| 摘要 |
A lead frame has a plurality of metallic heat radiating plates, leads connected to each metallic heat radiating plate, other leads separated from the metallic heat radiating plates and a common insulator web attached to the metallic heat radiating plates. When the lead frame is placed in the cavity of a mold, the metallic heat radiating plates are correctly positioned in the mold cavity by the insulating web and the connected leads. By effecting a resin molding under this condition, the metallic heat radiating plates are molded in resin such that a layer of resin with a uniform thickness cover the back surface of the respective metallic heat radiating plates.
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