Magnetics® is a manufacturer of three types of soft magnetic cores: powder cores, ferrite cores, and tape wound cores. Each material type has unique attributes and varying applications, but a commonality among the materials is that their primary purpose is power conversion in electronic appliances.
Powder Core products are distributed air gap cores that are primarily used in power inductor applications, specifically in switched-mode power supply (SMPS) output filters, also known as DC inductors. Other power applications include differential inductors, boost inductors, buck inductors, and flyback transformers. Notable characteristics of Magnetics’ Powder Core materials are high resistivity, low hysteresis and eddy current losses, and excellent inductance stability under both DC and AC conditions. Magnetics Powder Core products are available in six materials; Kool Mµ®, Kool Mµ® MAX, Kool Mµ® Hƒ, EdgeTM, Molypermalloy (MPP), High Flux, XFlux®, and 75 Series. These materials range in permeability from 14µ thru 550µ and are available in a variety of shapes including toroids, E cores, U cores, and blocks.
Magnetics soft ferrite cores are an oxide made from Iron (Fe), Manganese (Mn), and Zinc (Zn) and are commonly referred to as manganese zinc ferrites. They have a low coercivity and are also known as soft magnetic ferrites. Because of their comparatively low losses at high frequencies, they are extensively used in switched-mode power supply (SMPS) and radio frequency (RF) transformers and inductors. Ferrite cores for the high frequency power supply and high quality communication markets are produced in a variety of shapes and sizes for inductors, pulse transformers, high frequency transformers, and noise filters. Notable characteristics of Magnetics’ ferrite materials are high permeability, good temperature properties, and low disaccommodation. Magnetics offers eleven materials which range in permeability from 900µ to 15,000µ and are available in a variety of geometries including toroids, shapes, and pot cores.
Magnetics Tape Wound cores are often key components of complicated electronic circuitry found in high reliability applications including military, aerospace, telecommunications, downhole drilling, and nuclear reactors. Tape Wound and Bobbin cores are made from thin strips of high-permeability nickel-iron alloys such as Orthonol®, Square Permalloy 80, Round Permalloy, Supermalloy, and Alloy 48, or grain oriented silicon iron known as Magnesil®. Specific applications for tape wound cores include magnetic amplifiers (MagAmps), converter and inverter transformers, current transformers, and static magnetic devices. Magnetics Nanocrystalline cores are a choice solution for compact and energy efficient designs due to their high permeability, low power loss, and high saturation. Common mode chokes (CMCs) made with nanocrystalline material are used in a wide range of applications including switched-mode power supplies (SMPS), uninterruptible power supplies (UPS), solar inverters, frequency converters, and EMC filters.