| 摘要 |
PURPOSE:To package electronic parts in an electric circuit to high density by using an airtight terminal obtained by sealing lead wires in an annular shell with glass, holding a plate type capacitor in which two capacitors are formed in one body and a crystal element almost in parallel, and pressing a metallic cap onto the airtight terminal. CONSTITUTION:The capacitor 30 is held on the airtight terminal 19 and then the almost rectangular crystal element 1 which has exciting electrodes 2 and 2' and lead-out electrodes 3 and 3' formed on the top and reverse surfaces opposite each other and the almost rectangular crystal element 1 are held on inner leads 7 and 7' by using a conductive adhesive or solder materials 5 and 5' almost in parallel to the capacitor 30. Then while the crystal element 1 is oscillated through lead wires 10, 10', and 11, metal is stuck on the exciting electrode 2 by vapor deposition, etc., to adjust the oscillation frequency to a specific value. Lastly, the metallic cap 14 is pressed onto the airtight terminal 19 to seal the capacitor 30 and crystal element 1 airtightly. Thus, the capacitor is incorporated to save its space, so the electronic parts can be packaged to high density.
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