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. 125-3394
Mfr. Part No.B65814N1012D001
BrandEPCOS
$2.138
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. 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. 212-9614
Mfr. Part No.B66242J1000R001
BrandEPCOS
$5.00
Each
units
E 42 B66325, B66329 29.2 x 35 x 37.5mm 8 - 37.5mm 29.2mm 35mm -
RS Stock No. 647-9496
Mfr. Part No.B66396W1022T001
BrandEPCOS
$4.43
Each
units
ETD 54 B66395 61.6 x 46 x 61.4mm 22 GFR Polyterephthalate 61.4mm 61.6mm 46mm -
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. 125-3403
Mfr. Part No.B65820W1008D001
BrandEPCOS
$1.732
Each (In a Pack of 10)
units
Vertical Coil Former RM 7 Core - 8 GFR Thermosetting Plastic - - 14.65 (Dia.)mm +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. 125-3670
Mfr. Part No.B66359X1014T001
BrandEPCOS
$2.61
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. 125-3405
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. 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. 170-1492
Mfr. Part No.B66202B1108T001
BrandEPCOS
$1.408
Each (On a Reel of 1725)
units
Horizontal Coil Former E 13/7/4 Core - 8 GFR Polyterephthalate - 14.2mm 16.2mm +155°C
RS Stock No. 840-7336
Mfr. Part No.FS-2EFD-3009-30
BrandBlock
$8.21
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 125-3390
Mfr. Part No.B65812N1012D001
BrandEPCOS
$1.762
Each (In a Pack of 5)
units
Vertical Coil Former RM 8 Core - 12 GFR Thermosetting Plastic - - 16.9 (Dia.)mm +180°C
RS Stock No. 161-7768
Mfr. Part No.FS-2E-7064-20
BrandBlock
$17.23
Each (In a Bag of 5)
units
E 70 FS-1E-7064-00 - - Ryton R-4 - - - -
RS Stock No. 170-1505
Mfr. Part No.B66232B1114T001
BrandEPCOS
$1.404
Each (On a Reel of 213)
units
Horizontal Coil Former E 30/15/7 Core - 14 GFR Polyterephthalate - 35.4mm 31.4mm +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. 125-3423
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. 170-1484
Mfr. Part No.B65884E0012D001
BrandEPCOS
$1.90
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. 840-7276
Mfr. Part No.FS-2E-4215-10
BrandBlock
$7.02
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
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.
From Epcos, these ETD ferrite cores conform to ...
Description:
From Epcos, these ETD ferrite cores conform to IEC 51(CO)276 and are typically used with switch-mode power supply transformers ETD shape ferrite cores offer a round winding post for minimum winding resistance, and are optimized for power transformer efficiency.
EPCOS B65822 RM5 Coil Formers made from GFR ...
Description:
EPCOS B65822 RM5 Coil Formers made from GFR Liquid Crystal Polymer UL 94 V-0 insulation class to IEC 60085, Solderability to IEC 60058-2-58 Maximum operating temperature 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.