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. 212-5038
Mfr. Part No.B65647B1014T001
BrandEPCOS
$8.78
Each
units
PM Ferrites 65.5 x 38.5 x 38mm 14 GFR Polyterephthalate - 65.5mm 38.5mm -
RS Stock No. 167-8169
Mfr. Part No.B66243B1018T001
BrandEPCOS
$3.136
Each (In a Box of 60)
units
E 42/21/20 Coil Former B66329 35 x 50.9 x 28.2mm 18 GFR Polyterephthalate 50.9mm 40mm 37.2mm +155°C
RS Stock No. 170-7496
Mfr. Part No.FS-2ETD-5922-20
BrandBlock
$7.424
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
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. 170-1556
Mfr. Part No.B66359X1014T001
BrandEPCOS
$1.484
Each (On a Reel of 100)
units
Vertical Coil Former ETD 29/16/10 Core - 14 GFR Polyterephthalate - - 35.2 (Dia.)mm +180°C
RS Stock No. 840-7285
Mfr. Part No.FS-2E-4215-20
BrandBlock
$8.01
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
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. 125-3612
Mfr. Part No.B66206C1012T001
BrandEPCOS
$1.446
Each (In a Pack of 10)
units
Horizontal Coil Former E 20/10/6 Core - 12 GFR Polyterephthalate - 21.5mm 23.5mm +155°C
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. 125-3330
Mfr. Part No.B65522B0000T001
BrandEPCOS
$0.331
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. 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. 170-1444
Mfr. Part No.B65814N1012D001
BrandEPCOS
$1.349
Each (On a Reel of 200)
units
Vertical Coil Former RM 10 Core - 12 GFR Thermosetting Plastic - - 21 (Dia.)mm +180°C
RS Stock No. 212-5101
Mfr. Part No.B65687A1018T001
BrandEPCOS
$12.50
Each
units
PM 74/59 Coil Former B65686 85.5 x 57.3 x 57.8mm 18 GFR Polyterephthalate 57.8mm 85.5mm 57.3mm +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. 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. 170-1478
Mfr. Part No.B65880E0012D001
BrandEPCOS
$1.11
Each (On a Reel of 168)
units
Vertical Coil Former PQ 32 x 20 Core - 12 GFR Thermosetting Plastic - 32mm 34mm +180°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. 125-3595
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. 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. 125-3643
Mfr. Part No.B66306C1010T001
BrandEPCOS
$1.868
Each (In a Pack of 10)
units
SMD Coil Former E 13/7/4 Core - 10 GFR Liquid Crystal Polymer - 13mm 13mm +155°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 ...