Patent EP0836243A2 successfully refreshed from Google Patents.
EP0836243A2
Expired / Lapsed
EP
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High density connector and method of manufacture
Assignee: FCI SA
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Filing: 1997-10-10
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Granted: —
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Expires: 2017-10-10
Abstract
Abstract Electrical connectors capable of being mounted on circuit substrates by BGA techniques are disclosed. Also disclosed is a method for manufacturing such connectors. There is at least one recess (20,22,24,26,28) on the exterior side of the connector elements. A conductive contact (16) extends from adjacent the interior side of the into the recess on the exterior side of the housing. A controlled volume of solder paste is introduced into the recess. A fusible conductive element, in the form of solder balls (82,100) is positioned in the recess. The connector is subjected to a reflow process to fuse the solder ball (82,100) to the portion of the contact extending into said recess. Contacts (66) are secured in the insulative housing of the connector by deformable sections that minimize stress imposed on the housing, thereby reducing warpage. Solder resist areas are formed on central portions of the contacts to promote uniformity of solder volume. As a result of these features, substantial coplanarity of the BGA array along the mounting interface of the connector is achieved.
Inventors
- 👤 Timothy A. Lemke
- 👤 Timothy W. Houtz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 19:02
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/50; H01R12/51; H01R12/55; H01R12/57; H01R12/70; H01R12/71; H01R12/712; H01R12/716; H01R12/72; H01R12/722; H01R12/727; H01R43/00; H01R43/02; H01R43/0249; H01R43/0256; H01R43/0263; H01R43/20; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3421; H05K3/3426; H05K3/3465; H05K3/3478; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49139; Y10T29/4914; Y10T29/49142; Y10T29/49144; Y10T29/49147; Y10T29/49149
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
59 words
An electrical connector adapted to be mounted on a substrate
having a conductive element, comprising: a contact having a connector portion adapted to be electrically
connected to said conductive element; a body of reflowable, electrically conductive material disposed on
the connector portion, said body being adapted to provide the
primary electrical current path between the connector and the
substrate.
Claim 2
Dependent Claim
67 words
An electrical connector adapted to be mounted on a substrate
having a conductive element, comprising: an insulative housing, the housing having an exterior side adapted
to face the substrate; a contact, the contact having a connection portion adapted to be
electrically connected to said conductive element; and a body of reflowable, electrically conductive material disposed on
the connection portion adjacent said the exterior side of the
housing.
Claim 3
Dependent Claim
89 words
An electrical connector comprising: an insulative housing having a
base wall with an interior side and an exterior side, a plurality of recesses
on said exterior side; a plurality of contact receiving slots, each of said
slots extending from the interior side of said base wall to one of said
recesses; a contact disposed in each of said slots, a plurality of bodies of
reflowable, electrically conductive material, each body being associated
with a recess and having a portion thereof disposed in the recess and
fused to the contact.
Claim 4
Dependent Claim
83 words
An electrical connector comprising: an insulative member having a contact bearing side and a mounting
side; an electrical terminal mounted on the insulative member, the
terminal having a contact portion disposed on the contact bearing
side of the insulative member and a mounting portion, the
mounting portion having a securing section extending at least
partially through the insulative member; and an electrically conductive heat fusible section extending from the
securing section to an exterior face on the mounting side of the
insulative body.
Claim 5
Dependent Claim
102 words
An electrical component adapted to be surface mounted on a circuit
substrate, comprising: a body formed of an insulative material, the body having a
mounting surface adapted to be disposed in facing relationship to
the circuit substrate and an opening therein extending toward said
mounting surface; an electrically conductive member mounted on the body, the
conductive member including a terminal portion extending into the
opening toward the mounting surface, and a securing portion extending from the terminal portion to the
mounting surface for establishing electrical continuity between the
circuit substrate and the conductive member, said securing portion including a heat
fusible section.
Claim 6
Dependent Claim
57 words
An electrical connector comprising: a mounting interface for mounting the connector on a substrate
and a mating interface for presenting electrical contacts for
engagement with contacts of a mating connector; a plurality contacts mounted on the insulative body; and a reflowable element secured on each of the contacts and extending
from the contact toward the mounting interface.
