High density connector having a ball type of contact surface
AssigneeBerg Technology, Inc.
InventorStanley W. Olson
Life of this patent
Estimating the term…
Abstract
A connector for use with a circuit substrate having a plurality of elongated conductors. A solder ball is fused to the end of the conductors for connection of the connector to a circuit substrate. Method for attaching the solder ball to the end of the conductors using a solder paste with or without a preformed solder ball. The conductors are fitted into passages of an interface member. A tail end of each conductor terminates in a well in a surface of the interface member that facilitates the attachment of solder ball to the end of the conductors. The passages in the interface member hold the conductor tail ends in place while providing a clearance around the conductor to accommodate the effects of thermal expansion and contraction.
Claims70
An electrical connector for use in forming an electrical connection between a contact portion of an electronic component and a contact portion of a circuit substrate, the electrical connector comprising:
- a connector body;
- a plurality of electrical contacts disposed on the connector body and arranged to electrically mate with the contact portion of the electronic component;
- an interface member forming a mounting interface for mounting of the connector on the circuit substrate, the interface member located adjacent said connector body, having a plurality of passages therethrough, and a plurality of wells disposed on said mounting interface and in communication with said passages;
- a plurality of elongated conductors disposed on the connector body and arranged to form an electrical connection with the circuit substrate, each elongated conductor being in electrical communication with a corresponding one of said plurality of electrical contacts, each one of said plurality of elongated conductors having a tail end that, once engaging said connector body, is unattachedly disposed within a corresponding one of said passages of said interface member;
- and
- a plurality of solder bodies, each having a curvilinear substrate contact surface and connected on the tail end of a corresponding one of said elongated conductors so as to form an electrical connection between said elongated conductors and said contact portion of the circuit substrate.
An electrical connector for use in forming an electrical connection with a circuit substrate, the electrical connector comprising:
- an interface member, having a surface forming an interface surface with the circuit substrate;
- a peripheral edge;
- and a plurality of wells disposed on said interface surface, each well having a corresponding passage extending from a bottom of the well through said interface member and located away from said peripheral edge, said wells having sides forming a substantially elongated opening such that one side of said wells is longer than an other side of said wells;
- a plurality of elongated conductors each having a tail end wherein each tail end is disposed within a selected one of said passages such that said tail ends terminate in said corresponding wells within a predefined range of said planar surface;
- and
- an electrically conductive material fused on the tail end of said plurality of elongated conductors, said conductive material having at least one cross-sectional dimension smaller than said longer side of said well.
An electrical connector for use in forming an electrical connection between a first electrical element having an electrical contact portion and a second electrical element having an electrical contact portion, the electrical connector comprising:
- a connector body;
- a first electrical contact disposed within said body, said first electrical contact comprising an electrically conductive surface for mating with the electrical contact portion of the first electrical element so as to form an electrical connection between said fist electrical contact and the first electrical element;
- an interface member comprising a well disposed within an interface surface of said interface member and a passage connecting said well with a second surface of said interface member;
- second electrical contact comprising a shaped body of an electrically conductive material having an outer surface for joining said electrical connector with the electrical contact portion of the second electrical element;
- a conductor elongated in a longitudinal direction and having a tail end, said elongated conductor being electrically connected between said first electrical contact and said second electrical contact, said connector body and said interface member being separated along a length of said elongated conductor, said elongated conductor tail end inserted into said passage of said interface member in said longitudinal direction and terminating within a predefined range of said planar surface, wherein said tail end is fusibly joined with said electrically conductive material.
An electrical element for performing a predefined electrical function for use with a circuit substrate, the electrical element comprising:
- an interface member having a first surface for mounting on the circuit substrate, a well with a bottom disposed within said mounting surface and a passage disposed through said interface member and in communication with said well;
- an elongated conductor for providing an electrical current flow between said electrical element and said circuit substrate, said elongated conductor having a tail portion which remains laterally movable in the passage during insertion of said elongated conductor into said passage, said tail portion being within said passage such that an end of said tail portion terminates within said well within a predefined range of the planar surface of said interface member;
- and,
- a solder body fused to the end of said tail portion for being selectively fused to said circuit substrate thereby forming an electrical current path between said elongated conductor and said circuit substrate.
An electrical component adapted to surface mount to a substrate, comprising:
- an insulative body having:
- a mounting surface facing the substrate;
- and
- a passage extending through a central region of said body and directly to said mounting surface;
- an elongated conductive element extending through the passage, the element having a distal end within said passage, the distal end including a side surface treated with an anti-solder migration solution and an end surface transverse to the side surface;
- a fusible member within said passage and fixed only on the end surface by a butt joint between the fusible member and the end surface.
Dependencies are inferred from the claim text.