T Cores (Toroidal)
Introduce of T-core, Toroidal Cores, Ring Soft MnZn Ferrite Core Magnets
Toroid cores are the core type geometry of choice for optimizing performance. A toroid of round cross-section offers better performance than one of rectangular cross-section, but for practical and economic reasons, toroid cores of rectangular cross-section are much more prevalent. The symmetry of T cores circular geometry minimizes the amount of external magnetic flux produced. Consequently T cores produce much lower amounts of unwanted electromagnetic interference. Compared against other core types, a toroidal coil has a lot of surface area from which it can dissipate heat hence it cools much better than other core types. Cooler windings result in higher efficiency and may allow more utilization of the core’s capability. Because of its circular nature, the magnetic path of a T-core is an unbroken continuous path unless intentionally broken. There is no air gap in the magnetic path (unless intentionally added) hence optimal use can be made of high permeability materials. Toroids are manufactured in practically all “soft” magnetic materials. Toroid Cores can be coated with insulation like powder coating core and parylene coated core to provide electrical isolation between the core and the winding(s). Some toroid cores are “boxed” to provide isolation, because the core material is sensitive to stresses produced by the winding processes.
Applications of T-core
T cores are widely applied in Power, Current transformer and Telecom field.
T-core used in power: power transformer core, power inductor core, DC-DC Converters, DC converter core, Compact Power Transformer, Small and Low Profile Power Inductors, Wideband transformers, and other inductive delay lines.
T-core used in telecom: xDSL pass-band Filters, Spilters, EMI Inductors, and Filter Inductors with Tight Tolerance.
T-core used in current transformer: EMI-suppression in power lines, EMI-suppression in mains filters.
T core magnetic material drawing
| Type | Dimensions(mm) | ||
|---|---|---|---|
| A | B | C | |
| T4×2×2 | 4.0±0.3 | 2.0±0.3 | 2.0±0.3 |
| T5×3×5 | 5.0±0.3 | 3.0±0.3 | 5.0±0.3 |
| T6×3×4 | 6.0±0.3 | 3.0±0.3 | 4.0±0.3 |
| T6.3×4×4 | 6.3±0.3 | 3.8±0.3 | 4.0±0.3 |
| T7×4×4 | 7.0±0.3 | 4.0±0.3 | 4.0±0.3 |
| T9×5×3 | 9.0±0.3 | 5.0±0.3 | 3.0±0.3 |
| T10×6×5 | 10.0±0.4 | 6.0±0.4 | 5.0±0.3 |
| T10×5×5 | 10.0±0.4 | 5.0±0.4 | 5.0±0.3 |
| T12×6×4 | 12.0±0.4 | 6.0±0.4 | 4.0±0.3 |
| T12.7×7.8×5 | 12.7±0.4 | 7.8±0.3 | 5.0±0.3 |
| T13×7×5 | 13.0±0.5 | 7.0±0.4 | 5.0±0.3 |
| T14×7×5 | 14.0±0.5 | 7.0±0.4 | 5.0±0.3 |
| T16×12×8 | 16.0±0.5 | 12.0±0.4 | 8.0±0.3 |
| T16×9×8 | 16.0±0.5 | 9.0±0.4 | 8.0±0.3 |
| T16×9.5×8 | 16.0±0.5 | 9.5±0.4 | 8.0±0.3 |
| T17×10×8 | 17.5±0.5 | 10.0±0.3 | 8.0±0.3 |
| T18×10×10 | 18.0±0.5 | 10.0±0.4 | 10.0±0.3 |
| T22×14×12 | 22.0±0.6 | 14.0±0.4 | 12.0±0.3 |
| T22×10×10 | 22.0±0.6 | 10.0±0.4 | 10.0±0.3 |
| T22.1×13.7×6.5 | 22.1±0.3 | 13.7±0.3 | 6.5±0.3 |
| T25×15×7 | 25.0±0.6 | 15.0±0.4 | 7.0±0.3 |
| T25×15×10 | 25.0±0.6 | 15.0±0.4 | 10.0±0.3 |
| T27.5×17.5×7 | 27.5±0.6 | 17.5±0.5 | 7.0±0.4 |
