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. 653-1207
Mfr. Part No.B66368B1020T001
BrandEPCOS
PHP142.54
Each
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -
RS Stock No. 167-0150
Mfr. Part No.B66368B1020T001
BrandEPCOS
PHP113.733
Each (In a Box of 60)
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -
RS Stock No. 167-8512
Mfr. Part No.B65814C1512T001
BrandEPCOS
PHP68.545
Each (In a Box of 200)
units
RM 10 Coil Former B65813 33 x 23.3 x 18.75mm 12 GFR Polyterephthalate 18.75mm 33mm 23.3mm +155°C
RS Stock No. 647-9238
Mfr. Part No.B65814C1512T001
BrandEPCOS
PHP69.40
Each (In a Pack of 5)
units
RM 10 Coil Former B65813 33 x 23.3 x 18.75mm 12 GFR Polyterephthalate 18.75mm 33mm 23.3mm +155°C
RS Stock No. 170-7491
Mfr. Part No.FS-2ETD-2910-10
BrandBlock
PHP142.40
Each (In a Bag of 5)
units
ETD 29 FS-2ETD-2910-00 - 14 T375J - - - -
RS Stock No. 840-7339
Mfr. Part No.FS-2ETD-2910-10
BrandBlock
PHP135.87
Each
units
ETD 29 FS-2ETD-2910-00 - 14 T375J - - - -
RS Stock No. 167-0500
Mfr. Part No.B66418W1008D001
BrandEPCOS
PHP48.054
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. 647-9193
Mfr. Part No.B65812C1512T001
BrandEPCOS
PHP67.298
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. 167-8224
Mfr. Part No.B66362B1014T001
BrandEPCOS
PHP73.07
Each (In a Box of 100)
units
ETD 34/17/11 Coil Former B66361 39.6 x 41.8 x 33.1mm 14 GFR Polyterephthalate 33.1mm 39.6mm 41.8mm +155°C
RS Stock No. 483-3595
Mfr. Part No.B66362B1014T001
BrandEPCOS
PHP105.226
Each (In a Pack of 5)
units
ETD 34/17/11 Coil Former B66361 39.6 x 41.8 x 33.1mm 14 GFR Polyterephthalate 33.1mm 39.6mm 41.8mm +155°C
RS Stock No. 162-0190
Mfr. Part No.B65812C1512T001
BrandEPCOS
PHP32.245
Each (In a Box of 200)
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. 647-9553
Mfr. Part No.B66418W1008D001
BrandEPCOS
PHP62.632
Each (In a Pack of 5)
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
New
RS Stock No. 172-4814
Mfr. Part No.FS-2E-1605-20
BrandBlock
PHP109.00
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 161-7774
Mfr. Part No.FS-2E-3611-20
BrandBlock
PHP109.60
Each (In a Bag of 5)
units
E 36 FS-1E-36 - 16 - - - - -
RS Stock No. 125-3366
Mfr. Part No.B65734B1000T001
BrandEPCOS
PHP489.16
Each
units
Vertical Coil Former PM 114 x 93 Core - - Polyphenylene Sulphide - - 87 (Dia.)mm +155°C
RS Stock No. 170-1415
Mfr. Part No.B65734B1000T001
BrandEPCOS
PHP631.00
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. 212-5101
Mfr. Part No.B65687A1018T001
BrandEPCOS
PHP334.53
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. 840-7241
Mfr. Part No.FS-2E-1605-20
BrandBlock
PHP115.97
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 174-1588
Mfr. Part No.EFD15/8/5-3F3
BrandFERROXCUBE
PHP65.15
Each
units
EFD Core Ferrites 15 x4.65 x 7.5mm 8 GFR Phenolformaldehyde 7.5mm 15mm 4.65mm +180°C
RS Stock No. 167-8580
Mfr. Part No.B65687A1018T001
BrandEPCOS
PHP384.80
Each (In a Box of 10)
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
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