75 Series Cores

Magnetics 75-Series cores are composed of Iron, Silicon, and Aluminum, achieving better DC Bias performance than Kool Mμ® while maintaining lower core losses than XFlux®. The relatively high saturation flux density of 75-Series cores makes them a low-cost solution in applications where stable inductance under load is necessary, such as inverters for renewable energy sources and Uninterruptable Power Supplies (UPS). 75-Series cores also offer a lower cost alternative to High Flux and a substantial improvement in core loss and DC Bias performance when compared to Iron Powder.

Key Characteristics

  • Composition: Al • Si • Fe
  • Shapes: Toroid
  • Sizes: 24 mm to 134 mm
  • Permeability: 26µ, 40µ, 60µ
  • Coating Color: Black 

For more information on Magnetics' 75-Series toroids, view our technical bulletin.

Core Data AL (nH/T2) Le Path Length
mm
Ae Cross Section
mm2
Ve Volume
mm3
OD max
mm
ID min
mm
HT max
mm
26µ 40µ 60µ
310  19 29 43 56.7 31.7 1,800 23.7 13.3 8.4
350  22  34  51 58.8 38.8 2,280 24.4 13.7 9.7
930 32 50 75 63.5 65.4 4,150 27.7 14.1 12
548  28  41  61 81.4 65.6 5,340 33.7 19.4 11.5
585  16  25  38 89.5 46.6 4,150 35.2 22.5 9.8
324  24  37  56 89.8 67.8 6,090 36.7 21.5 11.4
254  35  54  81  98.4 107 10,600 40.8 23.3 15.4
089  37  57 86 116 134 15,600 47.6 27.9 16.2
438 59 90 135 107 199 21,300 47.6 23.3 19
109 33 50 75 143 144 20,700 58 34.7 14.9
195 60 92 138 125 229 28,600 58 25.6 16.2
620 82   189 144 360 51,800 62.9 31.7 25.9
906     85 196 221 43,400 79 48.2 17.1
715  32  49  73 127 125 15,900 51.7 30.9 14.4
102  48 74 111 243 358 86,900 103 55.8 17.9
337 68 105 158 324 678 220,000 134 77.2 26.8