| T28×14×11 | 28.0±0.6 | 14.0±0.5 | 11.0±0.4 |
| T30×11×8 | 30.0 +0 -0.8 | 11.0 +0.5 -0 | 8.0±0.4 |
| T31×13×16 | 31.0±0.6 | 13.0±0.5 | 16.0±0.4 |
| T31×19×13 | 31.0±0.6 | 19.0±0.5 | 13.0±0.4 |
| T31×19×6 | 31.0±0.6 | 19.0±0.5 | 6.0±0.3 |
| T68×44×13.5 | 68.0±1.5 | 44.0±1.2 | 13.5±1.0 |
| T31×20×15 | 31.0±0.6 | 20.0±0.5 | 15.0±0.3 |
| T36×23×19 | 36.0±0.6 | 23.0±0.5 | 19.0±0.3 |
| T37×22×15.5 | 37.0±0.5 | 23.0±0.5 | 15.5±0.5 |
| T50×35×20 | 50.0±0.8 | 35.0±0.7 | 20.0±0.5 |
| T38×19×13 | 38.0±0.7 | 19.0±0.6 | 13.0±0.5 |
| T50×25×20 | 50.0±0.8 | 25.0±0.7 | 20.0±0.5 |
| Type | Core parameter | weight (g/pr.) | Al(nH/N²)±25% | |||||
|---|---|---|---|---|---|---|---|---|
| C1 (mm-1) | Ae (mm2) | Ie (mm) | Ve (mm3) | F3 | F2BD | F2B1 | ||
| T4×2×2 | 4.55 | 1.9 | 8.74 | 16.73 | 0.09 | 820 | 690 | 630 |
| T5×3×5 | 2.55 | 4.9 | 12.0 | 58.93 | 0.3 | 1200 | 1000 | 900 |
| T6×3×4 | 2.35 | 5.8 | 13.1 | 75.33 | 0.37 | 1400 | 1130 | 1030 |
| T6.3×4×4 | 5.05 | 3.1 | 15.2 | 46.53 | 0.26 | 640 | 520 | 470 |
| T7×4×4 | 2.85 | 5.8 | 16.4 | 95.93 | 0.48 | 1120 | 950 | 900 |
| T9×5×3 | 3.05 | 5.8 | 20.8 | 121.1 | 0.7 | 800 | 750 | 620 |
| T10×6×5 | 2.55 | 9.8 | 24.1 | 235.6 | 1.2 | 1300 | 1100 | 950 |
| T10×5×5 | 1.7 | 12.9 | 22.2 | 286.1 | 1.5 | 2000 | 1650 | 1480 |
| T12×6×4 | 2.35 | 11.5 | 26.1 | 301.3 | 1.6 | 2100 | 1400 | 1200 |
| T12.7×7.8×5 | 2.65 | 12.0 | 31.0 | 371.8 | 1.9 | 1400 | 1150 | 1000 |
| T13×7×5 | 2.05 | 14.5 | 29.5 | 428.6 | 2.2 | 1630 | 1430 | 1300 |
| T14×7×5 | 1.85 | 16.8 | 30.5 | 512.7 | 2.6 | 2000 | 1600 | 1400 |
| T16×12×8 | 2.75 | 15.9 | 43.4 | 689.3 | 3.4 | 1270 | 1040 | 950 |
| T16×9×8 | 1.45 | 27.2 | 37.2 | 1012.9 | 5.0 | 2400 | 2000 | 1800 |
| T16×9.5×8 | 1.5 | 25.4 | 38.3 | 973.5 | 5.2 | 2450 | 2000 | 1800 |
| T17×10×8 | 1.55 | 27.4 | 40.5 | 1107.3 | 5.5 | 2380 | 2000 | 1800 |
| T18×10×10 | 1.25 | 38.9 | 41.5 | 1614.9 | 7.9 | 2800 | 2500 | 2100 |
| T22×14×12 | 1.25 | 47.2 | 54.7 | 2879.9 | 13.5 | 2900 | 2450 | 2250 |
| T22×10×10 | 0.88 | 57.0 | 45.4 | 2587.8 | 14 | 3850 | 3400 | 3080 |
| T22.1×13.7×6.5 | 2.0 | 26.8 | 54.1 | 1450.4 | 7.2 | 1780 | 1500 | 1400 |
| T25×15×7 | 1.85 | 34.2 | 60.2 | 2061.1 | 12 | 2000 | 1600 | 1500 |
| T25×15×10 | 0.98 | 63.6 | 60.2 | 3827.8 | 20.5 | 3500 | 3000 | 2800 |
| T27.5×17.5×7 | 2.0 | 34.3 | 68.3 | 2351.4 | 13 | 1800 | 1500 | 1400 |
| T28×14×11 | 0.8 | 74.0 | 61.0 | 4511.3 | 23.5 | 4600 | 3800 | 3500 |
| T30×11 ×8 | 0.8 | 69.9 | 54.7 | 3828.5 | 20.5 | 4600 | 3800 | 3500 |
| T31×13×16 | 0.5 | 135.3 | 61.1 | 8268.4 | 41.5 | 7000 | 6000 | 5500 |
| T31×19×13 | 1.0 | 76.53 | 75.5 | 5771.9 | 29 | 3500 | 3000 | 2900 |
| T31×19×6 | 2.1 | 35.33 | 75.5 | 2663.9 | 15 | 1650 | 3000 | 1200 |
| T68×44×13.5 | 137 | 2700 | ||||||
| T31×20×15 | 1.0 | 81.23 | 77.6 | 6300.7 | 34 | 3500 | 3000 | 2900 |
| T36×23×19 | 0.7 | 121.5 | 89.6 | 10888.1 | 55 | 5000 | 4000 | 3800 |
| T37×22×15.5 | 0.9 | 106.5 | 90.8 | 9667.1 | 48 | 3900 | 4400 | 3100 |
| T50×35×20 | 0.9 | 148.4 | 130.7 | 19402.7 | 98 | 3950 | 3450 | 3150 |
| T38×19×13 | 0.7 | 118.7 | 82.7 | 9820 | 49 | 5000 | 3000 | 2900 |
| T50×25×20 | 0.5 | 240.2 | 108.9 | 26156 | 127 | 7000 | 6000 | 5000 |
