Iron powder cores have a distinct advantage over other core materials due to the distributed air gaps within the core material. These air gaps increase the amount of dc bias that can be applied to the coil winding before the core reaches saturation. Pure iron powder cores manufactured from carbonyl iron powders are ideal for high frequency applications which require high Q values and low permeability's. Iron-alloy cores manufactured from nickel-iron and silicon-iron powders exhibit higher permeability's with low core losses when operating at high magnetizing levels.

MATERIAL GRADES                                                                                                                                 Click for details



20i 26i  60i 75i 90i  125i  140i  147i  160i  173i
MPP        93      95    96  97  98
High Flux        83      85    86  87  
Sendust     72 73 74 79 75        
Carbonyl Iron  EN                    

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Manganese-zinc ferrite cores are mainly used for power applications where high permeability's and low core losses are required. Manganese-zinc ferrite materials are characterized by high initial permeability's, typically from 1400i to 15000i. Using high permeability ferrite cores reduces the number of turns which are required to achieve high inductance values. This in turn reduces the dc resistance and parasitic capacitance caused by the copper wire windings and also reduces the copper costs. Curie temperatures for MnZn ferrite cores typically range from 150C lowering to 100C for the highest permeability materials.

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Permeability 2300i 2400i 3000i 4300i 5000i 7000i 10000i 12000i 15000i
MnZn Power Ferrite Material SM023 SM024 SM030            
MnZn High Permeability Ferrite Material       SM043 SM050 SM070 SM100 SM120 SM150

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