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. 647-9525
Mfr. Part No.B66398W1024T001
BrandEPCOS
MYR12.96
Each
units
ETD 59/31/22 Coil Former B66397 66.9 x 66.2 x 49.2mm 24 GFR Polyterephthalate 49.2mm 66.9mm 66.2mm +180°C
RS Stock No. 167-0164
Mfr. Part No.B66398W1024T001
BrandEPCOS
MYR8.411
Each (In a Box of 40)
units
ETD 59/31/22 Coil Former B66397 66.9 x 66.2 x 49.2mm 24 GFR Polyterephthalate 49.2mm 66.9mm 66.2mm +180°C
RS Stock No. 167-0150
Mfr. Part No.B66368B1020T001
BrandEPCOS
MYR6.216
Each (In a Box of 60)
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -
RS Stock No. 167-8204
Mfr. Part No.B66396W1022T001
BrandEPCOS
MYR7.847
Each (In a Box of 75)
units
ETD 54 B66395 61.6 x 46 x 61.4mm 22 GFR Polyterephthalate 61.4mm 61.6mm 46mm -
RS Stock No. 647-9402
Mfr. Part No.B66362X1014T001
BrandEPCOS
MYR9.28
Each
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. 653-1207
Mfr. Part No.B66368B1020T001
BrandEPCOS
MYR9.49
Each
units
ETD 49/25/16 Coil Former B66367 48.5 x 24.9 x 16.7mm 20 GFR Polyterephthalate 16.7mm 48.5mm 24.9mm -
RS Stock No. 647-9496
Mfr. Part No.B66396W1022T001
BrandEPCOS
MYR10.87
Each
units
ETD 54 B66395 61.6 x 46 x 61.4mm 22 GFR Polyterephthalate 61.4mm 61.6mm 46mm -
RS Stock No. 212-6687
Mfr. Part No.B65816N1012D001
BrandEPCOS
MYR6.068
Each (In a Pack of 5)
units
RM 12 Coil Former B65815 - 12 GFR Thermosetting Plastic 18mm - - +180°C
RS Stock No. 167-8170
Mfr. Part No.B66362X1014T001
BrandEPCOS
MYR5.25
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. 167-8451
Mfr. Part No.B65816N1012D001
BrandEPCOS
MYR3.817
Each (In a Box of 100)
units
RM 12 Coil Former B65815 33 x 33 x 18mm 12 GFR Thermosetting Plastic 18mm - 24.7mm +180°C
RS Stock No. 167-8224
Mfr. Part No.B66362B1014T001
BrandEPCOS
MYR4.107
Each (In a Box of 100)
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. 170-1583
Mfr. Part No.B66414W1008D001
BrandEPCOS
MYR2.668
Each (On a Reel of 960)
units
Horizontal Coil Former EFD 15/8/5 Core - 8 GFR Thermosetting Plastic - 15mm 16.5mm +180°C
RS Stock No. 170-1494
Mfr. Part No.B66206B1110T001
BrandEPCOS
MYR3.418
Each (On a Reel of 735)
units
Horizontal Coil Former E 20/10/6 Core - 10 GFR Polyterephthalate - 22mm 21.2mm +155°C
RS Stock No. 125-3345
Mfr. Part No.B65612B0000T001
BrandEPCOS
MYR3.20
Each (In a Pack of 20)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C
RS Stock No. 167-8580
Mfr. Part No.B65687A1018T001
BrandEPCOS
MYR33.894
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. 125-3669
Mfr. Part No.B66359W1013T001
BrandEPCOS
MYR5.718
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. 212-6839
Mfr. Part No.B65888C1512T001
BrandEPCOS
MYR7.516
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. 162-0189
Mfr. Part No.B65685A1000T001
BrandEPCOS
MYR13.87
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. 125-3684
Mfr. Part No.B66388A2000T001
BrandEPCOS
MYR18.115
Each (In a Pack of 2)
units
Horizontal Coil Former E 65/32/27 Core - - Polyphenylene Sulphide - 44mm 79mm +155°C
RS Stock No. 170-1502
Mfr. Part No.B66230A1114T001
BrandEPCOS
MYR5.03
Each (On a Reel of 240)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C