KH050-125A High Flux Toroid Core 12.70×7.62×4.75 125µ

KH050-125A is a high-performance High Flux Toroid Core manufactured by KDM, a reputable name in passive components. This magnetic core is specifically designed for applications requiring high energy storage and efficient power conversion, making it a critical component in various power electronics circuits. Toroid cores, characterized by their doughnut shape, offer superior electromagnetic performance due to their closed magnetic path, which minimizes flux leakage and external electromagnetic interference. The High Flux material system, in particular, provides a unique balance of high saturation flux density and low core losses, making this KH050-125A core an excellent choice for demanding power inductors and transformers.

Key Specifications

This KDM High Flux Toroid Core boasts several crucial attributes that define its performance and suitability for specific applications:

Series: High Flux – This indicates the core belongs to KDM’s High Flux series, known for its high saturation flux density, which allows for smaller inductor designs capable of handling higher currents without saturating. This is critical in power applications where space is at a premium.

Weight (g): 0.383 – A relatively low weight for its performance class, contributing to lighter end products and easier handling during assembly. This is important for portable devices and applications where overall system weight is a design constraint.

Core Material: High Flux – The core is made from a specialized High Flux material, a powdered iron alloy. This material offers a high saturation flux density (typically around 1.5 Tesla), which is superior to many other powdered iron materials, enabling the design of smaller inductors for a given energy storage requirement. It also provides a relatively flat permeability curve over a wide range of DC bias currents, making it ideal for DC-DC converters and output chokes.

Mounting Type: Through Hole – This core is designed for through-hole mounting, which typically involves winding wire directly onto the core and then soldering the leads through holes on a PCB. This method provides robust mechanical stability and excellent thermal dissipation, suitable for high-power applications.

Component Type: Magnetic Core (Toroid) – Confirms its fundamental identity as a toroidal magnetic core, emphasizing its closed-loop magnetic path which is highly efficient for containing magnetic fields.

AL Value (nH/N²): 56 – The AL value represents the inductance factor, indicating the inductance (in nanohenries) per turn squared. An AL value of 56 nH/N² allows designers to accurately calculate the required number of turns to achieve a specific inductance value for their coil, simplifying inductor design.

Permeability (µ): 125 – The permeability of 125 indicates the material’s ability to support the formation of a magnetic field within itself. A higher permeability generally means fewer turns are needed to achieve a given inductance, but High Flux materials balance this with high saturation characteristics, making 125µ a good compromise for power applications.

Effective Area Ae (cm²): 0.114 – The effective cross-sectional area of the core, crucial for calculating the maximum flux density and energy storage capability. A larger Ae allows for higher energy handling before saturation.

Effective Length le (cm): 3.120 – The effective magnetic path length, used in conjunction with Ae to determine the effective volume and overall magnetic properties of the core. It’s a key parameter for magnetic circuit calculations.

Dimensions OD×ID×HT (mm): 12.70×7.62×4.75 – These are the outer diameter (OD), inner diameter (ID), and height (HT) of the core before coating. These dimensions are critical for mechanical fit, winding space calculations, and overall component footprint on a PCB.

Effective Volume Ve (cm³): 0.356 – The effective volume of the core material, directly related to the core’s energy storage capacity. A larger effective volume generally allows for higher energy storage.

Dimensions After Coating (mm): 13.46×6.99×5.51 – These are the dimensions of the core after the application of an insulating coating, which is essential for electrical isolation between the windings and the core, preventing short circuits and improving dielectric strength. These dimensions are crucial for final assembly and clearance considerations.

Features and Benefits

• High Saturation Flux Density: The High Flux material allows for higher energy storage and smaller inductor designs compared to other powdered iron cores, making it ideal for compact power solutions.
• Excellent DC Bias Performance: Maintains a relatively stable permeability even under significant DC bias currents, which is crucial for reliable operation in DC-DC converters and power factor correction (PFC) chokes.
• Low Core Losses: Engineered to minimize energy dissipation as heat, leading to higher efficiency in power conversion applications and reduced thermal management requirements.
• Robust Toroidal Geometry: The closed-loop design inherently reduces electromagnetic interference (EMI) and flux leakage, simplifying system design and improving overall circuit performance.
• Insulating Coating: The applied coating provides essential electrical isolation, enhancing safety and reliability by preventing short circuits between windings and the core.

Typical Applications

The KH050-125A High Flux Toroid Core is highly versatile and finds application in a wide array of power electronics and magnetic component designs:

DC-DC Converters: Widely used as output chokes in buck, boost, and buck-boost converters. Its high saturation and good DC bias characteristics ensure stable inductance and efficient power delivery across varying load conditions.

Power Factor Correction (PFC) Inductors: Essential in active PFC circuits to improve power quality and reduce harmonic distortion in AC-DC power supplies. The core’s ability to handle high currents and its low losses are critical for efficient PFC.

Switch Mode Power Supplies (SMPS): Employed in various stages of SMPS, including input filters, output filters, and energy storage inductors. Its compact size and high-performance material contribute to smaller, more efficient power supplies.

Uninterruptible Power Supplies (UPS): Utilized in the inverter and filter sections of UPS systems to ensure clean, stable power delivery to critical loads, benefiting from the core’s robust magnetic properties.

Renewable Energy Systems: Found in solar inverters and wind power converters, where high-efficiency inductors are needed for power conditioning and grid synchronization, leveraging its ability to handle demanding power cycles.

Electric Vehicle (EV) Charging Infrastructure: Used in onboard chargers and charging stations for filtering and energy storage, where high reliability and efficiency are paramount.

Industrial Power Applications: Integrated into motor drives, welding equipment, and industrial control systems requiring robust and efficient magnetic components for power conditioning and filtering.

In summary, the KH050-125A from KDM is a high-quality High Flux Toroid Core offering an optimal blend of high saturation, low losses, and stable performance under DC bias. Its robust design and excellent magnetic properties make it an indispensable component for demanding power electronics applications. This product is stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your projects.

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