Coil Formers

Coil formers are components found in a transformer(an electrical device that transfers energy between two or more circuits). They're commonly used in electrical printed circuit boards(PCBs) to produce the energy needed to power electrical machines such as motors and generators.

Coil former applications

Coil formers are commonly used in transformers or as reactors in switch-mode power supplies. Transformers are used to bring voltage up or down in an AC electrical circuit. Both transformers and switch-mode power supplies can be used to convert mains AC power to DC power.

There are transformers all over every house. They are inside the chargers used to charge your mobile phone and other personal computing devices. They're also found in loudspeakers and microphones.

Advantages of using coil formers

  • Coil formers come in different types depending on whether you need to mount them horizontally or vertically.
  • Coil formers are usually made with an insulating material, such as thermosetting plastic, and are resistant to soldering and soldering heat.

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Description Price Accessory Type For Use With Dimensions Number of Pins Material Depth Length Width Maximum Temperature
RS Stock No. 647-9597
Mfr. Part No.B66422W1010D001
BrandEPCOS
SGD1.90
Each (In a Pack of 5)
units
EFD 25/13/9 Coil Former B66421 25 x 26 x 12.9mm 10 GFR Thermosetting Plastic 12.9mm 25mm 26mm +180°C
RS Stock No. 167-0495
Mfr. Part No.B66422W1010D001
BrandEPCOS
SGD0.981
Each (In a Box of 325)
units
EFD 25/13/9 Coil Former B66421 25 x 26 x 12.9mm 10 GFR Thermosetting Plastic 12.9mm 25mm 26mm +180°C
RS Stock No. 213-3922
Mfr. Part No.B66362W1014T001
BrandEPCOS
SGD2.20
Each
units
ETD 34 B66361G - 14 GFR Polyterephthalate - - - +180°C
RS Stock No. 167-8222
Mfr. Part No.B66362W1014T001
BrandEPCOS
SGD1.639
Each (In a Box of 100)
units
ETD 34 B66361G 39.6 x 33.1 x 41.6mm 14 GFR Polyterephthalate 44mm 39.6mm 27mm +180°C
RS Stock No. 125-3403
Mfr. Part No.B65820W1008D001
BrandEPCOS
SGD1.338
Each (In a Pack of 10)
units
Vertical Coil Former RM 7 Core - 8 GFR Thermosetting Plastic - - 14.65 (Dia.)mm +180°C
RS Stock No. 170-1455
Mfr. Part No.B65820W1008D001
BrandEPCOS
SGD1.15
Each (On a Reel of 250)
units
Vertical Coil Former RM 7 Core - 8 GFR Thermosetting Plastic - - 14.65 (Dia.)mm +180°C
RS Stock No. 162-0179
Mfr. Part No.B66366B1018T001
BrandEPCOS
SGD1.512
Each (In a Box of 50)
units
ETD 44/22/15 Coil Former B66365 49.6 x 51 x 38.4mm 18 GFR Polyterephthalate 38.4mm 49.6mm 51mm +155°C
RS Stock No. 483-3595
Mfr. Part No.B66362B1014T001
BrandEPCOS
SGD1.856
Each (In a Pack of 5)
units
ETD 34/17/11 Coil Former B66361 39.6 x 41.8 x 33.1mm 14 GFR Polyterephthalate 33.1mm 39.6mm 41.8mm +155°C
RS Stock No. 167-8224
Mfr. Part No.B66362B1014T001
BrandEPCOS
SGD1.539
Each (In a Box of 100)
units
ETD 34/17/11 Coil Former B66361 39.6 x 41.8 x 33.1mm 14 GFR Polyterephthalate 33.1mm 39.6mm 41.8mm +155°C
RS Stock No. 167-8562
Mfr. Part No.B66242J1000R001
BrandEPCOS
SGD3.90
Each (In a Box of 100)
units
E 42 B66325, B66329 29.2 x 35 x 37.5mm 8 - 37.5mm 29.2mm 35mm -
RS Stock No. 647-9402
Mfr. Part No.B66362X1014T001
BrandEPCOS
SGD2.09
Each
units
ETD 34/17/11 Coil Former B66361 39.6 x 27 x 44mm 14 GFR Polyterephthalate 44mm 39.6mm 27mm +180°C
RS Stock No. 212-5038
Mfr. Part No.B65647B1014T001
BrandEPCOS
SGD5.60
Each
units
PM Ferrites 65.5 x 38.5 x 38mm 14 GFR Polyterephthalate - 65.5mm 38.5mm -
RS Stock No. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
SGD3.017
Each (In a Box of 20)
units
PM 62/49 Coil Former B65684 75.5 x 48.5 x 48mm 16 GFR Polyterephthalate 48mm 75.5mm 48.5mm +155°C
RS Stock No. 125-3339
Mfr. Part No.B65527B1008T001
BrandEPCOS
SGD1.224
Each (In a Pack of 10)
units
SMD Coil Former ER 9.5/5 Core - 8 GFR Liquid Crystal Polymer - 7.6mm 8.2mm +155°C
RS Stock No. 125-3623
Mfr. Part No.B66232J1112T001
BrandEPCOS
SGD1.764
Each (In a Pack of 10)
units
Vertical Coil Former E 30/15/7 Core - 12 GFR Polyterephthalate - 35.4mm 19.2mm +155°C
RS Stock No. 167-8503
Mfr. Part No.B65647B1014T001
BrandEPCOS
SGD6.029
Each (In a Box of 30)
units
PM Ferrites 65.5 x 38.5 x 38mm 14 GFR Polyterephthalate - 65.5mm 38.5mm -
RS Stock No. 125-3603
Mfr. Part No.B65888N1012D001
BrandEPCOS
SGD1.762
Each (In a Pack of 5)
units
Vertical Coil Former RM 14 Core - 12 GFR Thermosetting Plastic - - 28.8 (Dia.)mm +180°C
RS Stock No. 647-9092
Mfr. Part No.B65685A1000T001
BrandEPCOS
SGD4.85
Each
units
PM 62/49 Coil Former B65684 75.5 x 48.5 x 48mm 16 GFR Polyterephthalate 48mm 75.5mm 48.5mm +155°C
RS Stock No. 653-1207
Mfr. Part No.B66368B1020T001
BrandEPCOS
SGD2.58
Each
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -
RS Stock No. 167-0150
Mfr. Part No.B66368B1020T001
BrandEPCOS
SGD2.515
Each (In a Box of 60)
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -