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. 170-1507
Mfr. Part No.B66252B0000M001
BrandEPCOS
SGD3.728
Each (On a Reel of 100)
units
E 55 - 37 x 44 x 35.4mm 14 GFR 6-Polyamide 44mm 37mm 35.4mm +155°C
RS Stock No. 125-3609
Mfr. Part No.B66202B1108T001
BrandEPCOS
SGD1.725
Each (In a Pack of 10)
units
Horizontal Coil Former E 13/7/4 Core - 8 GFR Polyterephthalate - 14.2mm 16.2mm +155°C
RS Stock No. 170-1490
Mfr. Part No.B65982E0012D001
BrandEPCOS
SGD2.35
Each (On a Reel of 72)
units
Vertical Coil Former PQ 50 x 50 Core - 12 PMC Thermosetting Plastic - 45.72mm 51mm -
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. 647-9193
Mfr. Part No.B65812C1512T001
BrandEPCOS
SGD2.098
Each (In a Pack of 5)
units
RM 8 Coil Former B65811 23.5 x 23.5 x 16.2mm 12 GFR Polyterephthalate 16.2mm 23.5mm 23.5mm +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. 167-8478
Mfr. Part No.B65888C1512T001
BrandEPCOS
SGD1.829
Each (In a Box of 60)
units
RM 14 Coil Former B65887 41 x 31.4 x 29.3mm 12 GFR Polyterephthalate 29.3mm 41mm 31.4mm +155°C
RS Stock No. 125-3607
Mfr. Part No.B65982E0012D001
BrandEPCOS
SGD3.734
Each (In a Pack of 5)
units
Vertical Coil Former PQ 50 x 50 Core - 12 PMC Thermosetting Plastic - 45.72mm 51mm -
RS Stock No. 647-9496
Mfr. Part No.B66396W1022T001
BrandEPCOS
SGD4.28
Each
units
ETD 54 B66395 61.6 x 46 x 61.4mm 22 GFR Polyterephthalate 61.4mm 61.6mm 46mm -
RS Stock No. 125-3394
Mfr. Part No.B65814N1012D001
BrandEPCOS
SGD2.41
Each (In a Pack of 5)
units
Vertical Coil Former RM 10 Core - 12 GFR Thermosetting Plastic - - 21 (Dia.)mm +180°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. 170-1426
Mfr. Part No.B65806N1106D001
BrandEPCOS
SGD0.872
Each (On a Reel of 500)
units
Vertical Coil Former RM 5 Core - 6 GFR Thermosetting Plastic - - 10.1 (Dia.)mm +155°C
RS Stock No. 170-1484
Mfr. Part No.B65884E0012D001
BrandEPCOS
SGD1.91
Each (On a Reel of 72)
units
Vertical Coil Former PQ 40 x 40 Core - 12 PMC Thermosetting Plastic - 38.1mm 40mm -
RS Stock No. 170-7482
Mfr. Part No.FS-2E-4215-20
BrandBlock
SGD7.344
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 125-3382
Mfr. Part No.B65808N1004D001
BrandEPCOS
SGD1.637
Each (In a Pack of 10)
units
Vertical Coil Former RM 6 Core - 4 GFR Thermosetting Plastic - - 7.45 (Dia.)mm +180°C
RS Stock No. 125-3694
Mfr. Part No.B66414W1008D001
BrandEPCOS
SGD1.604
Each (In a Pack of 10)
units
Horizontal Coil Former EFD 15/8/5 Core - 8 GFR Thermosetting Plastic - 15mm 16.5mm +180°C
RS Stock No. 125-3383
Mfr. Part No.B65808N1006D001
BrandEPCOS
SGD1.509
Each (In a Pack of 10)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 170-7491
Mfr. Part No.FS-2ETD-2910-10
BrandBlock
SGD4.348
Each (In a Bag of 5)
units
ETD 29 FS-2ETD-2910-00 - 14 T375J - - - -
RS Stock No. 170-1502
Mfr. Part No.B66230A1114T001
BrandEPCOS
SGD1.813
Each (On a Reel of 240)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C
RS Stock No. 125-3682
Mfr. Part No.B66372A2000T001
BrandEPCOS
SGD11.76
Each
units
Horizontal Coil Former E 70/33/32 Core - - Polyphenylene Sulphide - 46.5mm 89mm +155°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 ...
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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 ...