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. 125-3624
Mfr. Part No.B66252B0000M001
BrandEPCOS
$7.60
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. 170-1507
Mfr. Part No.B66252B0000M001
BrandEPCOS
$4.219
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. 170-1385
Mfr. Part No.B65522B0000T001
BrandEPCOS
$0.291
Each (On a Reel of 500)
units
Vertical Coil Former P 9 x 5 Core - - GFR Polyterephthalate - - 7.4 (Dia.)mm +155°C
RS Stock No. 170-1569
Mfr. Part No.B66372A2000T001
BrandEPCOS
$8.679
Each (On a Reel of 30)
units
Horizontal Coil Former E 70/33/32 Core - - Polyphenylene Sulphide - 46.5mm 89mm +155°C
RS Stock No. 125-3345
Mfr. Part No.B65612B0000T001
BrandEPCOS
$1.529
Each (In a Pack of 20)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C
RS Stock No. 125-3330
Mfr. Part No.B65522B0000T001
BrandEPCOS
$0.561
Each (In a Pack of 50)
units
Vertical Coil Former P 9 x 5 Core - - GFR Polyterephthalate - - 7.4 (Dia.)mm +155°C
RS Stock No. 125-3682
Mfr. Part No.B66372A2000T001
BrandEPCOS
$14.05
Each
units
Horizontal Coil Former E 70/33/32 Core - - Polyphenylene Sulphide - 46.5mm 89mm +155°C
RS Stock No. 170-1399
Mfr. Part No.B65612B0000T001
BrandEPCOS
$1.078
Each (On a Reel of 50)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C
RS Stock No. 125-3351
Mfr. Part No.B65652B0000T001
BrandEPCOS
$0.408
Each (In a Pack of 50)
units
Vertical Coil Former P 18 x 11 Core - - GFR Polyterephthalate - - 14.8 (Dia.)mm +155°C
RS Stock No. 170-1404
Mfr. Part No.B65652B0000T001
BrandEPCOS
$0.24
Each (On a Reel of 500)
units
Vertical Coil Former P 18 x 11 Core - - GFR Polyterephthalate - - 14.8 (Dia.)mm +155°C
RS Stock No. 170-1415
Mfr. Part No.B65734B1000T001
BrandEPCOS
$21.485
Each (On a Reel of 2)
units
Vertical Coil Former PM 114 x 93 Core - - Polyphenylene Sulphide - - 87 (Dia.)mm +155°C
RS Stock No. 125-3366
Mfr. Part No.B65734B1000T001
BrandEPCOS
$21.48
Each
units
Vertical Coil Former PM 114 x 93 Core - - Polyphenylene Sulphide - - 87 (Dia.)mm +155°C
RS Stock No. 173-1176
Mfr. Part No.B65844S2000X000
BrandEPCOS
$1.441
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. 170-1393
Mfr. Part No.B65527B1008T001
BrandEPCOS
$0.925
Each (On a Reel of 1000)
units
SMD Coil Former ER 9.5/5 Core - 8 GFR Liquid Crystal Polymer - 7.6mm 8.2mm +155°C
RS Stock No. 167-0500
Mfr. Part No.B66418W1008D001
BrandEPCOS
$1.111
Each (In a Box of 630)
units
EFD 20/10/7 Coil Former B66417 20 x 20.3 x 10.4mm 8 GFR Thermosetting Plastic 10.4mm 20mm 20.3mm +180°C
RS Stock No. 125-3414
Mfr. Part No.B65844S2000X000
BrandEPCOS
$2.288
Each (In a Pack of 10)
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. 212-9620
Mfr. Part No.B66243B1018T001
BrandEPCOS
$5.52
Each
units
E 42/21/20 Coil Former B66329 - 18 GFR Polyterephthalate 50.9mm - 37.2mm +155°C
RS Stock No. 840-7308
Mfr. Part No.FS-2E-6527-20
BrandBlock
$7.58
Each
units
E 65 FS-1E-6527-00 - 16 Rynite FR530(L) - - - -
RS Stock No. 125-3339
Mfr. Part No.B65527B1008T001
BrandEPCOS
$1.903
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. 212-9614
Mfr. Part No.B66242J1000R001
BrandEPCOS
$7.92
Each
units
E 42 B66325, B66329 29.2 x 35 x 37.5mm 8 - 37.5mm 29.2mm 35mm -
Related Products
EPCOS B65820 RM7 coil former is made from ...
Description:
EPCOS B65820 RM7 coil former is made from GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085). The Coil former has squared pins, solderability to IEC 60068-2. Maximum operating temperature is 155°C.
EPCOS B65844 EP13 coil formers which have square ...
Description:
EPCOS B65844 EP13 coil formers which have square pins. Made from GFR thermosetting plastic, UL94 V-0 Insulation class to IEC60085 . The coil formers have a maximum operating temperature of 180°C. Solderability to IECi60068-2-20.
EPCOS E13/7/4 Coil formers made from polyterethalate UL ...
Description:
EPCOS E13/7/4 Coil formers made from polyterethalate UL 94 V-0 Insulation class to IEC60085.Maximum operating temperature 155°C solderability to IEC 60068-2-58 The SMD coil former with gullwing terminals is made from GFR liquid crystal polymer.
FS-2E series size 70/33/32 ferrite transformer bobbin with ...
Description:
FS-2E series size 70/33/32 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 ...