 55 x 21 x 27.8mm 6400nH N87 27.8mm 55mm 21mm +210°C - - - - -
RS Stock No. 170-1521
Mfr. Part No.B66293K0000X187
BrandEPCOS
£4.396
Each (On a Reel of 60)
Units
Ferrite Core Power Transformers 58.4 x 38.1 x 4.05mm 8400nH N87 4.05mm 58.4mm 38.1mm - ELP - - - IEC 62317-9