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. 170-1435
Mfr. Part No.B65808N1006D002
BrandEPCOS
$0.938
Each (On a Reel of 500)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 170-1407
Mfr. Part No.B65662B0000T001
BrandEPCOS
$0.351
Each (On a Reel of 400)
units
Vertical Coil Former P 22 x 13 Core - - GFR Polyterephthalate - - 17.8 (Dia.)mm +155°C
RS Stock No. 170-1494
Mfr. Part No.B66206B1110T001
BrandEPCOS
$1.132
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. 170-1455
Mfr. Part No.B65820W1008D001
BrandEPCOS
$1.14
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. 162-0185
Mfr. Part No.B65685B1016T001
BrandEPCOS
$7.163
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. 125-3405
Mfr. Part No.B65822J1008T001
BrandEPCOS
$2.36
Each (In a Pack of 10)
units
SMD Coil Former RM 5 Core - 8 GFR Liquid Crystal Polymer - 13.5mm 15mm +155°C
RS Stock No. 170-1533
Mfr. Part No.B66308B1108T001
BrandEPCOS
$920.10
1 Reel of 1000
Reel(s)
Horizontal Coil Former E 16/8/5 Core - 8 GFR Polyterephthalate - 17.8mm 20mm +155°C
RS Stock No. 170-1563
Mfr. Part No.B66364B1016T001
BrandEPCOS
$1.639
Each (On a Reel of 100)
units
Horizontal Coil Former ETD 39/20/13 Core - 16 GFR Polyterephthalate - 44.6mm 46.8mm +155°C
RS Stock No. 170-7482
Mfr. Part No.FS-2E-4215-20
BrandBlock
$7.312
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 170-1583
Mfr. Part No.B66414W1008D001
BrandEPCOS
$0.946
Each (On a Reel of 960)
units
Horizontal Coil Former EFD 15/8/5 Core - 8 GFR Thermosetting Plastic - 15mm 16.5mm +180°C
RS Stock No. 125-3423
Mfr. Part No.B65878E1012D001
BrandEPCOS
$1.354
Each (In a Pack of 10)
units
Vertical Coil Former PQ 26 x 25 Core - 12 GFR Thermosetting Plastic - 26.5mm 29.3mm +180°C
RS Stock No. 125-3670
Mfr. Part No.B66359X1014T001
BrandEPCOS
$2.384
Each (In a Pack of 5)
units
Vertical Coil Former ETD 29/16/10 Core - 14 GFR Polyterephthalate - - 35.2 (Dia.)mm +180°C
RS Stock No. 125-3358
Mfr. Part No.B65672B0000T001
BrandEPCOS
$0.441
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. 840-7339
Mfr. Part No.FS-2ETD-2910-10
BrandBlock
$6.84
Each
units
ETD 29 FS-2ETD-2910-00 - 14 T375J - - - -
RS Stock No. 170-1426
Mfr. Part No.B65806N1106D001
BrandEPCOS
$0.873
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. 125-3615
Mfr. Part No.B66208B1110T001
BrandEPCOS
$1.15
Each (In a Pack of 10)
units
Horizontal Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 28mm +155°C
RS Stock No. 125-3647
Mfr. Part No.B66308B1108T001
BrandEPCOS
$1.46
Each (In a Pack of 10)
units
Horizontal Coil Former E 16/8/5 Core - 8 GFR Polyterephthalate - 17.8mm 20mm +155°C
RS Stock No. 647-9193
Mfr. Part No.B65812C1512T001
BrandEPCOS
$2.10
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. 170-1456
Mfr. Part No.B65822F1008T001
BrandEPCOS
$1.189
Each (On a Reel of 500)
units
SMD Coil Former RM 5 Core - 8 GFR Liquid Crystal Polymer - 13.4mm 14.2mm +155°C
RS Stock No. 125-3622
Mfr. Part No.B66232B1114T001
BrandEPCOS
$1.724
Each (In a Pack of 10)
units
Horizontal Coil Former E 30/15/7 Core - 14 GFR Polyterephthalate - 35.4mm 31.4mm +155°C
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EPCOS Coil former with gullwing terminals is made ...
Description:
EPCOS Coil former with gullwing terminals is made from GFR Liquid Crystal Polymer UL94 V-0 insulation class to 60085. Maximum operating temperature is 155°C. Solderability to IEC 60068-2-58.
EPCOS N65848 EP20 horizontal coil former is made ...
Description:
EPCOS N65848 EP20 horizontal coil former is made from GFR thermosetting plastic UL94 V-0 insulation class 60085. Maximum operating temperature 155°C. Solderability to IEC60068-2-20.This coil former has squared pins.
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 ...