?Why Does a Magnetic Ring Inductor Coil Overheat?
Dongguan Guangyu Electronics Co., Ltd
15 years of professional manufacturing of inductors, providing a full range of inductors.
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At the core of its functionality, a Magnet ring inductor coil stores energy, suppresses electromagnetic interference and facilitates direct current while impeding alternating current. When subjected to high currents, coils can heat up, potentially leading to overheating, a reduction in inductance, and a steady rise in surface temperature. If the temperature increase exceeds 40°C, the inductor loses its inherent properties. In severe cases, it can culminate in the catastrophic failure of the entire PCB.
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1. Large inductive resistance, thin wire diameter, or excessive winding turns contribute to excessive copper resistance, thereby exacerbating heating issues.
2. Being magnetic materials, ferrite cores exhibit magnetic saturation. An increased magnetic permeability inversely affects saturation capacity, reducing the saturation current threshold and predisposing the component to abnormal heating.
3. Larger ferrite cores warrant the use of thicker wires with fewer turns. This configuration bolsters current tolerance and effectively curbs overheating incidents.