Browse Prior Art Database

Use of Silver Balls to Replace Interstitial Pins

IP.com Disclosure Number: IPCOM000090749D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Beck, JE: AUTHOR [+2]

Abstract

This method for replacing interstitial pins with silver balls of the correct volume. Silver balls are placed on top of the holes to be filled. The part is then passed through a furnace of proper temperature to allow the silver to flow, thus filling the hole and resulting in a conducting interconnection. The silver balls sag into the holes by their weight. It is not required to either squeeze the soft metal into the hole or to use a plurality of smaller balls. The resultant structure provides an interconnection between tip and bottom land patterns. The silver balls are not pure silver. The balls also contain another metal such as nickel or silicon to make the silver more wettable for reflow purposes.

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Use of Silver Balls to Replace Interstitial Pins

This method for replacing interstitial pins with silver balls of the correct volume. Silver balls are placed on top of the holes to be filled. The part is then passed through a furnace of proper temperature to allow the silver to flow, thus filling the hole and resulting in a conducting interconnection. The silver balls sag into the holes by their weight. It is not required to either squeeze the soft metal into the hole or to use a plurality of smaller balls. The resultant structure provides an interconnection between tip and bottom land patterns. The silver balls are not pure silver. The balls also contain another metal such as nickel or silicon to make the silver more wettable for reflow purposes.

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