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

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
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