High Quality Sendust Cores

Sendust Cores are soft magnetic powder cores made from an optimized iron–silicon–aluminum (Fe-Si-Al) alloy, widely used in power electronics where high current capability, low core loss, and stable inductance are required.

Compared with traditional ferrite materials, Sendust Powder Cores offer superior DC bias performance, lower audible noise, and excellent thermal stability, making them an ideal solution for high-frequency and high-current magnetic designs.

FERRTX provides a full range of Sendust Powder Magnetic Cores designed for modern power conversion systems, supporting both standard designs and customized requirements.

Key Features of Sendust Powder Cores

• Low Core Loss
  Optimized alloy composition minimizes hysteresis and eddy current losses at medium to high frequencies.

• Excellent DC Bias Performance
  Maintains inductance stability under high DC current conditions, outperforming traditional Ferrite Core solutions.

• Distributed Air Gap Structure
  Naturally distributed air gap eliminates the need for mechanical gapping, improving consistency and reliability.

• Low Acoustic Noise
  Ideal for noise-sensitive applications such as power supplies and industrial control systems.

• High Thermal Stability
  Stable magnetic characteristics across a wide operating temperature range.

• Wide Frequency Range
  Suitable for switching frequencies from tens of kHz up to several hundred kHz.

Material Characteristics – Sendust Powder

Sendust material is composed of approximately 85% iron, 9% silicon, and 6% aluminum, offering a balanced combination of magnetic permeability and saturation flux density.

Compared with other Magnetic Cores materials such as ferrite or amorphous alloys, Sendust provides:

• Higher saturation current capability

• Lower sensitivity to temperature variation

• Improved performance in power inductors and energy storage components

Typical Applications

Sendust Cores are widely used in:

• Power Inductors for DC-DC converters

• PFC (Power Factor Correction) inductors

• Switching power supplies (SMPS)

• Solar inverters and energy storage systems

• EV onboard chargers and power modules

• Industrial power converters and motor drives

In many designs, Sendust Cores are selected as an alternative to Ferrite Core solutions when higher DC bias and lower audible noise are required.

Compatibility with Inductor Designs

Sendust Powder Cores are commonly paired with various inductor structures, including:

• toroidal choke designs for compact, low-leakage applications

• High-current Flat Wire Inductor constructions to reduce copper loss

• Shielded and unshielded power inductors for EMI-sensitive systems

This flexibility allows engineers to optimize electrical performance while meeting size and efficiency requirements.

Manufacturing & Quality Control

FERRTX controls the complete production process of Sendust Powder Cores, including:

• Powder formulation and insulation coating

• Precision pressing and curing

• Dimensional and magnetic parameter inspection

• Consistency verification for batch production

All products comply with RoHS requirements and are suitable for global industrial and commercial markets.

Customization Capability

We support customized Sendust Core solutions, including:

• Core dimensions and shapes

• Permeability grades

• Loss optimization for specific frequency ranges

• Matching with specific winding or Transformer and inductor designs

Our engineering team works closely with customers to ensure optimal magnetic performance for each application.

Why Choose FERRTX Sendust Cores?

• Stable supply for mass production

• Engineering support for magnetic design optimization

• Consistent quality for industrial-grade applications

• Competitive pricing for global B2B customers

Whether you are designing high-efficiency power converters or advanced energy systems, FERRTX Sendust Powder Cores deliver reliable performance and long-term stability.