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. 162-0190
Mfr. Part No.B65812C1512T001
BrandEPCOS
HK$6.922
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. 647-9193
Mfr. Part No.B65812C1512T001
BrandEPCOS
HK$13.766
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. 174-1588
Mfr. Part No.EFD15/8/5-3F3
BrandFERROXCUBE
HK$11.15
Each
units
EFD Core Ferrites 15 x4.65 x 7.5mm 8 GFR Phenolformaldehyde 7.5mm 15mm 4.65mm +180°C
RS Stock No. 647-9143
Mfr. Part No.B65808E1508T001
BrandEPCOS
HK$11.134
Each (In a Pack of 5)
units
RM 6 Coil Former B65807 18.4 x 16 x 12.65mm 8 GFR Polyterephthalate 12.65mm 18.4mm 16mm +155°C
RS Stock No. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
HK$29.01
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. 167-8580
Mfr. Part No.B65687A1018T001
BrandEPCOS
HK$62.919
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
RS Stock No. 840-7301
Mfr. Part No.FS-2E-7064-20
BrandBlock
HK$207.98
Each
units
E 70 FS-1E-7064-00 - - Ryton R-4 - - - -
RS Stock No. 647-9238
Mfr. Part No.B65814C1512T001
BrandEPCOS
HK$15.524
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. 170-1555
Mfr. Part No.B66359W1013T001
BrandEPCOS
HK$7.504
Each (On a Reel of 100)
units
Horizontal Coil Former ETD 29/16/10 Core - 13 GFR Polyterephthalate - 35.3mm 35.2mm +155°C
RS Stock No. 647-9597
Mfr. Part No.B66422W1010D001
BrandEPCOS
HK$11.72
Each (In a Pack of 5)
units
EFD 25/13/9 Coil Former B66421 25 x 26 x 12.9mm 10 GFR Thermosetting Plastic 12.9mm 25mm 26mm +180°C
RS Stock No. 125-3615
Mfr. Part No.B66208B1110T001
BrandEPCOS
HK$8.436
Each (In a Pack of 10)
units
Horizontal Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 28mm +155°C
RS Stock No. 161-7768
Mfr. Part No.FS-2E-7064-20
BrandBlock
HK$121.218
Each (In a Bag of 5)
units
E 70 FS-1E-7064-00 - - Ryton R-4 - - - -
RS Stock No. 170-1457
Mfr. Part No.B65822J1008T001
BrandEPCOS
HK$7.80
Each (On a Reel of 500)
units
SMD Coil Former RM 5 Core - 8 GFR Liquid Crystal Polymer - 13.5mm 15mm +155°C
RS Stock No. 167-8478
Mfr. Part No.B65888C1512T001
BrandEPCOS
HK$10.44
Each (In a Box of 60)
units
RM 14 Coil Former B65887 41 x 31.4 x 29.3mm 12 GFR Polyterephthalate 29.3mm 41mm 31.4mm +155°C
RS Stock No. 125-3385
Mfr. Part No.B65808N1006D002
BrandEPCOS
HK$8.776
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. 167-8503
Mfr. Part No.B65647B1014T001
BrandEPCOS
HK$32.756
Each (In a Box of 30)
units
PM Ferrites 65.5 x 38.5 x 38mm 14 GFR Polyterephthalate - 65.5mm 38.5mm -
RS Stock No. 125-3603
Mfr. Part No.B65888N1012D001
BrandEPCOS
HK$15.832
Each (In a Pack of 5)
units
Vertical Coil Former RM 14 Core - 12 GFR Thermosetting Plastic - - 28.8 (Dia.)mm +180°C
RS Stock No. 170-1395
Mfr. Part No.B65542B0000T001
BrandEPCOS
HK$0.766
Each (On a Reel of 1000)
units
Vertical Coil Former P 14 x 8 Core - - GFR Polyterephthalate - - 7.1 (Dia.)mm +155°C
RS Stock No. 125-3417
Mfr. Part No.B65848D1010D001
BrandEPCOS
HK$24.26
Each (In a Pack of 2)
units
Horizontal Coil Former EP 20 Core - 10 GFR Thermosetting Plastic - 26.8mm 22.8mm +155°C
RS Stock No. 212-5088
Mfr. Part No.B65685B1016T001
BrandEPCOS
HK$72.89
Each
units
PM 62/49 Coil Former B65684 75.5 x 48.5 x 48mm 16 GFR Polyterephthalate 48mm 75.5mm 48.5mm +155°C
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