摘要:
A low parasitic microwave transistor package is provided including a metal header formed from a base member and having a cylindrical center portion; a metallized ceramic insulator formed in an annular ring which is attached to the metal header and surrounding the center portion thereof. A shallow channel is provided in the surface of the pedestal or center portion of the metal header in which a metallized beryllia insulator is attached. Metal leads are attached to the ceramic insulator. The metallized beryllia insulator is suitable for a semiconductor die chip to be attached to the outward surface thereof such that any one of the preferred electrodes of the semiconductor chip can be attached to the header, by stitch bonding, through a very low inductance, low resistance connection. The other electrodes of a semiconductor chip may be selectively attached, via stitch bonds, directly to the metal leads or connected in series thereto through MOS capacitor chips which can be attached to the remaining surface area of the pedestal.
摘要:
A semiconductor device package and a method of making it. A woven fiber mat impregnated with an epoxy adhesive serves as a first housing member. It includes an opening therein for receiving a semiconductor device. The housing member is placed on a supporting heat sink and a lead frame placed on top of the housing member. This subassembly is heated to bond the elements together by curing the epoxy adhesive in the first housing member. A similar second housing member is then placed over the lead frame. The second housing member includes an opening therein which is slightly larger than the opening in the first housing member. A lid is placed on top of the second housing member to cover the opening after the semiconductor device has been bonded to the substrate within the openings in the housing members. The assembly is then again heated to bond the remaining elements together with the epoxy adhesive in the second housing member to form a completed package.
摘要:
A semiconductor device package which can be readily mounted on a printed circuit board without requiring soldering or intermediate connectors. A supporting substrate has a unique lead frame configuration thereon in which the leads extend around side portions of the substrate and form integral spring contacts projecting from the lower surface of the substrate. The package preferably includes a metallic stud having a head portion mounted in the substrate for receiving a semiconductor device and a rod portion extending from the lower surface of the substrate. The rod portion of the stud can be removably secured in an aperture in a printed circuit board to engage the spring contacts with corresponding conductors on the circuit board.
摘要:
A rugged stable component housing is provided, for mounting a microelectronic device and hermetically sealing the area enclosing the device. A lead frame is mounted onto a base, and a dielectric body moulded onto the lead frame, bonding the lead frame to the base and providing a nest area. The nest area has the internal tips and the pad, if any, of the lead frame uncovered by the dielectric material. After mounting the microelectronic device, the nest area is hermetically sealed with a lid bonded to the dielectric body.
摘要:
A method of hermetically sealing flat pack containers having Kovar cans and covers which are gold plated on their sealing surfaces is described. The containers are first vacuum pretinned with an eutectic gold-tin solder so as to dissolve a constant amount of gold from the gold plated sealing surfaces. The containers and covers thus prepared are then juxtaposed at their sealing surfaces and fused together to hermetically seal the containers. Microelectronic devices are assembled within the container before the pretinned layers are fused together.
摘要:
A thin patterned conductive foil is embedded between a pair of adjacent dielectric layers, at least one of which has a hole pattern therein. Portions of the foil cover the holes, so that upon insertion of conductive material into the holes to puncture the foil, electrical contact is provided therebetween.