Magnetic core is a ferromagnetic component that concentrates and guides magnetic flux in electromagnetic devices like transformers and inductors.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Core Loss | ≤ 100 mW/cm³ at 100 kHz, 200 mT mW/cm³ | Measured at specified frequency and flux density; lower loss preferred for high-frequency applications.IEC 62044-2 |
| Dimensions | OD 10–100 mm, ID 5–50 mm, Height 5–25 mm | Tolerance ±0.5 mm on OD and ID, ±0.3 mm on height. |
| Core Material | Mn-Zn ferrite (e.g., PC40, PC44), Ni-Zn ferrite (e.g., 4C65), powdered iron (e.g., -52, -26), silicon steel (e.g., M-19, M-36), amorphous (Metglas 2605SA1), nanocrystalline (e.g., Finemet FT-3) | Material grade determines frequency range and loss characteristics.IEC 60401-1 |
| Curie Temperature | 100–500 °C | Above Curie temperature, material loses ferromagnetism; select based on maximum operating temperature. |
| Temperature Range | -40 to +200 °C | Operating ambient temperature range; performance may degrade outside this range. |
| Operating Frequency | 10 kHz – 1 MHz Hz | Frequency range for which core is optimized; outside this range, losses increase significantly. |
| Initial Permeability | 10–15000 µi | Varies with material; higher permeability for low-frequency applications, lower for high-frequency.IEC 60401-1 |
| Saturation Flux Density | 0.3–1.6 T | Maximum flux density before saturation; higher values for power applications.IEC 60401-1 |
| Ambient temperature | -40 to +200 °C | Outside this window: Below -40°C, core may become brittle; above 200°C, core loss increases and Curie temperature may be approached, leading to loss of magnetic properties. |
| Flux density | ≤ 0.3 T for ferrite, ≤ 1.6 T for silicon steel | Outside this window: Exceeding saturation flux density causes core saturation, leading to loss of inductance and excessive heating. |
| DC bias | ≤ 50% of saturation flux density | Outside this window: Excessive DC bias reduces effective permeability and may cause premature saturation. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
An assembly containing the primary electromagnetic coil responsible for generating and transmitting signals or power in an industrial system.
Electronic components that measure and monitor electrical current flow in circuits.
An inductive component designed to suppress common-mode electromagnetic interference in electronic circuits.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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The magnetic core concentrates and guides magnetic flux to increase inductance, improve coupling efficiency, and reduce electromagnetic interference in transmitter systems.
Select based on operating frequency (ferrite for high frequency, silicon steel for low frequency), power requirements, temperature stability needs, and core loss specifications.
Core losses primarily result from hysteresis (energy lost during magnetic domain realignment) and eddy currents (circulating currents induced in the core material).
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