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. 125-3383
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. 647-9092
Mfr. Part No.B65685A1000T001
BrandEPCOS
HK$36.48
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
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. 125-3669
Mfr. Part No.B66359W1013T001
BrandEPCOS
HK$11.956
Each (In a Pack of 10)
units
Horizontal Coil Former ETD 29/16/10 Core - 13 GFR Polyterephthalate - 35.3mm 35.2mm +155°C
RS Stock No. 170-1457
Mfr. Part No.B65822J1008T001
BrandEPCOS
HK$8.034
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. 170-1502
Mfr. Part No.B66230A1114T001
BrandEPCOS
HK$11.057
Each (On a Reel of 240)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C
RS Stock No. 840-7276
Mfr. Part No.FS-2E-4215-10
BrandBlock
HK$57.34
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 170-1459
Mfr. Part No.B65840B1006D001
BrandEPCOS
HK$3.476
Each (On a Reel of 2000)
units
Horizontal Coil Former EP 7 Core - 6 GFR Thermosetting Plastic - 10.7mm 8.5mm +155°C
RS Stock No. 170-1492
Mfr. Part No.B66202B1108T001
BrandEPCOS
HK$6.468
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. 125-3405
Mfr. Part No.B65822J1008T001
BrandEPCOS
HK$13.745
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. 212-9614
Mfr. Part No.B66242J1000R001
BrandEPCOS
HK$42.34
Each
units
E 42 B66325, B66329 29.2 x 35 x 37.5mm 8 - 37.5mm 29.2mm 35mm -
RS Stock No. 167-0500
Mfr. Part No.B66418W1008D001
BrandEPCOS
HK$5.809
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. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
HK$26.615
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. 161-7774
Mfr. Part No.FS-2E-3611-20
BrandBlock
HK$17.888
Each (In a Bag of 5)
units
E 36 FS-1E-36 - 16 - - - - -
RS Stock No. 167-8478
Mfr. Part No.B65888C1512T001
BrandEPCOS
HK$10.661
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. 213-3922
Mfr. Part No.B66362W1014T001
BrandEPCOS
HK$18.37
Each
units
ETD 34 B66361G - 14 GFR Polyterephthalate - - - +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. 170-1569
Mfr. Part No.B66372A2000T001
BrandEPCOS
HK$46.358
Each (On a Reel of 30)
units
Horizontal Coil Former E 70/33/32 Core - - Polyphenylene Sulphide - 46.5mm 89mm +155°C
RS Stock No. 125-3355
Mfr. Part No.B65662B0000T001
BrandEPCOS
HK$2.604
Each (In a Pack of 50)
units
Vertical Coil Former P 22 x 13 Core - - GFR Polyterephthalate - - 17.8 (Dia.)mm +155°C
RS Stock No. 170-1479
Mfr. Part No.B65880E2012D001
BrandEPCOS
HK$7.183
Each (On a Reel of 112)
units
Vertical Coil Former PQ 32 x 30 Core - 12 GFR Thermosetting Plastic - 33mm 34.4mm +180°C