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. 647-9193
Mfr. Part No.B65812C1512T001
BrandEPCOS
HK$14.042
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. 162-0190
Mfr. Part No.B65812C1512T001
BrandEPCOS
HK$6.741
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. 167-8498
Mfr. Part No.B65808E1508T001
BrandEPCOS
HK$5.861
Each (In a Box of 500)
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. 170-1391
Mfr. Part No.B65526B1010T001
BrandEPCOS
HK$6.261
Each (On a Reel of 1000)
units
SMD Coil Former ER 11/5 Core - 10 GFR Liquid Crystal Polymer - 8.6mm 10.5mm +155°C
RS Stock No. 170-1435
Mfr. Part No.B65808N1006D002
BrandEPCOS
HK$5.016
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. 170-1490
Mfr. Part No.B65982E0012D001
BrandEPCOS
HK$13.133
Each (On a Reel of 72)
units
Vertical Coil Former PQ 50 x 50 Core - 12 PMC Thermosetting Plastic - 45.72mm 51mm -
RS Stock No. 167-0495
Mfr. Part No.B66422W1010D001
BrandEPCOS
HK$5.824
Each (In a Box of 325)
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. 125-3596
Mfr. Part No.B65880E2012D001
BrandEPCOS
HK$12.70
Each (In a Pack of 5)
units
Vertical Coil Former PQ 32 x 30 Core - 12 GFR Thermosetting Plastic - 33mm 34.4mm +180°C
RS Stock No. 167-8481
Mfr. Part No.B65816C1512T001
BrandEPCOS
HK$6.932
Each (In a Box of 100)
units
RM 12 Coil Former B65815 38.4 x 28.4 x 23.4mm 12 GFR Polyterephthalate 23.4mm 38.4mm 28.4mm +155°C
RS Stock No. 167-8503
Mfr. Part No.B65647B1014T001
BrandEPCOS
HK$31.118
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. 170-1415
Mfr. Part No.B65734B1000T001
BrandEPCOS
HK$110.415
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. 125-3677
Mfr. Part No.B66364B1016T001
BrandEPCOS
HK$17.19
Each (In a Pack of 5)
units
Horizontal Coil Former ETD 39/20/13 Core - 16 GFR Polyterephthalate - 44.6mm 46.8mm +155°C
RS Stock No. 170-1399
Mfr. Part No.B65612B0000T001
BrandEPCOS
HK$5.502
Each (On a Reel of 50)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C
RS Stock No. 170-1440
Mfr. Part No.B65812N1012D001
BrandEPCOS
HK$7.161
Each (On a Reel of 200)
units
Vertical Coil Former RM 8 Core - 12 GFR Thermosetting Plastic - - 16.9 (Dia.)mm +180°C
RS Stock No. 170-1393
Mfr. Part No.B65527B1008T001
BrandEPCOS
HK$4.851
Each (On a Reel of 1000)
units
SMD Coil Former ER 9.5/5 Core - 8 GFR Liquid Crystal Polymer - 7.6mm 8.2mm +155°C
RS Stock No. 125-3383
Mfr. Part No.B65808N1006D001
BrandEPCOS
HK$8.096
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. 167-8512
Mfr. Part No.B65814C1512T001
BrandEPCOS
HK$8.379
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. 212-5038
Mfr. Part No.B65647B1014T001
BrandEPCOS
HK$43.12
Each
units
PM Ferrites 65.5 x 38.5 x 38mm 14 GFR Polyterephthalate - 65.5mm 38.5mm -
RS Stock No. 125-3408
Mfr. Part No.B65840B1006D001
BrandEPCOS
HK$7.004
Each (In a Pack of 10)
units
Horizontal Coil Former EP 7 Core - 6 GFR Thermosetting Plastic - 10.7mm 8.5mm +155°C
RS Stock No. 647-9553
Mfr. Part No.B66418W1008D001
BrandEPCOS
HK$11.866
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