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. 125-3375
Mfr. Part No.B65806N1106D001
BrandEPCOS
SGD1.509
Each (In a Pack of 10)
units
Vertical Coil Former RM 5 Core - 6 GFR Thermosetting Plastic - - 10.1 (Dia.)mm +155°C
RS Stock No. 125-3358
Mfr. Part No.B65672B0000T001
BrandEPCOS
SGD0.604
Each (In a Pack of 25)
units
Vertical Coil Former P 26 x 16 Core - - GFR Polyterephthalate - - 20.9 (Dia.)mm +155°C
RS Stock No. 125-3601
Mfr. Part No.B65884E0012D001
BrandEPCOS
SGD3.04
Each (In a Pack of 5)
units
Vertical Coil Former PQ 40 x 40 Core - 12 PMC Thermosetting Plastic - 38.1mm 40mm -
RS Stock No. 170-1494
Mfr. Part No.B66206B1110T001
BrandEPCOS
SGD1.131
Each (On a Reel of 735)
units
Horizontal Coil Former E 20/10/6 Core - 10 GFR Polyterephthalate - 22mm 21.2mm +155°C
RS Stock No. 125-3613
Mfr. Part No.B66206W1110T001
BrandEPCOS
SGD1.912
Each (In a Pack of 10)
units
Vertical Coil Former E 20/10/6 Core - 10 GFR Polyterephthalate - 22mm 13.9mm +155°C
RS Stock No. 170-1528
Mfr. Part No.B66306C1010T001
BrandEPCOS
SGD1.196
Each (On a Reel of 345)
units
SMD Coil Former E 13/7/4 Core - 10 GFR Liquid Crystal Polymer - 13mm 13mm +155°C
RS Stock No. 125-3677
Mfr. Part No.B66364B1016T001
BrandEPCOS
SGD2.882
Each (In a Pack of 5)
units
Horizontal Coil Former ETD 39/20/13 Core - 16 GFR Polyterephthalate - 44.6mm 46.8mm +155°C
RS Stock No. 170-1465
Mfr. Part No.B65848D1010D001
BrandEPCOS
SGD2.359
Each (On a Reel of 200)
units
Horizontal Coil Former EP 20 Core - 10 GFR Thermosetting Plastic - 26.8mm 22.8mm +155°C
RS Stock No. 212-5088
Mfr. Part No.B65685B1016T001
BrandEPCOS
SGD12.21
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. 170-1582
Mfr. Part No.B66414B6008T001
BrandEPCOS
SGD1.146
Each (On a Reel of 960)
units
SMD Coil Former EFD 15/8/5 Core - 8 GFR Liquid Crystal Polymer - 15mm 16mm +155°C
RS Stock No. 125-3341
Mfr. Part No.B65542B0000T001
BrandEPCOS
SGD0.253
Each (In a Pack of 50)
units
Vertical Coil Former P 14 x 8 Core - - GFR Polyterephthalate - - 7.1 (Dia.)mm +155°C
RS Stock No. 212-6722
Mfr. Part No.B65816C1512T001
BrandEPCOS
SGD2.578
Each (In a Pack of 5)
units
RM 12 Coil Former B65815 38.4 x 28.4 x 23.4mm 12 GFR Polyterephthalate 23.4mm 38.4mm 28.4mm +155°C
RS Stock No. 161-7768
Mfr. Part No.FS-2E-7064-20
BrandBlock
SGD20.556
Each (In a Bag of 5)
units
E 70 FS-1E-7064-00 - - Ryton R-4 - - - -
RS Stock No. 167-8512
Mfr. Part No.B65814C1512T001
BrandEPCOS
SGD1.382
Each (In a Box of 200)
units
RM 10 Coil Former B65813 33 x 23.3 x 18.75mm 12 GFR Polyterephthalate 18.75mm 33mm 23.3mm +155°C
RS Stock No. 170-1571
Mfr. Part No.B66388A2000T001
BrandEPCOS
SGD6.606
Each (On a Reel of 9)
units
Horizontal Coil Former E 65/32/27 Core - - Polyphenylene Sulphide - 44mm 79mm +155°C
RS Stock No. 167-8204
Mfr. Part No.B66396W1022T001
BrandEPCOS
SGD2.849
Each (In a Box of 75)
units
ETD 54 B66395 61.6 x 46 x 61.4mm 22 GFR Polyterephthalate 61.4mm 61.6mm 46mm -
RS Stock No. 162-0185
Mfr. Part No.B65685B1016T001
BrandEPCOS
SGD10.398
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. 125-3415
Mfr. Part No.B65844W1010D001
BrandEPCOS
SGD1.362
Each (In a Pack of 10)
units
Horizontal Coil Former EP/EPO 13 Core - 10 GFR Thermosetting Plastic - 15.9mm 14.8mm +180°C
RS Stock No. 125-3619
Mfr. Part No.B66230A1114T001
BrandEPCOS
SGD3.312
Each (In a Pack of 5)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C
RS Stock No. 170-1472
Mfr. Part No.B65878E1012D001
BrandEPCOS
SGD0.995
Each (On a Reel of 144)
units
Vertical Coil Former PQ 26 x 25 Core - 12 GFR Thermosetting Plastic - 26.5mm 29.3mm +180°C
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RM 14 coil formers from EPCOS are constructed ...
Description:
RM 14 coil formers from EPCOS are constructed from black GFR thermosetting plastic, which meets IEC 60085:H standards. The B65888C1512T001 version is suitable for power applications and has a GFR polyterephthalate construction meeting IEC60085:F. Both materials meet the UL94 V-0 ...
B66414W EFD 15/8/5 coil formers from EPCOS are ...
Description:
B66414W EFD 15/8/5 coil formers from EPCOS are constructed from GRF thermosetting plastic and feature 8 squared pins. They meet the UL 94 V-0 standard and have an insulation class of IEC 60085:H with a maximum operating temperature of +180°C. ...
FS-2E series size 55/28/21 ferrite transformer bobbins with ...
Description:
FS-2E series size 55/28/21 ferrite transformer bobbins with insulation according to class B and flammability to UL 94 V-0. These ferrite transformer bobbins are available as horizontal (stock number 840-7294) or vertical (stock number 840-7291) mount. Typical applications for these ...
FS-2E series size 65/32/27 ferrite transformer bobbin with ...
Description:
FS-2E series size 65/32/27 ferrite transformer bobbin with insulation according to class B and flammability to UL 94 V-0. This ferrite transformer bobbins is horizontal mounting. Typical applications for this ferrite bobbin includes transformers and inductors in switch mode power ...