Customization T Type Soft Ferrite Cores Toroid
Customization T Type Soft Ferrite Cores Toroid, Mn-Zn Chokes Ferrite Bead, Toroid MnZn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Soft Ferrite RS type Toroid […]
Mn-Zn Chokes Ferrite Bead Toroid Cores
Mn-Zn Chokes Ferrite Bead Toroid Cores, Toroid Mn-Zn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Soft Ferrite RS type Toroid core China Supplier Mn-Zn Chokes […]
Toroid Core MnZn Ferrite Ring
Toroid Core MnZn Ferrite Ring, Toroid Mn-Zn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Soft Ferrite RS type Toroid core China Supplier Toroid Core MnZn […]
Toroid Core Iron Powder MnZn Ferrite Cores
Toroid Core Iron Powder MnZn Ferrite Cores, Toroid Mn-Zn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Soft Ferrite RS type Toroid core China Supplier Toroid […]
Ferrite Iron Powder Toroidal Core
Ferrite Iron Powder Toroidal Core, Toroid Mn-Zn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Soft Ferrite RS type Toroid core China Supplier Ferrite Iron Powder […]
Toroid Mn-Zn Ferrite Sendust Cores
Toroid Mn-Zn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core China Supplier Toroid Mn-Zn Ferrite Sendust Cores […]
Large Size Toroidal Sendust Core Ferrite
Large Size Toroidal Sendust Core Ferrite, Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core China Supplier Large Size Toroidal Sendust […]
Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets
Uncoated Epoxy Parylene Coated Ferrite Core Toroid Ring Magnets, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, Mn-Zn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core […]
Epoxy / Parylene Coated Ferrite Core Toroids
Epoxy / Parylene Coated Ferrite Core Toroids, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, Mn-Zn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core China Supplier […]
T Type Ring Ferrite Core
T Type Ring Ferrite Core Toroidal MnZn Ferrite Core, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, Mn-Zn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core […]
All Color Toroidal MnZn Ferrite Core
All Color Toroidal MnZn Ferrite Core, Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability Mn-Zn Toroidal Ferrite Ring Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, Mn-Zn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core China Supplier All […]
Small Size Soft Ferrite Toroid Core Ring Magnet
Small Size Soft Ferrite Toroid Core Ring Magnet, High Permeability MnZn Toroidal Ferrite Ring Core, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft Ferrite RS type Toroid core China Supplier Small Size Soft […]
High Permeability MnZn Toroidal Ferrite Ring Core
High Permeability MnZn Toroidal Ferrite Ring Core, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft magnetic Ferrite RS type Toroid core China Supplier Factory High Permeability MnZn Toroidal Ferrite Ring Core – Toroidal […]
NiZn MnZn Toroid Ferrite Ring Core for Singal and Power USB Cables Lines
NiZn MnZn Toroid Ferrite Ring Core for Singal and Power USB Cables Lines, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, Toroidal ferrite core, Soft magnetic Ferrite RS type Toroid core China Supplier Factory NiZn MnZn Toroid […]
