| 摘要 |
PURPOSE:To stabilize the connecting strength of a ceramic substrate and a pin by using a composite pin connected concentrically with a brazing material as a lead pin when opening the lead pin inserting hole at the substrate having a Cu- metallized layer on the surface and inserting the pin into the hole, thereby utilizing the brazing material for brazing with the metallized layer. CONSTITUTION:When a lead pin 4' is inserted and secured to a ceramic substrate 3 formed with a Cu-metallized layer 2 on the surface and a lead pin inserting hole 1, the pin 4' is not formed as a continuous pin, but formed as a composite pin made of Kovar, or Fe-Ni alloy. In other words, pins 4a, 4b are contacted concentrically, bonded with a brazing material 5' of Au or Ag, and the material 5' is swelled at the bonding end with the pins 4a, 4b. After thus constructed and the pin 4' is inserted into the hole 1, they are filled in a furnace, heated, the material 5' is melted, and bonded to the layer 2. Thus, even if the amount of the material 5' is excess or insufficient, it automatically becomes in a meniscus shape, and the pin 4' and the substrate 3 are rigidly coupled. |
