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. 647-9395
Mfr. Part No.B66361G0000X187
BrandEPCOS
HK$9.96
Each (In a Pack of 2)
units
ETD 11, ETD 17, ETD 34 SMPS Transformer 34 x 11.1 x 17.5mm 2600nH N87 17.5mm 34mm 11.1mm - - - - - -
RS Stock No. 162-0141
Mfr. Part No.B66361G0000X187
BrandEPCOS
HK$4.912
Each (In a Box of 300)
units
ETD 11, ETD 17, ETD 34 SMPS Transformer 34 x 11.1 x 17.5mm 2600nH N87 17.5mm 34mm 11.1mm - - - - - -
RS Stock No. 180-834
Mfr. Part No.B65686A0315A027
BrandEPCOS
HK$443.37
1 Pair
Pair(s)
PM 74/59 Energy storing choke 85.5 x 75 x 65mm 315nH N27 59mm 74mm - - - - - - -
RS Stock No. 212-5044
Mfr. Part No.B65684A0000R027
BrandEPCOS
HK$196.46
Each
units
PM 62/49 DC DC converter 62 (Dia.) x 49mm 9200nH N27 - - - - - - - - -
RS Stock No. 167-8340
Mfr. Part No.B65684A0000R027
BrandEPCOS
HK$163.068
Each (In a Box of 20)
units
PM 62/49 DC DC converter 62 (Dia.) x 49mm 9200nH N27 - - - - - - - - -
RS Stock No. 167-8303
Mfr. Part No.B65686A0315A027
BrandEPCOS
HK$407.436
Each
units
PM 74/59 Energy storing choke 85.5 x 75 x 65mm 315nH N27 59mm 74mm - - - - - - -
RS Stock No. 167-8300
Mfr. Part No.B66361G0000X127
BrandEPCOS
HK$4.636
Each (In a Box of 300)
units
ETD 34 - 34 x 11.1 x 17.5mm 2400nH N27 17.5mm 34mm 11.1mm - - - - - -
RS Stock No. 180-812
Mfr. Part No.B65811J0000R087
BrandEPCOS
HK$16.66
1 Pair
Pair(s)
RM - 23.2 x 19.7 x 16.5mm 3300nH N87 16.5mm 23.2mm 19.7mm - - - - - -
RS Stock No. 162-0174
Mfr. Part No.B65811J0000R087
BrandEPCOS
HK$10.228
Each
units
RM - 23.2 x 19.7 x 16.5mm 3300nH N87 16.5mm 23.2mm 19.7mm - - - - - -
RS Stock No. 180-115
Mfr. Part No.B65807J0000R087
BrandEPCOS
HK$16.75
1 Pair
Pair(s)
RM 6 Transformer 17.9 x 14.7 x 12.5mm 2400nH N87 12.5mm 17.9mm 14.7mm - - - - - -
RS Stock No. 167-8248
Mfr. Part No.B65807J0000R087
BrandEPCOS
HK$8.104
Each
units
RM 6 Transformer 17.9 x 14.7 x 12.5mm 2400nH N87 12.5mm 17.9mm 14.7mm - - - - - -
RS Stock No. 483-3573
Mfr. Part No.B66361G0000X127
BrandEPCOS
HK$8.94
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. 167-0294
Mfr. Part No.B66423U0160K187
BrandEPCOS
HK$5.91
Each (In a Box of 300)
units
EFD 30 DC DC converter 30 x 15 x 9.1mm 160nH N87 9.1mm 30mm 15mm - - - - - -
RS Stock No. 167-8288
Mfr. Part No.B65813J0000R087
BrandEPCOS
HK$12.683
Each
units
RM 10 Transformer 28.5 x 24.7 x 18.7mm 4200nH N87 18.7mm 28.5mm 24.7mm - - - - - -
RS Stock No. 167-8283
Mfr. Part No.B65684A0000R087
BrandEPCOS
HK$184.84
Each
units
PM 62/49 DC DC converter 76 x 64 x 55mm 9200nH N87 - 62mm 49mm - - - - - -
RS Stock No. 167-8394
Mfr. Part No.B66343G0000X127
BrandEPCOS
HK$26.904
Each (In a Box of 60)
units
EC 70 Power transformer 70 x 34.6 x 16.8mm 3900nH N27 16.8mm 70mm 34.6mm - - - - - -
RS Stock No. 647-9373
Mfr. Part No.B66361G1000X187
BrandEPCOS
HK$12.865
Each (In a Pack of 2)
units
ETD 34 - 34 x 17.5 x 11.1mm 135nH N87 11.1mm 34mm 17.5mm - - - - - -
RS Stock No. 180-799
Mfr. Part No.B65813J0000R087
BrandEPCOS
HK$21.38
1 Pair
Pair(s)
RM 10 Transformer 28.5 x 24.7 x 18.7mm 4200nH N87 18.7mm 28.5mm 24.7mm - - - - - -
RS Stock No. 180-806
Mfr. Part No.B65684A0000R087
BrandEPCOS
HK$174.29
1 Pair
Pair(s)
PM 62/49 DC DC converter 76 x 64 x 55mm 9200nH N87 - 62mm 49mm - - - - - -
RS Stock No. 647-9610
Mfr. Part No.B66423U0160K187
BrandEPCOS
HK$11.21
Each (In a Pack of 2)
units
EFD 30 DC DC converter 30 x 15 x 9.1mm 160nH N87 9.1mm 30mm 15mm - - - - - -