Permeability
High Magnetic Permeability
Soft magnets provide high initial and maximum permeability, enabling efficient magnetic flux conduction and compact magnetic circuit design.
Soft Magnetic Materials & Components
Low-loss, high-permeability soft magnetic materials for transformers, inductors, motors, sensors and power electronics.
What are Soft Magnets?
Soft magnetic materials are alloys and ceramics that can be easily magnetized and demagnetized. Unlike hard permanent magnets, they are designed to work in alternating magnetic fields with low hysteresis loss and high permeability.
Typical soft magnetic materials include soft ferrite cores, silicon steel laminations, permally (NiFe), and amorphous / nanocrystalline alloys. They are the core of modern power electronics, signal transformers, EMI suppression and motor control.
Key Features of Soft Magnetic Materials
Loss
Low Core Loss
Materials optimized for low hysteresis and eddy-current losses across a wide frequency range, from 50/60 Hz to hundreds of kHz or even MHz.
Control
Easy Magnetization
Low coercivity allows rapid magnetization and demagnetization, making soft magnets ideal for AC fields and switching applications.
Portfolio
Wide Material Portfolio
From low-frequency silicon steel to high-frequency ferrite and nanocrystalline cores, we cover multiple materials to match each application.
Typical Applications
Power Electronics
- SMPS transformers and chokes
- PFC inductors and line filters
- DC–DC converter magnetics
Motors & Drives
- Motor stator and rotor laminations
- Soft magnetic components in drives
- Magnetic flux guides and shields
Signal & Communication
- Signal transformers and pulse transformers
- Telecom and LAN magnetics
- Common-mode chokes and EMI filters
Sensing & Measurement
- Current transformers and sensors
- Fluxgate and Hall sensor cores
- Magnetic shielding components
Types of Soft Magnetic Materials
We offer a complete range of soft magnetic materials and core types for low- and high-frequency applications.
| Material Type | Typical μ (Relative) | Bs (T) | Frequency Range | Main Applications |
|---|---|---|---|---|
| Soft Ferrite (MnZn / NiZn) | 1,000 – 15,000 | 0.35 – 0.50 | 20 kHz – 1 MHz+ | SMPS transformers, inductors, EMI filters |
| Silicon Steel (CRGO / CRNO) | 1,000 – 6,000 | 1.6 – 2.0 | 50 / 60 Hz – few kHz | Power transformers, motors, generators |
| Permalloy (NiFe) | 20,000 – 100,000+ | 0.7 – 0.8 | 50 Hz – 100 kHz | Precision sensors, CT cores, shielding |
| Amorphous Alloy | 10,000 – 80,000 | 1.5 – 1.6 | 1 kHz – 100 kHz | High-efficiency transformers, PFC inductors |
| Nanocrystalline Alloy | 50,000 – 150,000+ | 1.2 – 1.3 | 10 kHz – 1 MHz | Common-mode chokes, high-frequency CTs |
| Custom Grades | Tailored material and core designs available upon request. | |||
Core Shapes & Structures
Ferrite Cores
- EE, EI, EC, EFD, ETD, PQ, RM, U, Toroid
- Standard sizes and custom shapes
- Gapped and ungapped versions
Laminated Cores
- EI, UI, and custom lamination stacks
- CRGO / CRNO silicon steel
- Core assembly and varnish treatment
Strip-Wound Cores
- Amorphous and nanocrystalline toroidal cores
- Cut cores and C-cores
- Optimized for low loss and high permeability
Custom Assemblies
- Core + bobbin + winding + potting
- Pre-assembled transformers and inductors
- Design for mass production and reliability
Design & Engineering Support
Magnetic Design
- Core selection based on power, frequency and topology
- AL value, flux density and temperature rise calculation
- Optimization for efficiency, size and cost
Thermal & Loss Analysis
- Core loss estimation (hysteresis + eddy current)
- Hot spot and temperature rise analysis
- Material comparison for your application
Prototyping & Testing
- Sample cores and wound components
- Inductance, loss and saturation testing
- Support from prototype to mass production
Soft Magnetic Materials – FAQ
What is the difference between soft and hard magnets?
Soft magnets have low coercivity and are used in AC and switching fields; hard magnets (permanent magnets) have high coercivity and retain magnetization without external fields.
How do I choose the right core material?
Selection depends mainly on frequency, power level, loss requirements, size constraints and cost. We help you compare ferrite, silicon steel, amorphous and nanocrystalline options.
Can you provide wound components, not only cores?
Yes. We can supply cores, core + bobbin assemblies, as well as fully wound transformers, inductors and chokes according to your specifications.
Do you support custom shapes and materials?
We support custom core geometries, cut cores, special coatings and tailored material parameters for high-volume industrial customers.
Need Soft Magnetic Solutions for Your Power or Sensor Project?
Send us your power rating, frequency, topology and drawing. Our team will recommend suitable soft magnetic materials, core types and complete magnetic components.