Claim 7
Dependent Claim
86 words
An electrical connector comprising: an insulative housing having a mating interface for mating with a
mating connector and a mounting interface for mounting on a
substrate including conductive elements; a plurality of contacts mounted on the housing, each contact
having a mating portion adapted for engaging a contact from the
mating connector and a connector portion adapted to be secured to
a conductive element on the substrate, and a plurality of solder balls, each solder ball secured on a connection
portion of one of said contacts.
Claim 8
Dependent Claim
45 words
An electrical connector comprising: an insulative base; a plurality of contacts mounted on the base; and a plurality of solder balls, each solder ball being secured on at least
one of the contacts and forming a mounting interface for mounting
the connector on a substrate.
Claim 9
Dependent Claim
52 words
An electrical connector comprising: an insulative base; a plurality of contacts mounted on the base; and a plurality of conductive elements having substrate engaging
surfaces, each conductive element being secured on at least one of
the contacts, the substrate engaging surfaces forming a mounting
interface for mounting the connector on a substrate.
Claim 10
Independent Claim
101 words
A method for placing an exterior conductive contact on an
electrical connector having a base forming an exterior side and an interior
side comprising the steps of: providing at least one recess on the exterior side of the base; providing a conductive contact extending from adjacent the
interior side of the conductor element to the recess on the
exterior side of the base; positioning a conductive element with at least a portion
thereof in the recess provided on the exterior side of the base;
and securing the conductive element onto the contact while the
conductive element is positioned at the recess.
Claim 11
Independent Claim
56 words
A method of making an electrical connector comprising: mounting a contact terminal on one surface of an insulative
member with a portion of the terminal extending into the
insulative member toward a second surface of the insulative
member; and securing a fusible electrically conductive body to the portion of
the terminal extending toward the second surface.
Claim 12
Dependent Claim
93 words
An electrical connector having a base with an exterior side and an
interior side and made by steps comprising: providing at least one recess on the exterior side of the base; providing a conductive contact extending from adjacent the
interior side of the conductor element to the recess on the
exterior side of the base; positioning a conductive element with at least a portion
thereof in the recess provided on the exterior side of the base;
and securing the conductive element onto the contact while the
conductive element is positioned at the recess.
Claim 13
Independent Claim
56 words
A method of making an electrical connector comprising: mounting a contact terminal on one surface of an insulative
member with a portion of the terminal extending into the insulative
member toward a second surface of the insulative member; and securing a fusible electrically conductive body to the portion of the
terminal extending toward the second surface.
Claim 14
Independent Claim
57 words
A method of making an electrical connector comprising: mounting a contact terminal on one surface of an insulative
member with a portion of the terminal extending into the
insulative member toward a second surface of the insulative
member; and securing a substantially spherical electrically conductive
member to the portion of the terminal extending toward the
second surface.
Claim 15
Dependent Claim
60 words
An electrical connector comprising: a connector body; at least one contact receiving opening for receiving a portion of a
contact mountable on the connector body, the opening having a
side wall portion; and; a deformable member located adjacent said side wall and adapted
to be deformed by a contact inserted into the opening and secure
the contact in the opening.
Claim 16
Independent Claim
79 words
A method for minimizing stress build up in the housing of an
electrical connector from insertion of contacts into the housing
comprising the steps of: providing a housing with a plurality of contact receiving openings
therein; inserting contacts into said openings; engaging a deformable structure within the opening while the
contact as the contact is inserted; and localizing any stresses on the housing induced by insertions of the
contact substantially to regions of the openings adjacent the
deformable member.
Claim 17
Dependent Claim
75 words
A contact for an electrical connector comprising: a medial portion; a contact engaging portion extending from the medial portion, said
contact engaging portion being adapted to engage a mating contact; a solder terminal portion extending from the medial portion and
adapted to receive solder to be fused thereon; and said medial section having a coating thereon for resisting solder
wicking from the terminal portion to the engaging portion, the
coating comprising a layer of nickel.
References Cited (Backward Citations)
No citation records indexed.
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