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FK Toroidal Series

Inquiries
  • FK coils are most effective to eliminate common mode noise on power lines and prevent malfunction of various measuring instrument and systematic devices.
  • FK couls are excellent in high frequency characteristics, small and low priced.

Size and part no. designations, electrical specifications

Size and Part No. Designations, electrical specifications
Rated voltage AC250V (between line&line)
Withstand voltage AC2000V 1min. (between line&line)
Insulation resistance Min. 100MΩ at DC500V
Allowable temperature -25degC ~ +105degC

Specifications of standard coil

Part No. Rated current Idc(A) Inductance
(mH)
DCR
one-side
line
(mΩ)
max.
Diameter x Width
(mm)
max.
Wire diameter
(mmφ)
Lead length
(mm)
Mounting pitch (*) Data
PDF
(a)
(mm)
(b)
(mm)
FK-030BK-1020 1 1 110 15x9 0.3 20±5 6 8 PDF
FK-040C-1020 1 1 75 17.5x14 0.4 20±5 8 13
FK-040C-3020 1 3 130 17.5x14 0.4 20±5 8 13
FK-050C-1020 2 1 50 17.5x14 0.5 20±5 8 13
FK-050C-3020 2 3 85 17.5x14 0.5 20±5 8 13
FK-060C-1020 3 1 35 17.5x14 0.6 20±5 8 13
FK-060D-1020 2 1 100 25x14 0.6 20±5 10 13
FK-100D-3010 8 0.3 13 26x14 1.0 20±5 10 14
FK-060E-1020 2 1 50 23x20 0.6 20±5 10 19
FK-060E-2020 2 2 75 23x20 0.6 20±5 10 19
FK-060E-3020 2 3 100 25x20 0.6 20±5 10 19
FK-060E-5020 2 5 110 27x20 0.6 20±5 10 19
FK-080E-1020 5 1 50 26x20 0.8 20±5 10 19
FK-060G-8020 2 8 170 34x23 0.6 20±5 18 19
FK-080G-2020 5 2 70 33x23 0.8 20±5 18 21
FK-080G-5020 4 5 80 34x23 0.8 20±5 18 21
FK-080G-8020 4 8 90 34x23 0.8 20±5 18 21
FK-110G-2020 7 2 25 34x23 1.1 20±5 18 21
FK-130G-1020H 10 1 20 34x23 1.3 20±5 22 21
FK-150J-5020 12 5 20 44x28 1.5 20±5 11 25
FK-130M-2020H 10 2 28 51x27 1.3 20±5 30 30
FK-180M-1020H 15 1 12 51x28 1.8 20±5 35 35
FK-230N-1020H 20 1 8 62x32 2.3 20±5 40 40
FK-260N-1020H 30 1 6 63x37 2.6 20±5 55 20

*Mounting pitches are reference data for design.

About custom made

We can also accept custom-make coils to better suit your needs with standard core and base.
For more information, please ask us via inquiry button in this page

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FK Toroidal Highμ Series

Inquiries
  • Toroidal shape highμ series are small but with high inductance, made with high permeability core.

Size and part no. designations, electrical specifications

Size and Part No. Designations, electrical specifications
Rated voltage AC250V (between line&line)
Withstand voltage AC2000V 1min. (between line&line)
Insulation resistance Min. 100MΩ at DC500V
Allowable temperature -25degC ~ +105degC

Specifications of standard coil

Part No. Rated current
Idc(A)
Inductance
(mH)
min.
DCR
one-side line
(mΩ)
max.
Diameter x
Height x Width
(mm)max.
Wire diameter
(mmφ)
Lead length
(mm)
Mounting pitch (*) Data
PDF
(a)
(mm)
(b)
(mm)
RJ Type FK-060GW-3030RJ 2 30 230 33x36x24 0.6 5±2 18 16 PDF
FK-080GW-2030RJ 4 20 110 34x36x25 0.8 5±2 18 16
FK-100GW-1030RJ 5 10 45 34x36x25 1.0 5±2 18 16
RJT Type FK-060GW-3030RJT 2 30 230 34x39x25 0.6 5±2 18 16
FK-080GW-2030RJT 4 20 110 35x39x26 0.8 5±2 18 16
FK-100GW-1030RJT 5 10 45 35x39x26 1.0 5±2 18 16

*Mounting pitches are reference data for design.

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FK Toroidal Low Profile Series

Inquiries
  • Low profile version of toroidal FK shape seires
  • Suitable for applications that require low profile.
  • Width dimension is 7 ~ 10mm down sizing available than the conventional product.

Size and part no. designations, electrical specifications

Size and Part No. Designations, electrical specifications
Rated voltage AC250V (between line&line)
Withstand voltage AC2000V 1min. (between line&line)
Insulation resistance Min. 100MΩ at DC500V
Allowable temperature -25degC ~ +105degC

Specifications of standard coil

Part No. Rated
current
Idc(A)
Inductance
(mH)
min.
DCR
one-side
line
(mΩ)
max.
Diameter x Width
(mm)
max.
Wire
diameter
(mmφ)
Mounting pitch
(*)
Data
PDF
(a)
(mm)
(b)
(mm)
FK-050GK4-1630H 1 16 240 30x13 0.5 22 21 PDF
FK-070GK4-5020H 3 5 70 31x13 0.7 22 21
FK-080GK4-4520H 4 4.5 62 32x13 0.8 22 21
FK-100GK4-2020H 5 2 25 32x13 1.0 22 21
FK-080JK6-1230H 3 12 90 38x16 0.8 24 32
FK-100JK6-1030H 5 10 56 40x18 1.0 24 32

*Mounting pitches are reference data for design.

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