S4020E-090 E Core S4020E 90µ

S4020E-090 is a high-performance E Core manufactured by KDM, a reputable name in passive components. This specific E Core, part of the S4020E series, is a crucial magnetic component used primarily in the construction of inductors, transformers, and chokes. Its E-shaped geometry allows for efficient winding and excellent magnetic coupling, making it ideal for a wide range of power conversion and signal processing applications. The 90µ permeability indicates its suitability for designs requiring a balance of high saturation flux density and moderate core losses, particularly in switching power supplies and EMI filters.

Key Specifications

The S4020E-090 boasts several key attributes that define its performance and application suitability:

• Series: S4020E – This designates the specific product family from KDM, indicating a standardized design and consistent performance characteristics across the series. Understanding the series helps in cross-referencing and ensuring compatibility within a system.
• Core Material: Si-Fe / Sendust / High Flux – This specifies the advanced alloy composition of the core. Silicon-Iron (Si-Fe), Sendust, and High Flux materials are known for their high saturation flux density, excellent DC bias characteristics, and relatively low core losses across a wide frequency range. This makes the core highly efficient in power applications where minimizing energy dissipation is critical.
• Mounting Type: Through Hole – This indicates that the E Core is designed for mounting onto a printed circuit board (PCB) using through-hole technology. This method provides robust mechanical stability and good thermal dissipation, which is advantageous for larger components or those operating under significant power.
• Component Type: E Core – This explicitly identifies the component’s physical shape and primary function. E Cores are widely used due to their ease of winding, good magnetic shielding properties, and ability to house multiple windings for various transformer configurations.
• AL Value (nH/N²): 217 – The AL value, or inductance factor, represents the inductance (in nanohenries) per turn squared (N²). An AL value of 217 nH/N² allows engineers to precisely calculate the required number of turns to achieve a desired inductance for a given application, simplifying inductor and transformer design.
• Permeability (µ): 90 – Permeability is a measure of how easily a material can support the formation of a magnetic field within itself. A permeability of 90µ indicates a material suitable for applications where a balance between high inductance and good high-frequency performance is needed, often found in power inductors and chokes.
• Shape Dimensions (mm): 42.8 21.1 15.4 15.0 30.4 11.9 5.95 9.27 – These dimensions provide the critical physical measurements of the E Core, essential for mechanical design, PCB layout, and enclosure fitting. Accurate dimensions ensure proper integration into the final product.
• Effective Area Ae (cm²): 1.830 – The effective area is the cross-sectional area through which the magnetic flux passes. A larger effective area generally allows for higher power handling capability and lower flux density for a given magnetic flux, reducing core saturation risk.
• Effective Length le (cm): 9.84 – The effective magnetic path length is the average length of the magnetic flux path within the core. This parameter is crucial for calculating inductance and understanding the magnetic circuit’s behavior.
• Effective Volume Ve (cm³): 18.0 – The effective volume represents the total volume of the magnetic material. This value is important for estimating the core’s weight, thermal mass, and overall size, which are critical factors in product design and manufacturing.

Features and Benefits

• High Saturation Flux Density: The Si-Fe / Sendust / High Flux core material ensures the S4020E-090 can handle high current levels without saturating, making it reliable for high-power applications.
• Low Core Losses: Optimized material composition minimizes energy dissipation as heat, leading to higher efficiency in power conversion circuits and reduced thermal management requirements.
• Excellent DC Bias Characteristics: Maintains inductance stability even under significant DC current, which is crucial for power inductors in switching regulators and DC-DC converters.
• Robust Through-Hole Mounting: Provides superior mechanical stability and secure attachment to PCBs, enhancing the overall durability and reliability of the end product, especially in vibration-prone environments.
• Versatile E Core Design: The E-shaped geometry facilitates easy winding, offers good magnetic shielding, and supports various transformer configurations, simplifying design and manufacturing processes.

Typical Applications

• Switching Mode Power Supplies (SMPS): The S4020E-090 is ideally suited for use as the main power transformer or output inductor in SMPS designs, where its low losses and high saturation characteristics contribute to efficiency and reliability.
• DC-DC Converters: In various DC-DC converter topologies (e.g., buck, boost, flyback), this E Core can form the heart of inductors and transformers, providing stable inductance under varying load conditions.
• EMI/RFI Filters: Its magnetic properties make it effective in common mode and differential mode chokes, helping to suppress electromagnetic interference (EMI) and radio-frequency interference (RFI) in electronic systems, ensuring compliance with regulatory standards.
• Power Factor Correction (PFC) Inductors: The core’s ability to handle high currents and maintain inductance makes it suitable for PFC circuits, improving the power quality and efficiency of AC-DC power supplies.
• Renewable Energy Systems: Used in inverters and converters for solar power and wind energy systems, where robust and efficient magnetic components are essential for energy harvesting and grid integration.

The KDM S4020E-090 E Core is a high-quality, reliable magnetic component designed for demanding electronic applications. Its carefully selected material and precise dimensions ensure optimal performance in power conversion and filtering. This part is readily stocked and shipped across India by Cirkit Electro Components, Mumbai.

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