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. 167-8303
Mfr. Part No.B65686A0315A027
BrandEPCOS
£27.936
Each
Units
PM 74/59 Energy storing choke 85.5 x 75 x 65mm 315nH N27 59mm 74mm - - - - - - -
RS Stock No. 213-0642
Mfr. Part No.B66343G0000X127
BrandEPCOS
£3.965
Each (In a Pack of 2)
Units
EC 70 Power transformer 70 x 34.6 x 16.8mm 3900nH N27 16.8mm 70mm 34.6mm - - - - - -
RS Stock No. 125-3348
Mfr. Part No.B65651D0000R048
BrandEPCOS
£1.688
Each (In a Pack of 5)
Units
Ferrite Core Resonant Circuit Inductors - 2800nH N48 10.6mm - 18.4mm - - - - - IEC 60133
RS Stock No. 170-1401
Mfr. Part No.B65651D0000R048
BrandEPCOS
£1.531
Each (On a Reel of 500)
Units
Ferrite Core Resonant Circuit Inductors - 2800nH N48 10.6mm - 18.4mm - - - - - IEC 60133
RS Stock No. 167-8291
Mfr. Part No.B65815E0000R087
BrandEPCOS
£1.66
Each
Units
RM 12 - 37.6 x 29.8 x 24.6mm 6000nH N87 24.6mm 37.6mm 29.8mm - - - - - -
RS Stock No. 180-783
Mfr. Part No.B65815E0000R087
BrandEPCOS
£2.95
1 Pair
Pair(s)
RM 12 - 37.6 x 29.8 x 24.6mm 6000nH N87 24.6mm 37.6mm 29.8mm - - - - - -
RS Stock No. 167-8311
Mfr. Part No.B66421G0000X187
BrandEPCOS
£0.311
Each (In a Box of 650)
Units
EFD 25 DC DC converter 25 x 12.5 x 9.1mm 2000nH N87 9.1mm 25mm 12.5mm - - - - - -
RS Stock No. 483-3618
Mfr. Part No.B66421G0000X187
BrandEPCOS
£0.492
Each (In a Pack of 5)
Units
EFD 25 DC DC converter 25 x 12.5 x 9.1mm 2000nH N87 9.1mm 25mm 12.5mm - - - - - -
RS Stock No. 167-0378
Mfr. Part No.B67345B0001X087
BrandEPCOS
£24.191
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
£24.19
Each
Units
U 93/104/30 Power transformer 93 x 76 x 30mm 5700nH N87 30mm 93mm 76mm - - - - - -
RS Stock No. 647-9446
Mfr. Part No.B66367G0500X187
BrandEPCOS
£1.385
Each (In a Pack of 2)
Units
ETD 49 SMPS Transformer 48.5 x 16.7 x 24.9mm 525nH N87 24.9mm 48.5mm 16.7mm - - - - - -
RS Stock No. 167-8334
Mfr. Part No.B66367G0500X187
BrandEPCOS
£0.991
Each (In a Box of 120)
Units
ETD 49 SMPS Transformer 48.5 x 16.7 x 24.9mm 525nH N87 24.9mm 48.5mm 16.7mm - - - - - -
RS Stock No. 167-8337
Mfr. Part No.B66367G0000X187
BrandEPCOS
£0.95
Each (In a Box of 120)
Units
ETD 49 - 48.5 x 24.9 x 16.7mm 3800nH N87 16.7mm 48.5mm 24.9mm - - - - - -
RS Stock No. 647-9468
Mfr. Part No.B66367G0000X187
BrandEPCOS
£1.34
Each (In a Pack of 2)
Units
ETD 49 - 48.5 x 24.9 x 16.7mm 3800nH N87 16.7mm 48.5mm 24.9mm - - - - - -
RS Stock No. 162-0169
Mfr. Part No.B65887E0160A041
BrandEPCOS
£3.903
Each (In a Box of 60)
Units
RM 14 - 42.2 x 34.8 x 30.2mm 160nH N41 30.2mm 42.2mm 34.8mm - - - - - -
RS Stock No. 212-6772
Mfr. Part No.B65887E0160A041
BrandEPCOS
£5.98
Each
Units
RM 14 - 42.2 x 34.8 x 30.2mm 160nH N41 30.2mm 42.2mm 34.8mm - - - - - -
RS Stock No. 180-777
Mfr. Part No.B65887E0000R087
BrandEPCOS
£4.51
1 Pair
Pair(s)
RM 14 - 42.2 x 34.8 x 30.2mm 6000nH N87 30.2mm 42.2mm 34.8mm - - - - - -
RS Stock No. 180-806
Mfr. Part No.B65684A0000R087
BrandEPCOS
£13.42
1 Pair
Pair(s)
PM 62/49 DC DC converter 76 x 64 x 55mm 9200nH N87 - 62mm 49mm - - - - - -
RS Stock No. 167-8283
Mfr. Part No.B65684A0000R087
BrandEPCOS
£13.018
Each
Units
PM 62/49 DC DC converter 76 x 64 x 55mm 9200nH N87 - 62mm 49mm - - - - - -
RS Stock No. 647-9547
Mfr. Part No.B66417G0000X187
BrandEPCOS
£0.397
Each (In a Pack of 10)
Units
EFD 20 DC DC converter 20 x 10 x 6.65mm 1200nH N87 6.65mm 20mm 10mm - - - - - -
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