| 摘要 |
PURPOSE:To reduce the undesirable short circuit of a lead frame by patterning a thin metal plate and so forming a plurality of lead end corners extended toward a tab for mounting a circuit element as to have round ends in arcuate shape. CONSTITUTION:A circuit element 4 is mounted at a tab 5, which has tab leads 6 for supporting the tab 5 and a plurality of lead wires 7 extended toward the tab 5. The end of the lead wire 7 is so formed at both corners as to have round ends in arcuate shape 11. According to such a lead frame, even if a wire loop is moved toward the resin flowing direction by resin injection pressure when sealing the lead frame with resin after connecting wires 9 therebetween, the lowered wire loop may not make contact with the end of the lead wire 7 adjacent thereto. |
