METHOD FOR MANUFACTURING LEAD FRAME WITH HEAT SINK PLATE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a lead frame with a heat sink plate capable of manufacturing the lead frame with the heat sink plate improving productivity and having high reliability. SOLUTION: The method for manufacturing the lead frame with the heat sink plate comprises a heat sink plate separating step of separating the heat sink plate 2 of the heat sink frame 2 from a frame 2B by punching it in a lower region of the lead frame 1, and a connecting step of connecting by caulking the separated plate 2A with a unit lead 1 of the lead frame 1 disposed in an upper region.