KH157-040A-HP KH-HP Toroid Core 39.90×24.10×14.50 40µ

KH157-040A-HP is a high-performance toroid core manufactured by KDM, a reputable name in passive electronic components. This magnetic core is specifically designed for applications requiring efficient energy storage and conversion, primarily functioning as the inductive element in various electronic circuits. Its toroidal shape offers superior magnetic coupling and reduced electromagnetic interference (EMI) compared to other core geometries, making it a preferred choice for demanding power electronics and RF applications. The KH-HP series material ensures consistent performance across a wide range of operating conditions, providing engineers with a reliable foundation for their designs.

Key Specifications

The KH157-040A-HP boasts several critical specifications that define its performance and suitability for specific applications. The Series, KH-HP, indicates its membership in KDM’s high-performance line, optimized for efficiency. With a Weight of 4.270 grams, it is a relatively lightweight component, which can be advantageous in weight-sensitive applications. The Core Material, also KH-HP, signifies a specialized blend engineered for optimal magnetic properties, particularly its permeability and saturation characteristics. Its Mounting Type is Through Hole, meaning it is designed for secure mounting on printed circuit boards (PCBs) by passing wire windings through its center. As a Component Type, it is a Magnetic Core (Toroid), emphasizing its primary function in creating inductors or transformers. The AL Value (nH/N²) of 54 is a crucial parameter, representing the inductance per turn squared, which helps in calculating the required number of turns for a desired inductance. A Permeability (µ) of 40 indicates its ability to concentrate magnetic flux, directly influencing the inductance of a coil wound around it. The Effective Area Ae (cm²) of 1.072 and Effective Length le (cm) of 9.840 are geometric parameters used in magnetic circuit calculations, essential for predicting core performance. The physical Dimensions OD×ID×HT (mm) are 39.90×24.10×14.50, specifying its outer diameter, inner diameter, and height, which are critical for mechanical fit and winding space. The Effective Volume Ve (cm³) of 10.500 is another geometric parameter relevant for energy storage calculations. Finally, the Dimensions After Coating (mm) of 40.72×23.30×15.37 provide the exact measurements of the core once its protective coating is applied, which is important for precise mechanical design and assembly.

Features and Benefits

• Optimized KH-HP Material: Utilizes KDM’s proprietary KH-HP core material, offering excellent magnetic properties, including stable permeability and low core losses, which translates to higher efficiency in power conversion applications.
• Toroidal Geometry: The inherent toroidal shape minimizes flux leakage and external electromagnetic interference (EMI), leading to cleaner power delivery and reduced noise in sensitive circuits.
• High AL Value (54 nH/N²): Provides a good inductance per turn, allowing designers to achieve desired inductance values with fewer turns, potentially reducing winding resistance and overall component size.
• Robust Mechanical Design: With precise dimensions (39.90×24.10×14.50 mm) and a durable coating, this core offers mechanical stability and protection, ensuring long-term reliability in various operating environments.
• Versatile Application Range: Suitable for a broad spectrum of applications, from power supplies and DC-DC converters to EMI filters and RF chokes, due to its balanced magnetic characteristics.

Typical Applications

The KH157-040A-HP toroid core is a versatile component finding utility in numerous electronic systems:

• Switch-Mode Power Supplies (SMPS): Widely used as the core for inductors in buck, boost, and buck-boost converters, where its low loss and high energy storage capabilities contribute to the efficiency and stability of power conversion. It helps in smoothing out ripple currents and storing energy during switching cycles.
• DC-DC Converters: Essential for creating efficient inductors in various DC-DC converter topologies, enabling voltage regulation and current control in battery-powered devices, automotive electronics, and industrial control systems. Its compact size and performance are critical here.
• EMI/RFI Filters: Employed in common-mode and differential-mode chokes to suppress unwanted electromagnetic interference (EMI) and radio-frequency interference (RFI) in power lines and data communication circuits, ensuring compliance with regulatory standards and improving system reliability.
• Power Factor Correction (PFC) Circuits: Integral to PFC inductors in power supplies, helping to improve the power factor by shaping the input current waveform to be in phase with the input voltage, thereby reducing harmonic distortion and increasing overall system efficiency.
• RF Chokes and Inductors: Suitable for use in radio frequency applications where a stable inductance and good Q-factor are required to block RF signals while allowing DC or lower-frequency signals to pass, crucial in communication equipment and signal processing.

The KH157-040A-HP from KDM is a reliable and high-performance magnetic core, ideal for a wide array of power and RF applications. This component is stocked and readily available for shipment across India by Cirkit Electro Components, Mumbai, ensuring prompt delivery for your project needs.

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