| 摘要 |
PURPOSE:To prevent the generation of a bridge due to an excessive brazing filler metal at the end section of a ceramic substrate by mounting dummy leads absorbing the excessive brazing filler metal on both outsides of a lead row. CONSTITUTION:Wide leads 14, 15 for absorbing an excessive brazing filler metal are formed to a lead frame 1. The excessive sections 12, 13 of a brazing filler metal 5 are held so as to be in contact with the leads 14, 15, and heated up to a brazing temperature. Since the excessive brazing filler metals 12, 13 adhere on the noses 18, 19 of the leads 14, 15 under a melted state and are absorbed, solder in the same quantity as terminals 7 normally brazed also adheres on terminals 16, 17, and no bridge is generated. A lead connecting member 2 is cut along cutting lines 20, 21, and the leads 14, 15 for absorbing excessive solder are detached, thus obtaining a ceramic substrate with the leads in which all terminals 4 are brazed normally without being bridged. |
