Kool Mµ® Hƒ Cores

Kool Mµ® Hƒ powder cores are made from distributed gap alloy powder optimized for frequencies 200-500 kHz. Exhibiting approximately 35% lower losses when compared to Kool Mµ, Kool Mµ Hƒ is a cost-effective solution for minimizing power losses in high frequency power supplies using GaN or SiC, high efficiency power supplies, and Uninterruptible Power Supplies (UPS).

Key Characteristics

  • Composition: Al • Si • Fe
  • Shapes: Toroid
  • Sizes: Up to 62 mm in 40µ & 60µ; up to 133 mm in 26µ
  • Permeability: 26µ, 40µ, 60µ
  • Coating Color: Black

For more information on Magnetics' new Kool Mµ Hƒ toroids, view our technical bulletin.

Property Curves

View Kool Mµ Hƒ Material Property Curves including DC Magnetization, Core Loss Density curves, and Permeability versus DC Bias curves.

Kool Mµ Hƒ Part Number Identification

How To Order: Magnetics Powder Cores

Core Data AL nH/T2 (nominal) Le Path Length
mm
Ae Cross Section
mm2
Ve Volume
mm3
OD max
mm
ID min
mm
HT max
mm
26µ 40µ 60µ
050 12 18 27 31.2 10.9 340 13.5 6.98 5.52
120 15 24 35 41.2 19.2 791 17.3 9.52 7.12
380 19 28 43 41.4 23.2 960 18.1 9.01 7.12
206 14 21 32 50.9 22.1 1,120 21.1 12.0 7.12
310 19 29 43 56.7 31.7 1,800 23.7 13.3 8.3
350 22 34 51 58.8 38.8 2,280 24.4 13.7 9.66
930 32 50 75 63.5 65.4 4,150 27.69 14.1 12.0
548 28 41 61 81.4 65.6 5,340 33.66 19.4 11.5
585 16 25 38 89.5 46.6 4,150 35.18 22.5 9.78
324 24 37 56 89.8 67.8 6,090 36.71 21.5 11.4
395 53   122 95.1 153.7 14,617 40.13 22.08 17.0
254 35 54 81 98.4 107 10,600 40.77 23.3 15.4
454 47 72 108 102 147.5 15,100 43.83 23.4 17.26
089 37 57 86 116 134 15,600 47.63 27.88 16.2
438 59 90 135 107 199 21,300 47.63 23.3 19.0
715 32 49 73 127 125 15,900 51.69 30.93 14.4
109 33 50 75 143 144 20,700 58.0 34.7 14.9
195 60 92 138 125 229 28,600 58.0 25.6 16.2
620 82 126 189 144 360 51,800 62.00 32.6 25.0
070 65 100 143 158 314 49,700 69.4 34.7 21.4
740 88 136 204 184 497 91.400 75.0 44.4 35.9
866 30 45 68 196 176 34,500 78.9 48.2 13.9
906 37 57 85 196 221 43,400 78.9 48.2 17.1