Magnetics

Powder Cores Material Overview

Magnetics® powder cores are excellent as low loss inductors for switched mode power supplies (SMPS), switching regulators, and noise filters. Molypermalloy (MPP), High Flux, Kool Mµ®, XFlux®, Kool Mµ® MAX, Edge®, and Kool Mµ® Hƒ powder cores are available, some in a variety of shapes.

  Kool Mµ® Kool Mµ® MAX Kool Mµ® Hƒ Kool Mµ® Ultra XFlux® High DCB XFlux® XFlux® Ultra High Flux Edge® High DCB Edge® MPP

Material Code
Toroids

 77 79 76 70 78 78-S01 74 58 59 59-S01 55

Material Code
Shapes

 K Y/A F L X X-S01 T H G G-S01 M

Alloy Composition

 FeSiAl FeSiAl FeSiAl FeSiAl FeSi FeSi FeSi FeNi FeNi FeNi FeNiMo

Available Permeabilities

 14-125 14-90 26-60 26-60 19-125 26-60 26, 60 14-160 14-125 26, 60 14-550
Available Shapes Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, U		 Toroid, Block,
Round Block, Cylinder,
E, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid, Block,
Round Block, Cylinder,
E, EER, EQ,
LP, U		 Toroid Toroid, THINZ™

Core Loss
mW/cm3) 100 kHz, 100 mT

 550 550 325 160 1280 1600 1035 625 675 500 450

Perm vs. DC Bias
(Oe) 50% of µi,

 95 130 115 120 170 200 180 185 205 230 105

Relative Cost

 1x 2x 2x 3x 1.2x 1.2x 1.5x 4x-6x 5x 5x 7x-9x
Material Description Kool Mµ®, also known as sendust, is an economical low loss material with high saturation (10,500 gauss) Kool Mµ® MAX takes low core loss Kool Mµ material and enhances with 50% better DC bias performance for better handling. Kool Mµ® Hƒ powder cores are optimized for frequencies 200-500 kHz and exhibit approximately 35% lower losses compared to standard Kool Mµ®. Our lowest loss powder core material, Kool Mµ® Ultra has 50% lower core losses than standard Kool Mµ with superior DC bias. XFlux cores offer an economical high saturation (1.6 Tesla) solution for use in low and medium frequency inductors and chokes. High DC Bias XFlux® cores offer the same high saturation found in standard silicon-iron XFlux while providing up to 20% improvement in DC bias. XFlux® Ultra cores offer the same high saturation found in standard silicon-iron XFlux while providing a 20% improvement in core loss. High Flux cores have saturation flux density that is three times or more that of ferrite. As a result, High Flux cores can support significantly more DC bias current or AC flux density. Edge® cores offer exceptional performance, with approximately 40% lower losses and 30% improvement in DC bias compared with High Flux. High DC Bias Edge cores offer the best DC bias performance of all alloy powder cores, up to 20% improvement compared to standard Edge®. MPP cores possess many outstanding magnetic characteristics, such as high resistivity, exceptionally low losses, and excellent inductance stability after high DC magnetization or under high DC bias conditions.