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. 125-3385
Mfr. Part No.B65808N1006D002
BrandEPCOS
$1.489
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
$4.328
Each (In a Bag of 5)
units
ETD 29 FS-2ETD-2910-00 - 14 T375J - - - -
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. 125-3619
Mfr. Part No.B66230A1114T001
BrandEPCOS
$1.832
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. 125-3616
Mfr. Part No.B66208W1010T001
BrandEPCOS
$1.422
Each (In a Pack of 10)
units
Vertical Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 17.3mm +155°C
RS Stock No. 212-6687
Mfr. Part No.B65816N1012D001
BrandEPCOS
$2.17
Each (In a Pack of 5)
units
RM 12 Coil Former B65815 - 12 GFR Thermosetting Plastic 18mm - - +180°C
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. 170-7480
Mfr. Part No.FS-2E-4215-10
BrandBlock
$7.538
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 125-3613
Mfr. Part No.B66206W1110T001
BrandEPCOS
$1.904
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. 161-7774
Mfr. Part No.FS-2E-3611-20
BrandBlock
$3.334
Each (In a Bag of 5)
units
E 36 FS-1E-36 - 16 - - - - -
RS Stock No. 125-3375
Mfr. Part No.B65806N1106D001
BrandEPCOS
$1.455
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. 170-1564
Mfr. Part No.B66364W1016T001
BrandEPCOS
$1.695
Each (On a Reel of 100)
units
Vertical Coil Former ETD 39/20/13 Core - 16 GFR Polyterephthalate - 44.6mm 46.8mm +155°C
RS Stock No. 170-7490
Mfr. Part No.FS-2EFD-3009-30
BrandBlock
$7.48
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 125-3623
Mfr. Part No.B66232J1112T001
BrandEPCOS
$1.932
Each (In a Pack of 10)
units
Vertical Coil Former E 30/15/7 Core - 12 GFR Polyterephthalate - 35.4mm 19.2mm +155°C
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. 170-1563
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. 170-1499
Mfr. Part No.B66208W1010T001
BrandEPCOS
$0.926
Each (On a Reel of 450)
units
Vertical Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 17.3mm +155°C
RS Stock No. 125-3363
Mfr. Part No.B65714K1020T001
BrandEPCOS
$16.36
Each
units
Vertical Coil Former PM 87 x 70 Core - 20 GFR Polyterephthalate - 87.6mm 66.2mm +180°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. 170-1412
Mfr. Part No.B65714K1020T001
BrandEPCOS
$17.74
Each (On a Reel of 8)
units
Vertical Coil Former PM 87 x 70 Core - 20 GFR Polyterephthalate - 87.6mm 66.2mm +180°C
Related Products
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 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 PQ32/20 and P32/30 Vertical coil formers are ...
Description:
EPCOS PQ32/20 and P32/30 Vertical coil formers are made from GFR thermosetting plastic ul 94 V-0 insulation class to IEC 60085 Maximum operating temperature 180°C. Solderability to IEC 60068-2-20.
B66364 series ETD 39/20/13 coil formers from EPCOS ...
Description:
B66364 series ETD 39/20/13 coil formers from EPCOS are constructed from GFR polyterephthalate and are suitable for use with B66363 transformer ferrite cores B66364 coil formers have 16 pins. They meet the UL 94 V-0 standard and have an insulation ...