| 摘要 |
957,227. Semi-conductor devices. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Nov. 23, 1962 [Jan. 24, 1962], No. 2642/62. Heading H1K. A semi - conductor device 1 is encapsulated by providing a tubular housing 4 having a portion 8 with increased internal diameter and having the shoulder 9 where this portion meets the remainder of the housing in the form of an annular knife edge 11, the device being mounted on a base 2 which is inserted into the housing to abut the knife edge and the end 12 of the housing 5 is then swaged over so that the base is held firmly against the knife edge. Leads 7, 3 are attached to the device and the base 2 respectively, and the top of the housing 5 has a glass seal 4 through which projects a metal tube 6. When the device is inserted in the housing, lead 7 enters tube 6 which is subsequently crimped at its mid-point into sealing engagement with the lead 7. |
