Patent ID: 8017446

Claim:
A method for manufacturing a rigid power module with a layer that is electrically insulating and conducts well thermally and has been deposited as a coating, the layer having sprayed-on particles that are fused to each other, of at least one material that is electrically insulating and conducts well thermally, having the following steps: manufacturing a one-piece lead frame; populating the lead frame with semiconductor devices, possible passive components, and bonding corresponding connections, inserting the thus populated lead frame into a compression mould so that accessibility of part areas of the lead frame is ensured, pressing a thermosetting compression moulding compound into the compression mould while enclosing the populated lead frame and coating the underside of the thus populated lead frame by thermal spraying in at least the electrically conducting areas and extending also over the majority of the area of the spaces between the electrically conducting areas that are filled with mould compound.