KPH157-040A-HP KPH-HP Toroid Core 39.90×24.10×14.50 40µ

KPH157-040A-HP is a high-performance toroid core manufactured by KDM, a reputable name in passive components. This magnetic core is specifically designed for applications requiring efficient energy storage and conversion, making it a critical component in various electronic circuits. Toroid cores, characterized by their doughnut-like shape, offer superior magnetic shielding and reduced electromagnetic interference (EMI) compared to other core geometries. The KPH-HP series from KDM signifies a commitment to high-quality materials and precise manufacturing, ensuring optimal performance in demanding environments. This particular core, with its specific dimensions and permeability, is engineered to provide excellent magnetic properties for a wide range of power and signal processing applications.

Key Specifications

The KPH157-040A-HP toroid core boasts several key specifications that are crucial for engineers and designers:

• Series: KPH-HP: This denotes the specific product line from KDM, indicating a high-performance series optimized for efficiency and reliability in magnetic applications.
• Weight (g): 4.270: The relatively low weight of 4.270 grams makes this core suitable for weight-sensitive applications while still providing robust magnetic properties.
• Core Material: KPH-HP: The core material itself is designated as KPH-HP, signifying a proprietary blend developed by KDM to achieve the specified magnetic permeability and performance characteristics. This material ensures consistent magnetic response and low losses.
• Mounting Type: Through Hole: Designed for through-hole mounting, this core can be securely integrated into printed circuit boards (PCBs) using traditional winding techniques, ensuring mechanical stability and reliable electrical connections.
• Component Type: Magnetic Core (Toroid): Clearly identifies the component as a toroid magnetic core, emphasizing its closed-loop magnetic path which minimizes flux leakage and enhances efficiency.
• AL Value (nH/N²): 54: The AL value, or inductance factor, of 54 nH/N² indicates the inductance achieved per turn squared. This is a critical parameter for calculating the required number of turns to achieve a specific inductance in an inductor or transformer design.
• Permeability (µ): 40: With a permeability of 40, this core material offers a good balance between magnetic field concentration and saturation characteristics, making it versatile for various frequency ranges and power levels.
• Effective Area Ae (cm²): 1.072: The effective cross-sectional area of 1.072 cm² is used in magnetic calculations to determine flux density and energy storage capabilities, directly impacting the core’s power handling capacity.
• Effective Length le (cm): 9.840: The effective magnetic path length of 9.840 cm is another crucial parameter for calculating inductance and understanding the magnetic circuit’s behavior.
• Dimensions OD×ID×HT (mm): 39.90×24.10×14.50: These are the precise outer diameter (OD), inner diameter (ID), and height (HT) of the core in millimeters before coating, providing essential physical dimensions for mechanical design and winding considerations.
• Effective Volume Ve (cm³): 10.500: The effective volume of 10.500 cm³ is important for thermal management and understanding the overall magnetic energy storage capacity of the core.
• Dimensions After Coating (mm): 40.72×23.30×15.37: These dimensions account for the protective coating applied to the core, which is vital for insulation, mechanical protection, and preventing short circuits during winding.

Features and Benefits

• Optimized Magnetic Performance: The KPH-HP core material and precise manufacturing ensure excellent magnetic properties, including stable permeability and low core losses, leading to higher efficiency in power conversion.
• Reduced EMI and RFI: The toroidal shape inherently provides a closed magnetic path, significantly reducing electromagnetic interference (EMI) and radio-frequency interference (RFI) compared to other core types, resulting in cleaner power and signal integrity.
• Compact and Lightweight Design: Despite its robust performance, the core maintains a relatively compact footprint and low weight, making it suitable for space-constrained applications without compromising magnetic capabilities.
• High Inductance Factor (AL Value): The AL value of 54 nH/N² allows for achieving desired inductance with fewer turns, simplifying winding processes and potentially reducing overall component size.
• Robust Construction for Reliability: The KDM KPH-HP series is known for its durable construction, including a protective coating, which enhances the core’s mechanical strength and electrical insulation, ensuring long-term reliability in various operating conditions.
• Versatile Application Range: The balanced permeability and saturation characteristics make this core highly versatile, suitable for a broad spectrum of applications from power supplies to signal filtering.

Typical Applications

• Switch-Mode Power Supplies (SMPS): This toroid core is ideal for use in inductors and transformers within SMPS designs, where its low losses and efficient energy storage contribute to higher power conversion efficiency and reduced heat generation.
• DC-DC Converters: In DC-DC converter circuits, the KPH157-040A-HP can be employed in output inductors or coupled inductors to smooth current, store energy, and provide voltage regulation, critical for stable power delivery.
• EMI/RFI Filters: Due to its excellent magnetic shielding properties, the core is highly effective in common-mode and differential-mode chokes for EMI/RFI filtering, helping to suppress unwanted noise in sensitive electronic equipment.
• Power Factor Correction (PFC) Circuits: In PFC applications, these cores can be utilized in boost inductors to improve the power factor of AC-DC converters, leading to more efficient power utilization and compliance with regulatory standards.
• Audio Amplifiers and Signal Processing: The core’s consistent magnetic properties and low distortion characteristics make it suitable for use in audio transformers and inductors, ensuring high-fidelity signal transmission and minimal signal degradation.

The KPH157-040A-HP toroid core from KDM is a high-quality, reliable passive component engineered for demanding electronic applications. Its superior magnetic properties, robust construction, and versatile design make it an excellent choice for engineers seeking optimal performance. This product is readily stocked and available for shipment across India by Cirkit Electro Components, Mumbai, ensuring prompt delivery for your project needs.

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