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. 840-7276
Mfr. Part No.FS-2E-4215-10
BrandBlock
MYR20.08
Each
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 170-7480
Mfr. Part No.FS-2E-4215-10
BrandBlock
MYR22.94
Each (In a Bag of 5)
units
Bobbin Choke Converter Topologies, Transmitter - - - - - - -
RS Stock No. 647-9525
Mfr. Part No.B66398W1024T001
BrandEPCOS
MYR11.72
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
MYR7.61
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. 174-1588
Mfr. Part No.EFD15/8/5-3F3
BrandFERROXCUBE
MYR6.20
Each
units
EFD Core Ferrites 15 x4.65 x 7.5mm 8 GFR Phenolformaldehyde 7.5mm 15mm 4.65mm +180°C
RS Stock No. 167-0150
Mfr. Part No.B66368B1020T001
BrandEPCOS
MYR6.544
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. 212-6687
Mfr. Part No.B65816N1012D001
BrandEPCOS
MYR6.742
Each (In a Pack of 5)
units
RM 12 Coil Former B65815 - 12 GFR Thermosetting Plastic 18mm - - +180°C
RS Stock No. 167-8451
Mfr. Part No.B65816N1012D001
BrandEPCOS
MYR3.696
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. 653-1207
Mfr. Part No.B66368B1020T001
BrandEPCOS
MYR10.54
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
MYR11.82
Each
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
MYR7.85
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. 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. 167-8170
Mfr. Part No.B66362X1014T001
BrandEPCOS
MYR4.337
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. 162-0190
Mfr. Part No.B65812C1512T001
BrandEPCOS
MYR3.21
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. 170-1459
Mfr. Part No.B65840B1006D001
BrandEPCOS
MYR1.58
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. 173-1176
Mfr. Part No.B65844S2000X000
BrandEPCOS
MYR3.261
Each (In a Bag of 500)
units
Mounting Assembly Kit EP 13 Core - - Bronze (Clamp), Cold Rolled Steel (Yoke) - 15 (Clamp) mm, 16 (Yoke) mm 13 (Clamp) mm, 14 (Yoke) mm -
RS Stock No. 170-1499
Mfr. Part No.B66208W1010T001
BrandEPCOS
MYR2.53
Each (On a Reel of 450)
units
Vertical Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 17.3mm +155°C
RS Stock No. 167-8169
Mfr. Part No.B66243B1018T001
BrandEPCOS
MYR8.128
Each (In a Box of 60)
units
E 42/21/20 Coil Former B66329 35 x 50.9 x 28.2mm 18 GFR Polyterephthalate 50.9mm 40mm 37.2mm +155°C
RS Stock No. 125-3403
Mfr. Part No.B65820W1008D001
BrandEPCOS
MYR5.24
Each (In a Pack of 10)
units
Vertical Coil Former RM 7 Core - 8 GFR Thermosetting Plastic - - 14.65 (Dia.)mm +180°C
RS Stock No. 125-3613
Mfr. Part No.B66206W1110T001
BrandEPCOS
MYR5.145
Each (In a Pack of 10)
units
Vertical Coil Former E 20/10/6 Core - 10 GFR Polyterephthalate - 22mm 13.9mm +155°C
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Description:
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EPCOS E13/7/4 Coil formers made from polyterethalate UL ...
Description:
EPCOS E13/7/4 Coil formers made from polyterethalate UL 94 V-0 Insulation class to IEC60085.Maximum operating temperature 155°C solderability to IEC 60068-2-58 The SMD coil former with gullwing terminals is made from GFR liquid crystal polymer.
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EPCOS E13/7/4 Coil formers made from polyterethalate UL 94 V-0 Insulation class to IEC60085.Maximum operating temperature 155°C solderability to IEC 60068-2-58 The SMD coil former with gullwing terminals is made from GFR liquid crystal polymer.
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