With the thinning trend of AI servers, high-end PCS, pads, mobile phones and other products and the inherent requirements of high power, the size and power consumption of components used in the whole machine have a huge impact. At the same time, the DC-DC circuit as the power supply side is the first to bear the brunt, which needs to achieve the requirement of low back while maintaining high power; And this burden is naturally pressed on the power inductor with strong direct flow ability; The ultra-thin super current copper-iron co-fired power inductor came into being. At the same time, the accompanying high reliability, high heat dissipation capacity, and low loss are also destined to become the bright spot of copper-iron co-fired inductors. This type has below features: Incomparable ultra-thin advantage; High saturation characteristics; Ultra-low RDC with lower losses for higher power conversion efficiency.