Ferrite Toroid Cores for High Temperature Inductors
Ferrite Toroid Cores for High Temperature Inductors, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS […]
Power Inductor Toroid Ferrite Core Ring Magnets
Power Inductor Toroid Ferrite Core Ring Magnets, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS […]
Ferrite Toroidal Cores for Transformer
Ferrite Toroids Toroidal Cores for Transformers, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Soft Magnetic toroid core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS type […]
Ferrite Toroids Toroidal Cores for Transformers
Ferrite Toroids Toroidal Cores for Transformers, Toroid Mn-Zn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft […]
All Size Customized Mn-Zn Ferrite Ring Core
All Size Customized Mn-Zn Ferrite Ring Core, Toroid MnZn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, […]
Toroid MnZn Ferrite Core
Toroid MnZn Ferrite Core, Toroid MnZn O Core, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite […]
Toroid MnZn O Core Ferrite
Toroid MnZn O Core Ferrite, Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS type Toroid […]
Iron Powder Cores Ferrite Rings
Iron Powder Cores Ferrite Rings, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS type Toroid core China Supplier Factory Iron […]
Painted and Uncoated Toroidal Magnetic Cores
Painted and Uncoated Toroidal Magnetic Cores, Toroidal Transformer Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, Soft magnetic Ferrite RS type Toroid core China Supplier Factory […]
Toroidal Transformer Core Ferrite Ring
Toroidal Transformer Core Ferrite Ring, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, T Ring Form TYPE Soft magnetic Ferrite Inductance Magnetic Core, Ferroxcube RS type Large […]
Power Transformer Ferrite Toroid Cores
Power Transformer Ferrite Toroid Cores, Toroid Ferrite Core, Soft Ferrite Pressed Toroidal Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, T Ring Form TYPE Soft magnetic Ferrite Inductance Magnetic Core, Ferroxcube RS type Large […]
Toroid Ferrite Core
Toroid Ferrite Core, Toroidal Ferrite Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, T Ring Form TYPE Soft magnetic Ferrite Inductance Magnetic Core, Ferroxcube T type Large Ferrite Toroid core China Supplier Factory Toroid […]
Toroidal Ferrite Core
Toroidal Ferrite Core, MnZn Toroidal Ferrite Ring Core, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, T Ring Form TYPE Soft magnetic Ferrite Inductance Magnetic Core, Ferroxcube T type Large Ferrite Toroid core China Supplier Factory Toroidal Ferrite Core The […]
High Frequently Soft Ferrite Core Toroid Bobbin
High Frequently Soft Ferrite Core Toroid Bobbin, T Type Toroidal Ferrite Core, MnZn Soft Ferrite Ring Core, T toroidal ring Mnzn ferrite core, Ferrite Rings, toroid ring cores, Toroidal ferrite core, T Ring Form TYPE Soft magnetic Ferrite Inductance Magnetic Core, Ferroxcube T type Large Ferrite Toroid core China Supplier High Frequently Soft Ferrite Core […]