Amorphous Core
Amorphous Core
Fe-based Amorphous Core solutions for cost-effective, low-loss magnetics. Excellent saturation flux and good permeability deliver efficient transformers, chokes and EMI filters from low to mid frequencies, with reliable thermal stability.
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DG Focus Technology Co., Ltd. · Custom designs · Fast sampling · Reliable mass production
Key Highlights
Low core loss
Very low hysteresis and eddy loss at low–mid frequencies for cooler operation.
High saturation flux
Typical Bs ≈ 1.56 T allows higher current handling before saturation.
Good permeability
Typical μr 5k–80k (grade-dependent) for efficient designs.
Cost-effective
Attractive performance-per-cost compared with other soft-magnetic materials.
Thermal stability
Reliable from −40–130 °C with low drift; higher ranges available on request.
Flexible forms
Toroid, C/E-core, gapped/cut cores, coated or cased versions; custom sizes.
Typical Applications
Power Transformers
Low-loss cores for compact, efficient transformers
PFC / Storage Chokes
Gapped amorphous cores with stable inductance
EMI Filters
Common-/differential-mode inductors
PV / ESS / UPS
DC-Link & LCL filtering
EV Chargers & Industrial Drives
Low loss and high Bs for robust power stages
Current Sensors / CTs
Cut cores and toroids for easy assembly
Key Specifications
| Core Material | Fe-based Amorphous alloy (rapidly quenched metallic glass) |
|---|---|
| Relative Permeability μr (typ.) | 5,000–80,000 (grade & heat treatment dependent) |
| Saturation Flux Density Bs (typ.) | ≈ 1.56 T |
| Core Loss | Very low at low–mid frequencies; excellent for power transformers and chokes |
| Operating Temperature | −40–130 °C (consult for higher ranges) |
| Ribbon Thickness | 18–25 µm standard (others on request) |
| Available Forms | Toroid, C/E-core; coated, cased, gapped/cut variants |
| Compliance | RoHS / REACH friendly; insulation classes for Hi-Pot available |
Values shown are typical engineering ranges; final datasheets and drawings prevail for ordering.
FAQ
Amorphous vs. Nanocrystalline vs. Permalloy?
Amorphous offers low loss and high Bs at attractive cost—great for larger sizes and low–mid frequencies. Nanocrystalline delivers higher permeability and lower loss at mid–high frequencies. Permalloy excels in ultra-low loss and stability for precision sensing.
Can you make gapped or cut cores?
Yes. We provide calibrated gaps and cut cores with targeted μe, plus winding and thermal recommendations.
How do I select the right grade?
Share inductance, current/ΔI, frequency, window limits, and temperature rise targets. We will propose grade, geometry, gap and turns with loss/thermal estimates.
Need a recommendation or sample?
Tell us your target inductance, frequency, current, size limits, and thermal targets. We will provide a design proposal and lead time.
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