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. 167-0293
Mfr. Part No.B67345B0002X087
BrandEPCOS
kr 145,774
Each (In a Box of 8)
Units
I 93/104/30 Power transformer 93 x 28 x 30mm 7900nH N87 30mm 93mm 28mm - - - - - -
RS Stock No. 167-0378
Mfr. Part No.B67345B0001X087
BrandEPCOS
kr 281,204
Each (In a Box of 8)
Units
U 93/104/30 Power transformer 93 x 76 x 30mm 5700nH N87 30mm 93mm 76mm - - - - - -
RS Stock No. 647-9648
Mfr. Part No.B67345B0001X087
BrandEPCOS
kr 281,15
Each
Units
U 93/104/30 Power transformer 93 x 76 x 30mm 5700nH N87 30mm 93mm 76mm - - - - - -
RS Stock No. 647-9660
Mfr. Part No.B67345B0002X087
BrandEPCOS
kr 201,88
Each
Units
I 93/104/30 Power transformer 93 x 28 x 30mm 7900nH N87 30mm 93mm 28mm - - - - - -
RS Stock No. 170-1430
Mfr. Part No.B65807N0250A048
BrandEPCOS
kr 11,045
Each (On a Reel of 500)
Units
Ferrite Core Resonant Circuit Inductors, Transformers 17.9 x 14.7 x 12.5mm 250nH N48 12.5mm 17.9mm 14.7mm - - - - - IEC 62317-4
RS Stock No. 125-3379
Mfr. Part No.B65807N0250A048
BrandEPCOS
kr 22,892
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors, Transformers 17.9 x 14.7 x 12.5mm 250nH N48 12.5mm 17.9mm 14.7mm - - - - - IEC 62317-4
RS Stock No. 170-1460
Mfr. Part No.B65841A0000R087
BrandEPCOS
kr 4,106
Each (On a Reel of 1000)
Units
Ferrite Core Power Transformers 11.8 x 7.85 x 10.4mm 1100nH N87 10.4mm 11.8mm 7.85mm - - - - - IEC 61596
RS Stock No. 125-3671
Mfr. Part No.B66361G0200X187
BrandEPCOS
kr 10,428
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers, SMPS Transformers 34 x 11.1 x 17.5mm 482nH N87 17.5mm 34mm 11.1mm - - - - - IEC 61185
RS Stock No. 125-3680
Mfr. Part No.B66367G1000X187
BrandEPCOS
kr 26,58
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers, SMPS Transformers 48.5 x 16.7 x 24.9mm 314nH N87 24.9mm 48.5mm 16.7mm - - - - - IEC 61185
RS Stock No. 170-1462
Mfr. Part No.B65843A0000R087
BrandEPCOS
kr 5,178
Each (On a Reel of 500)
Units
Ferrite Core Power Transformers 12.8 x 9 x 13mm 1600nH N87 13mm 12.8mm 9mm - - - - - IEC 61596
RS Stock No. 125-3689
Mfr. Part No.B66413U0100K187
BrandEPCOS
kr 4,257
Each (In a Pack of 20)
Units
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 Stock No. 125-3672
Mfr. Part No.B66361G0500X187
BrandEPCOS
kr 9,97
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers, SMPS Transformers 34 x 11.1 x 17.5mm 251nH N87 17.5mm 34mm 11.1mm - - - - - IEC 61185
RS Stock No. 840-7434
Mfr. Part No.FS-1E-2006-01
BrandBlock
kr 6,45
Each
Units
E 20 Reactors, Transformers 20.4 x 5.9 x 10.1mm 1470nH N87 10.1mm 20.4mm 5.9mm +210°C - - - - -
RS Stock No. 125-3690
Mfr. Part No.B66413U0160L187
BrandEPCOS
kr 4,023
Each (In a Pack of 20)
Units
Ferrite Core DC/DC Converter, Flat Transformers, Power Transformers 15 x 4.85 x 7.5mm 160nH N87 7.5mm 15mm 4.85mm - - - - - IEC 61185
RS Stock No. 125-3637
Mfr. Part No.B66293K0000X187
BrandEPCOS
kr 112,46
Each
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
RS Stock No. 125-3630
Mfr. Part No.B66287G0000X197
BrandEPCOS
kr 21,994
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers 31.75 x 20.35 x 6.35mm 5700nH N97 6.35mm 31.75mm 20.35mm - ELP - - - IEC 62317-9
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. 125-3673
Mfr. Part No.B66363G0000X187
BrandEPCOS
kr 17,288
Each (In a Pack of 5)
Units
Ferrite Core Power Transformers, SMPS Transformers 38.9 x 12.8 x 20mm 2700nH N87 20mm 38.9mm 12.8mm - - - - - IEC 61185
RS Stock No. 161-7778
Mfr. Part No.FS-1E-7032-10
BrandBlock
kr 79,96
Each (In a Box of 24)
Units
E 70 Reactors, Transformers 70.5 x 32 x 33.2mm 9700nH N87 33.2mm 70.5mm 32mm +210°C - - - - -
RS Stock No. 170-1413
Mfr. Part No.B65733A0000R027
BrandEPCOS
kr 1 394,755
Each (On a Reel of 2)
Units
Ferrite Core Power Transformers - 16000nH N27 93mm - 114mm - - - - - IEC 61247
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