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$6.613
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. 174-1588
Mfr. Part No.EFD15/8/5-3F3
BrandFERROXCUBE
HK$11.37
Each
units
EFD Core Ferrites 15 x4.65 x 7.5mm 8 GFR Phenolformaldehyde 7.5mm 15mm 4.65mm +180°C
RS Stock No. 125-3682
Mfr. Part No.B66372A2000T001
BrandEPCOS
HK$70.15
Each
units
Horizontal Coil Former E 70/33/32 Core - - Polyphenylene Sulphide - 46.5mm 89mm +155°C
RS Stock No. 125-3684
Mfr. Part No.B66388A2000T001
BrandEPCOS
HK$31.29
Each (In a Pack of 2)
units
Horizontal Coil Former E 65/32/27 Core - - Polyphenylene Sulphide - 44mm 79mm +155°C
RS Stock No. 167-8222
Mfr. Part No.B66362W1014T001
BrandEPCOS
HK$9.517
Each (In a Box of 100)
units
ETD 34 B66361G 39.6 x 33.1 x 41.6mm 14 GFR Polyterephthalate 44mm 39.6mm 27mm +180°C
RS Stock No. 170-1563
Mfr. Part No.B66364B1016T001
BrandEPCOS
HK$9.167
Each (On a Reel of 100)
units
Horizontal Coil Former ETD 39/20/13 Core - 16 GFR Polyterephthalate - 44.6mm 46.8mm +155°C
RS Stock No. 125-3694
Mfr. Part No.B66414W1008D001
BrandEPCOS
HK$9.423
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. 212-6839
Mfr. Part No.B65888C1512T001
BrandEPCOS
HK$14.986
Each (In a Pack of 5)
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. 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. 170-1471
Mfr. Part No.B65878E0012D001
BrandEPCOS
HK$5.315
Each (On a Reel of 216)
units
Vertical Coil Former PQ 26 x 20 Core - 12 GFR Thermosetting Plastic - 26.5mm 29.3mm +180°C
RS Stock No. 162-0179
Mfr. Part No.B66366B1018T001
BrandEPCOS
HK$9.342
Each (In a Box of 50)
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. 170-1495
Mfr. Part No.B66206C1012T001
BrandEPCOS
HK$5.494
Each (On a Reel of 735)
units
Horizontal Coil Former E 20/10/6 Core - 12 GFR Polyterephthalate - 21.5mm 23.5mm +155°C
RS Stock No. 125-3382
Mfr. Part No.B65808N1004D001
BrandEPCOS
HK$9.785
Each (In a Pack of 10)
units
Vertical Coil Former RM 6 Core - 4 GFR Thermosetting Plastic - - 7.45 (Dia.)mm +180°C
RS Stock No. 170-1484
Mfr. Part No.B65884E0012D001
BrandEPCOS
HK$10.928
Each (On a Reel of 72)
units
Vertical Coil Former PQ 40 x 40 Core - 12 PMC Thermosetting Plastic - 38.1mm 40mm -
RS Stock No. 483-3595
Mfr. Part No.B66362B1014T001
BrandEPCOS
HK$12.608
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. 170-1440
Mfr. Part No.B65812N1012D001
BrandEPCOS
HK$7.025
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. 170-1498
Mfr. Part No.B66208B1110T001
BrandEPCOS
HK$5.112
Each (On a Reel of 450)
units
Horizontal Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 28mm +155°C
RS Stock No. 170-1571
Mfr. Part No.B66388A2000T001
BrandEPCOS
HK$31.291
Each (On a Reel of 9)
units
Horizontal Coil Former E 65/32/27 Core - - Polyphenylene Sulphide - 44mm 79mm +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