| 摘要 |
<PICT:1124067/C1/1> In an electrolytic capacitor having a tantalum wire 11 joined to a tantalum anode, a metal envelope surrounding the anode and a hermetic seal between the tantalum wire and the envelope, the seal includes a glass or ceramic bead 31, a metal ferrule 21 sealed through the bead and surrounding the end of the tantalum wire and an external lead wire 41, the external wire and the tantalum wire and the ferrule being welded together so that the bore of the ferrule is hermetically sealed. The tantalum wire 11 is located within a nickel-iron alloy ferrule 21 sealed into the capacitor envelope by the glass or ceramic seal 31, and the external terminal wire 41 is welded to the wire 11 and to the ferrule by a capacitor discharge. |
