Abstract 1,071,130. Semi-conductor devices. ROBERT BOSCH G.m.b.H. Aug. 17, 1965 [Aug. 27, 1964], No. 35120/65. Heading H1K. An encapsulated semi-conductor device such as a transistor 1, Fig. 1 (not shown), is stuck to a heat sink 5 such as a metal plate with cooling fins by a thermally conductive but electrically insulating adhesive, such as a polymeric resin. To ensure that there is no metal-to-metal contact between the capsule and the heat sink, they are spaced apart by filamentary nylon or other insulating spacer members of a thickness of about 0.1 mm. The filaments may be woven into a mesh (Fig. 1, not shown) laid down separately (Fig. 2, not shown) or formed into a spiral (Fig. 3, not shown). In all cases the adhesive bonds the metal of the capsule to that of the heat sink with the spacer filaments embedded in the adhesive.
IN AN ARRANGEMENT OF THE CHARACTER DESCRIBED, IN COMBINATION, A SEMICONDUCTOR; A CAPSULE OF ELECTRICALLY CONDUCTIVE MATERIAL HOUSING SAID SEMI-CONDUCTOR; A SUPPORT ELEMENT OF ELECTRICALLY CONDUCTIVE MATERIAL HAVING A POTENTIAL DIFFERENCE WITH RESPECT TO SAID CAPSULE FOR SUPPORTING THE LATTER AND FOR CONDUCTING HEAT AWAY THEREFROM; AND MEANS FOR SECURING SAID CAPSULE TO SAID SUPPORT ELEMENT AND COMPRISING A PLURALITY OF SPACER MEMBERS OF ELECTRICALLY INSULATING MATERIAL SANDWICHED BETWEEN SAID CAPSULE AND SAID SUPPORT ELEMENT AND AN ELECTRICALLY INSULATING ADHESIVE CONNECTING SAID SPACER MEMBERS TO SAID CAPSULE AND TO SAID SUPPORT ELEMENT.
Claim 2
Dependent Claim
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IN AN ARRANGEMENT OF THE CHARACTER DESCRIBED, IN COMBINATION, A SEMICONDUCTOR; A CAPSULE OF ELECTRICALLY CONDUCTIVE MATERIAL HOUSING SAID SEMI-CONDUCTOR; A SUPPORT ELEMENT OF ELECTRICALLY CONDUCTIVE MATERIAL HAVING A POTENTIAL DIFFERENCE WITH RESPECT TO SAID CAPSULE FOR SUPPORTING THE LATTER AND FOR CONDUCTING HEAT AWAY THEREFROM; AND MEANS FOR SECURING SAID CAPSULE TO SAID SUPPORT ELEMENT AND COMPRISING A PLURALITY OF SPACER MEMBERS OF ELECTRICALLY INSULATING MATERIAL SANDWICHED BETWEEN SAID CAPSULE AND SAID SUPPORT ELEMENT AND AN ELECTRICALLY INSULATING ADHESIVE CONNECTING SAID SPACER MEMBERS TO SAID CAPSULE AND TO SAID SUPPORT ELEMENT.