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. 170-1457
Mfr. Part No.B65822J1008T001
BrandEPCOS
$1.336
Each (On a Reel of 500)
units
SMD Coil Former RM 5 Core - 8 GFR Liquid Crystal Polymer - 13.5mm 15mm +155°C
RS Stock No. 125-3595
Mfr. Part No.B65880E0012D001
BrandEPCOS
$1.892
Each (In a Pack of 5)
units
Vertical Coil Former PQ 32 x 20 Core - 12 GFR Thermosetting Plastic - 32mm 34mm +180°C
RS Stock No. 170-1409
Mfr. Part No.B65672B0000T001
BrandEPCOS
$0.494
Each (On a Reel of 200)
units
Vertical Coil Former P 26 x 16 Core - - GFR Polyterephthalate - - 20.9 (Dia.)mm +155°C
RS Stock No. 170-1465
Mfr. Part No.B65848D1010D001
BrandEPCOS
$2.362
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. 125-3624
Mfr. Part No.B66252B0000M001
BrandEPCOS
$6.295
Each (In a Pack of 2)
units
E 55 - 37 x 44 x 35.4mm 14 GFR 6-Polyamide 44mm 37mm 35.4mm +155°C
RS Stock No. 170-1495
Mfr. Part No.B66206C1012T001
BrandEPCOS
$0.946
Each (On a Reel of 735)
units
Horizontal Coil Former E 20/10/6 Core - 12 GFR Polyterephthalate - 21.5mm 23.5mm +155°C
RS Stock No. 173-1176
Mfr. Part No.B65844S2000X000
BrandEPCOS
$1.31
Each (In a Bag of 500)
units
Mounting Assembly Kit EP 13 Core - - Bronze (Clamp), Cold Rolled Steel (Yoke) - 15 (Clamp) mm, 16 (Yoke) mm 13 (Clamp) mm, 14 (Yoke) mm -
RS Stock No. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
$3.455
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. 125-3622
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
RS Stock No. 125-3417
Mfr. Part No.B65848D1010D001
BrandEPCOS
$3.96
Each (In a Pack of 2)
units
Horizontal Coil Former EP 20 Core - 10 GFR Thermosetting Plastic - 26.8mm 22.8mm +155°C
RS Stock No. 647-9092
Mfr. Part No.B65685A1000T001
BrandEPCOS
$5.24
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. 170-1456
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. 161-7777
Mfr. Part No.FS-2E-2507-20
BrandBlock
$2.016
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 840-7266
Mfr. Part No.FS-2E-3007-20
BrandBlock
$3.66
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 125-3355
Mfr. Part No.B65662B0000T001
BrandEPCOS
$0.392
Each (In a Pack of 50)
units
Vertical Coil Former P 22 x 13 Core - - GFR Polyterephthalate - - 17.8 (Dia.)mm +155°C
RS Stock No. 170-1582
Mfr. Part No.B66414B6008T001
BrandEPCOS
$1.147
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. 125-3603
Mfr. Part No.B65888N1012D001
BrandEPCOS
$1.816
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. 125-3609
Mfr. Part No.B66202B1108T001
BrandEPCOS
$1.613
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. 125-3337
Mfr. Part No.B65526B1010T001
BrandEPCOS
$1.718
Each (In a Pack of 20)
units
SMD Coil Former ER 11/5 Core - 10 GFR Liquid Crystal Polymer - 8.6mm 10.5mm +155°C
RS Stock No. 170-1393
Mfr. Part No.B65527B1008T001
BrandEPCOS
$823.80
1 Reel of 1000
Reel(s)
SMD Coil Former ER 9.5/5 Core - 8 GFR Liquid Crystal Polymer - 7.6mm 8.2mm +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 ...