KSF268-040A Si-Fe Toroid Core 68.00×36.00×20.00 40µ

KSF268-040A is a high-performance Si-Fe Toroid Core manufactured by KDM, a reputable name in passive components. This magnetic core is specifically designed to provide excellent magnetic properties for various inductive applications. Toroid cores, characterized by their doughnut-like shape, offer superior electromagnetic interference (EMI) suppression and efficient energy storage due to their closed magnetic flux path, which minimizes leakage inductance. The Si-Fe (Silicon-Iron) material offers a balanced combination of high saturation flux density and relatively low core losses, making it suitable for a wide range of power and signal processing circuits. This particular core, with its precise dimensions and specified permeability, is engineered to meet the demanding requirements of modern electronic designs.

Key Specifications

The KSF268-040A core boasts several critical specifications that define its performance and suitability for various applications. The Series, identified as Si-Fe, indicates the core’s material composition, which is crucial for determining its magnetic characteristics, including saturation flux density and core losses. The Weight (g) of 9.620 grams provides an important metric for mechanical design considerations, especially in weight-sensitive applications. The Core Material, Si-Fe, signifies a silicon-iron alloy, known for its good magnetic permeability and relatively low cost, making it a popular choice for power inductors and transformers. The Mounting Type is Through Hole, which is typical for larger magnetic components, allowing for robust and secure integration onto printed circuit boards or chassis. The Component Type is a Magnetic Core (Toroid), emphasizing its primary function in forming inductors or transformers. The AL Value (nH/N²) of 95 represents the inductance factor, indicating the inductance produced per turn squared, which is vital for calculating the required number of turns for a desired inductance. The Permeability (µ) of 40 is a key magnetic property, defining how easily a magnetic field can be established within the material. A permeability of 40 suggests a material suitable for applications requiring moderate inductance values without excessive turns. The Effective Area Ae (cm²) of 3.104 and Effective Length le (cm) of 16.330 are geometric parameters used in magnetic circuit calculations, essential for predicting inductance and flux density. The Dimensions OD×ID×HT (mm) of 68.00×36.00×20.00 specify the outer diameter, inner diameter, and height of the core, critical for mechanical fit and winding space. The Effective Volume Ve (cm³) of 50.690 is another geometric parameter, useful for estimating core losses and thermal performance. Finally, the Dimensions After Coating (mm) of 69.40×34.70×21.40 provide the exact dimensions of the core once any protective or insulating coating has been applied, which is important for final assembly and clearance considerations.

Features and Benefits

• Optimized Si-Fe Material: The Silicon-Iron alloy provides a good balance of high saturation flux density and low core losses, making it efficient for power conversion and filtering applications.
• Toroidal Geometry: The closed-loop design of the toroid minimizes magnetic flux leakage, resulting in higher efficiency, reduced EMI, and compact inductor designs.
• Precise AL Value (95 nH/N²): This specific inductance factor allows engineers to accurately design inductors and transformers with predictable performance, reducing development time and ensuring circuit stability.
• Robust Through-Hole Mounting: Designed for secure and reliable mounting, ensuring mechanical stability and excellent electrical contact in demanding industrial and commercial environments.
• Versatile Permeability (40µ): The moderate permeability value makes this core suitable for a broad range of applications, from power inductors to common mode chokes, offering design flexibility.

Typical Applications

The KSF268-040A Si-Fe Toroid Core finds extensive use across various electronic sectors due to its robust magnetic properties and versatile design. One primary application is in Power Supply Inductors, particularly in switch-mode power supplies (SMPS) and DC-DC converters. Here, the core’s ability to store energy efficiently and its relatively low losses contribute to the overall efficiency and stability of the power conversion process, crucial for modern electronics. Another significant application is in EMI/RFI Filters and Common Mode Chokes. The toroidal shape and Si-Fe material are excellent for suppressing unwanted electromagnetic interference, ensuring signal integrity and compliance with regulatory standards in sensitive electronic equipment. Furthermore, these cores are frequently employed in Output Inductors for Audio Amplifiers, where they help smooth out current ripples and improve the fidelity of the audio signal, leading to cleaner sound reproduction. They are also suitable for use in Power Factor Correction (PFC) Circuits, where they contribute to improving the power factor of AC-DC converters, making power consumption more efficient and reducing harmonic distortion. Finally, the KSF268-040A can be utilized in various General Purpose Inductors and Transformers in industrial control systems, telecommunications equipment, and automotive electronics, where reliable magnetic components are essential for circuit operation.

In summary, the KSF268-040A from KDM is a high-quality Si-Fe Toroid Core offering excellent magnetic performance and mechanical robustness. Its specific attributes make it an ideal choice for a wide array of power and signal processing applications. This component is readily stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your project needs.

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