Cased Nanocrsytalline Core
Toroidal Casing Nano Core
Cased Nanocrystalline Core designed for thick copper wire and quick assembly. Ultra-high permeability and low core loss across a wide frequency range help you build compact, cool-running chokes and filters with repeatable winding and easy wire positioning.
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DG Focus Technology Co., Ltd. · Custom designs · Fast sampling · Reliable mass production
Key Highlights
For thick copper wire
Generous window area and robust casing support large-gauge wire with low winding stress.
Easy wire positioning
Guided casing geometry improves turn placement and repeatability, reducing assembly time.
Ultra-high permeability
Typical μr 80k–150k enables higher inductance at smaller core sizes.
Low core loss
Excellent loss performance from mid- to high-frequency for cooler operation.
Thermal & EMI performance
Stable from −40–150 °C with strong common-/differential-mode noise attenuation.
Form factors & service
Toroids with snap/clip casings; design optimization, gapping, winding, varnish/potting, quick sampling.
Typical Applications
PFC / Energy Storage Chokes
Server PSUs, chargers, industrial drives
EMI Filters
Common-mode & differential-mode inductors
PV / ESS / UPS Inverters
DC-Link and LCL filtering
On-board Chargers & DC Fast Charging
High power density with low loss
Welding / Induction Heating
High-frequency, high-current environments
Current Sensing
CTs and precision measurement
Key Specifications
| Core Material | Fe-based Nanocrystalline alloy (rapidly quenched; similar to FINEMET) |
|---|---|
| Relative Permeability μr (typ.) | 80,000–150,000 (tuned per application & heat treatment) |
| Saturation Flux Density Bs (typ.) | ≈ 1.2 T |
| Ribbon Thickness | 14–35 µm |
| Operating Temperature | −40–150 °C (consult for higher ranges) |
| Core Loss | Low loss in mid-/high-frequency range; ideal for high-switching topologies |
| Casing Options | Snap / clip casings; typical materials engineered for electrical insulation and easy assembly |
| Available Forms | Toroid (cased), custom sizes on request |
| Compliance | RoHS / REACH friendly; Hi-Pot insulation options available |
Values shown are typical engineering ranges; final datasheets and drawings prevail for ordering.
FAQ
Why choose a cased nanocrystalline toroid?
The casing simplifies handling, improves wire positioning, and protects the ribbon edge. You get faster assembly, repeatable inductance, and robust insulation.
How does nanocrystalline compare with amorphous or permalloy?
Nanocrystalline offers higher permeability and lower loss at mid-/high-frequencies. Amorphous is cost-effective for large sizes/low frequency. Permalloy provides ultra-low loss and excellent stability for precision sensing.
Can you support non-standard sizes?
Yes. Share your target inductance, current, frequency, and size limit. We will recommend core grade, geometry, gap, and turns with a loss/temperature estimate.
Need a quick recommendation or sample?
Tell us your target inductance, frequency, current, window requirement for thick wire, and thermal targets. We will provide a design proposal and lead time.
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