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. 125-3647
Mfr. Part No.B66308B1108T001
BrandEPCOS
HK$10.868
Each (In a Pack of 10)
units
Horizontal Coil Former E 16/8/5 Core - 8 GFR Polyterephthalate - 17.8mm 20mm +155°C
RS Stock No. 213-4076
Mfr. Part No.B66366B1018T001
BrandEPCOS
HK$14.42
Each
units
ETD 44/22/15 Coil Former B66365 49.6 x 51 x 38.4mm 18 GFR Polyterephthalate 38.4mm 49.6mm 51mm +155°C
RS Stock No. 170-1571
Mfr. Part No.B66388A2000T001
BrandEPCOS
HK$31.899
Each (On a Reel of 9)
units
Horizontal Coil Former E 65/32/27 Core - - Polyphenylene Sulphide - 44mm 79mm +155°C
RS Stock No. 167-8170
Mfr. Part No.B66362X1014T001
BrandEPCOS
HK$10.784
Each (In a Box of 100)
units
ETD 34/17/11 Coil Former B66361 39.6 x 27 x 44mm 14 GFR Polyterephthalate 44mm 39.6mm 27mm +180°C
RS Stock No. 170-1426
Mfr. Part No.B65806N1106D001
BrandEPCOS
HK$5.208
Each (On a Reel of 500)
units
Vertical Coil Former RM 5 Core - 6 GFR Thermosetting Plastic - - 10.1 (Dia.)mm +155°C
RS Stock No. 125-3694
Mfr. Part No.B66414W1008D001
BrandEPCOS
HK$9.704
Each (In a Pack of 10)
units
Horizontal Coil Former EFD 15/8/5 Core - 8 GFR Thermosetting Plastic - 15mm 16.5mm +180°C
RS Stock No. 125-3609
Mfr. Part No.B66202B1108T001
BrandEPCOS
HK$10.511
Each (In a Pack of 10)
units
Horizontal Coil Former E 13/7/4 Core - 8 GFR Polyterephthalate - 14.2mm 16.2mm +155°C
RS Stock No. 170-1404
Mfr. Part No.B65652B0000T001
BrandEPCOS
HK$1.229
Each (On a Reel of 500)
units
Vertical Coil Former P 18 x 11 Core - - GFR Polyterephthalate - - 14.8 (Dia.)mm +155°C
RS Stock No. 162-0185
Mfr. Part No.B65685B1016T001
BrandEPCOS
HK$51.755
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. 213-3922
Mfr. Part No.B66362W1014T001
BrandEPCOS
HK$18.57
Each
units
ETD 34 B66361G - 14 GFR Polyterephthalate - - - +180°C
RS Stock No. 170-1393
Mfr. Part No.B65527B1008T001
BrandEPCOS
HK$4.946
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. 647-9238
Mfr. Part No.B65814C1512T001
BrandEPCOS
HK$17.842
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. 170-1444
Mfr. Part No.B65814N1012D001
BrandEPCOS
HK$7.707
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. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
HK$27.132
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. 125-3351
Mfr. Part No.B65652B0000T001
BrandEPCOS
HK$2.091
Each (In a Pack of 50)
units
Vertical Coil Former P 18 x 11 Core - - GFR Polyterephthalate - - 14.8 (Dia.)mm +155°C
RS Stock No. 125-3417
Mfr. Part No.B65848D1010D001
BrandEPCOS
HK$25.285
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. 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. 125-3616
Mfr. Part No.B66208W1010T001
BrandEPCOS
HK$9.524
Each (In a Pack of 10)
units
Vertical Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 17.3mm +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. 125-3345
Mfr. Part No.B65612B0000T001
BrandEPCOS
HK$5.796
Each (In a Pack of 20)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C