Dongguan JH's Toroidal Cased Nanocrystalline Cores combine high magnetic performance with mechanical robustness, making them the preferred choice for demanding industrial, automotive, and power electronics environments. With nanocrystalline material offering ultra-high permeability and low losses, and a precision-molded case for insulation and handling, these cores are optimized for compact, high-reliability filtering applications.
What Are Toroidal Cased Nanocrystalline Cores?
These are high-performance nanocrystalline toroidal cores housed in an insulating plastic case. The casing provides mechanical protection and insulation, making them safer and easier to handle — ideal for engineers working with compact or harsh environments.
Why Prefer This Core
-
Easy to Mount
Pre-cased options with pins or leads are plug-and-play for PCBs or assemblies — no additional sleeving or wrapping needed.
-
Superior EMI Filtering
Nanocrystalline material offers ultra-high permeability, effectively attenuating common-mode noise across a wide frequency range.
-
Enhanced Electrical Insulation
The case ensures high dielectric strength, enabling safe operation even in high-voltage or dense component layouts.
-
Built for Harsh Conditions
With an operating temperature range from –40°C to +140°C, these cores are suited for industrial and automotive-grade systems.
-
Low Core Loss, High Efficiency
Maintains excellent performance under high-frequency switching — ideal for power electronics.
Common Applications
-
EV onboard chargers (OBC) and DC/DC converters
-
Telecom and server power supplies
-
Solar inverters and energy storage systems
-
Industrial drives and servo motors
-
EMC common mode/differential mode filters
Key Specifications
| Parameter |
Typical Range |
| Outer Diameter |
Ø13mm to Ø130mm |
| Core Material |
Fe-based Nanocrystalline Alloy |
| Case Structure |
Fully enclosed Toroidal housing / Customize housing |
| Operating Temperature |
–40°C to +140°C |
| Effective Permeability (μe) |
20,000 – 100,000 |
| Dielectric Strength |
≥ 2.5kV (depends on model) |
Custom pinouts, housing colors, and branding options available.
Support from Dongguan JH
-
Fast prototyping and mechanical customization
-
3D drawings, datasheets, and compliance reports (RoHS/REACH)
-
Small-batch flexibility for diverse projects
-
Direct engineering support to streamline your design cycle
Looking for samples or design advice?
Our application engineers are ready to help.
