NOVELTY - An injection-molded reactor (15) is obtained by injection-molding a core (16) in a state which embeds inside the coil (10) which wound around the conductor wire without gap using a core compound obtained by mixing thermoplastic resin containing resin binder and soft-magnetic powder. The thermoplastic resin containing resin binder essentially contains main-component resin (A) which is highly heat-resistant resin with melting point of 150 degrees C or more, and low-melting-point resin (B) having melting point of 150 degrees C or less which is lower than the melting point of component (A).    USE - Injection-molded reactor is used for step-up circuit for hybrid vehicles, fuel cell electric vehicles, and electric vehicles, and for photovoltaic power generation.    ADVANTAGE - The injection-molded reactor has excellent inductance characteristics and magnetic characteristics. The thermoplastic resin used in the injection-molded reactor has excellent heat resistance, mechanical strength and elasticity modulus.    DETAILED DESCRIPTION - An injection-molded reactor is obtained by injection-molding a core in a state which embeds inside the coil which wound around the conductor wire without gap using a core compound obtained by mixing thermoplastic resin containing resin binder and soft-magnetic powder. The thermoplastic resin containing resin binder essentially contains main-component resin (A) which is highly heat-resistant resin with melting point of 150 degrees C or more, and low-melting-point resin (B) having melting point of 150 degrees C or less which is lower than the melting point of component (A). The components (A) and (B) and soft-magnetic powder are mixed in the ratio which satisfies a relation: X.soft magnetic powder +(100-X).((100-Y').main-component resin (A)+Y'.low-melting-point resin (B)), where X is 83-96 %mass, and Y' is 2-40 %mass. An INDEPENDENT CLAIM is included for core compound.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of injection-molded reactor.    Coil (10)    Injection-molded reactor (15)    Core (16)    Resin coating layer (22)    Coil covering (24)