Electrical duty
Frequency, waveform, flux swing, current and working temperature.
MAGNETIC MATERIALS
Soft Magnetic CoresControl the flux.
Match the electrical duty.
Ferrite and iron powder cores for magnetic circuits and electrical systems.
Request Core SelectionShare Electrical RequirementsApplication overview
Core selection connects electrical performance with the physical design. We review the operating frequency, waveform, temperature and winding envelope alongside the material family, core geometry and gap requirements.
FORMS & CONFIGURATIONS
Made for Your Design.
Representative product forms. Final geometry, dimensions and material are confirmed against your drawing.
EE ferrite cores
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EI ferrite cores
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EC ferrite cores
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EP ferrite cores
Review This FormDESIGN & SELECTION
Start with the Electrical Requirements.
- 01Electrical duty
Frequency, waveform, flux swing and current
- 02Geometry
Window, mating faces and air gap
- 03Material data
Loss, permeability and bias at agreed conditions
Select a category to see the inputs to confirm.
Review This ConfigurationSelection identifies the review scope. Materials, ratings and acceptance criteria remain subject to engineering confirmation.
| Material | Application Requirements | Data to Confirm |
|---|---|---|
| MnZn ferrite | Power conversion, transformer or inductor duty at the specified waveform. | Frequency, flux swing, core loss, permeability and temperature. |
| NiZn ferrite | High-frequency magnetic or suppression duty under defined conditions. | Frequency, impedance/permeability, loss and required geometry. |
| Iron powder | Inductor or energy-storage duty with specified DC bias. | Bias/current waveform, loss, temperature rise and material grade. |
Core shape does not identify the material grade. Winding supply and qualified performance data are confirmed separately.
ENGINEERING REVIEW
Start with the Right Inputs.
A clear specification connects magnetic performance with a practical manufacturing route.
Core geometry
Drawing, winding window, mating faces, gap and assembly envelope.
Material selection
Permeability, core-loss target and intended MnZn, NiZn or iron-powder family.
Supply and acceptance
Quantity, dimensions, inspection method and delivery format.
QUALITY & RELEASE
Agree the Evidence.
Verification follows the component’s function and the agreed inspection plan.
Material & geometry
Review details
Confirm the material specification and finished dimensions.
Functional performance
Review details
Agree the test setup and the performance required in your application.
Production consistency
Review details
Maintain sample approval, lot identification and controlled changes.
PRODUCT QUESTIONS
Before You Send a Drawing.
Do you supply all three core families?
Yes. Ningbo Empire manufactures and supplies MnZn ferrite, NiZn ferrite and iron powder cores. Grade, dimensions and delivery conditions are confirmed for each enquiry.
Can I select a core by shape alone?
No. Similar shapes can use different materials with different loss, permeability and frequency behavior. Send the electrical duty and operating conditions with the drawing.
Are windings included?
This category covers magnetic cores. Any winding, bobbin or finished magnetic component requirement needs separate confirmation in the quotation.
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Explore ProductFROM YOUR DRAWING TO PRODUCTION
Bring Your Design to Production.
Share your drawing. Define the next step.
Start a Technical Review