Method of making contact surface for contact element
First Claim
1. A method of forming a contact surface on a contact element, comprising the steps of:
- forming a contact element having a diameter of about 0.003 inches, said element having a pin section at one end;
providing a plating of a noble metal on said pin section at a free end thereof;
recessing said free end back to provide a sleeve of said plating extending outwardly from said recessed free end;
collapsing said sleeve onto said recessed free end; and
compacting said collapsed sleeve into a rounded tip on said recessed free end.
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Accused Products
Abstract
A miniature socket (10) for electrically interconnecting contact pads on a bare integrated circuit chip (16) to circuit pads (64) on a substrate (18) is disclosed. The socket includes a housing (12) and contact elements (14) having a diameter of about 0.003 inches. The housing (12) includes a recess (28) on one surface (30) for receiving the circuit chip (16) and cavities (44) on an opposite surface (38) for receiving the contact elements (14) and passages (56) leading to the recess (28) from the cavities (44) for receiving the pin sections (80) on the elements (14). Methods of forming a gold tip (84) on the pin sections (80) and for providing cavities (44) and passages (56) in the housing (12) are also disclosed.
43 Citations
15 Claims
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1. A method of forming a contact surface on a contact element, comprising the steps of:
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forming a contact element having a diameter of about 0.003 inches, said element having a pin section at one end; providing a plating of a noble metal on said pin section at a free end thereof; recessing said free end back to provide a sleeve of said plating extending outwardly from said recessed free end; collapsing said sleeve onto said recessed free end; and compacting said collapsed sleeve into a rounded tip on said recessed free end. - View Dependent Claims (2, 3, 4)
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5. A method of forming a contact surface on a contact element, comprising the steps of:
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forming a contact element from a noble metal-plated conductive material with a pin section at one end having a free end; recessing the conductive material core at said free end to provide a noble metal sleeve extending outwardly from a recessed free end; collapsing said sleeve onto said recessed free end; and forming said collapsed sleeve into a rounded tip. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification