EQ magnetic core is made of magnetic materials such as ferrite, silicon steel sheet, soft magnetic alloy or nanocrystalline strip. It is a composite magnetic core that combines the characteristics of E-type and Q-type structures. The overall structure presents a combination of an "E" - shaped main body and a "Q" - shaped auxiliary structure. It is often assembled by pairing to form a closed magnetic circuit, and is suitable for circuit design that considers both magnetic coupling strength and heat dissipation space. During the production process, differentiated processes are adopted based on material characteristics: ferrite EQ magnetic cores are formed by batching and then sintered at high temperatures; Silicon steel sheet EQ magnetic core is laminated by precision stamping; Soft magnetic alloy EQ magnetic cores are heat treated after winding or powder pressing, and some products will have a stepped air gap at the joint to balance magnetic permeability and DC bias characteristics.

The design of EQ structure combines the strong magnetic coupling capability of E-type magnetic core with the heat dissipation advantage of Q-type structure, which can improve energy conversion efficiency while reducing heat accumulation; The closed magnetic circuit design effectively reduces magnetic leakage and is suitable for medium to high frequency working scenarios; The organized combination form facilitates winding layout, and by adjusting material ratios and air gap parameters, it can flexibly meet different inductance values and loss control requirements.

The EQ magnetic cores produced by Wanli New Materials cover a variety of material types: EQF - ferrite EQ magnetic cores, EQSS - silicon steel sheet EQ magnetic cores, EQNA - nanocrystalline EQ magnetic cores, EQPM - Permalloy EQ magnetic cores. The following describes the size and magnetic permeability range of each material, as well as the characteristics and applications of these materials.