Patent EP0206584A1 successfully refreshed from Google Patents.
EP0206584A1
Expired / Lapsed
EP
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Surface mountable electronic device
Assignee: American Precision Industries Inc
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Filing: 1986-06-04
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Granted: —
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Expires: 2006-06-04
Abstract
Abstract The present invention provided a surface mountable electronic device (10) and method of making the same wherein a discrete electronic device (12) encapsulated in a body (14) of electrical insulating material having first and second ends (32, 34), a mounting surface (36) is provided extending between the ends, and first and second electrodes (48) are provided on the first and second ends (32, 34) of the body (14), respectively. Each of the electrodes (48) includes an end portion on the corresponding end of the body (14) in electrical contact with the corresponding lead (16, 18) of the discrete electronic device (10) and a contact portion (66-72) extending along the mounting surface (36-42) for making electrical connection to a circuit having a portion defined on a surface to which the device (10) is mountable. The discrete electronic device (12) is manufactured, prior to encapsulation, by known and proven techniques. Preferably the body (14) is a rectangular solid with each of the four sided having electrode contact portions (66-72) thereon to thus serve as one of four possible mounting surfaces each (36-42) with substantial mechanical stability. When the discrete electronic device is an inductor, interruption of the magnetic field is minimized by spacing the ends of the inductor core from the ends of the encapsulating body, separating the electrode contact portions, having the area of the electrode end portion less than the area of the end of the encapsulating body, and having the cross-sectional area of the most narrow section of the electrode end portion no less than the cross sectional area of the magnetic wire of the inductor winding, In the case of a shielded inductor, phenolic core inductor or non-inductive device such as a resistor, capacitor or diode, solid metal electrode can be employed.
Inventors
- 👤 Donald C. Mcelheny
- 👤 Dale E. Ponivas
- 👤 David A. Syracuse
- 👤 Stephen H. Chandler
- 👤 Robert H. Nareau
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 11:57
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H01; H01F; H01F27/00; H01F27/28; H01F27/29; H01F27/292; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09372; H05K2201/09381; H05K2201/09818; H05K2201/09954; H05K2201/10; H05K2201/10613; H05K2201/10621; H05K2201/10636; H05K2201/10742; H05K2201/10886; H05K2201/10916; Y; Y02; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
146 words
A surface mountable electronic device comprising: a) a discrete electronic device comprising a body and a pair of spaced apart leads extending out from said body in generally different directions; b) a body of electrical insulating material encapsulating said device body and said leads, said insulating body having first and second ends and a mounting surface extending between said ends, said leads terminating adjacent said end; and c) first and second electrode means on said first and second ends of said body, respectively, each of said electrode means including an end portion on the corresponding end of said body and in electrical contact with the corresponding one of said leads, each of said electrode means further including a contact portion extending along said mounting surface for making electrical connection to a circuit having a portion defined on a surface to which said electronic device is mountable.
Claim 2
Dependent Claim
146 words
A surface mountable electronic device comprising: a) a discrete electronic device comprising a body and a pair of spaced apart leads extending out from said body in generally different directions; b) a body of electrical insulating material encapsulating said device body and said leads, said insulating body having first and second ends and a mounting surface extending between said ends, said leads terminating adjacent said end; and c) first and second electrode means on said first and second ends of said body, respectively, each of said electrode means including an end portion on the corresponding end of said body and in electrical contact with the corresponding one of said leads, each of said electrode means further including a contact portion extending along said mounting surface for making electrical connection to a circuit having a portion defined on a surface to which said electronic device is mountable.
Claim 3
Dependent Claim
41 words
A device according to claim 1, wherein said end portion of each of said first and second electrode means has a surface area less than the surface area of the corresponding body end on which said electrode end portion is located.
Claim 4
Dependent Claim
45 words
A device according to claim 2, wherein said electrode end portion is elongated in shape extending from the termination of the corresponding one of said leads along said end of said body to the junction of said end and said mounting surface of said body.
Claim 5
Dependent Claim
53 words
A device according to claim 2, wherein said electrode end portion includes a plurality of sections, each section being elongated in shape extending from the termination of the body to the junction of said end and said mounting surface of said body, said sections being in angularly spaced relation on said body end.
Claim 6
Dependent Claim
64 words
A device according to claim 4, wherein said contact portion of said electrode means includes a plurality of spaced-apart sections extending from corresponding ones of said electrode end portion sections, said contract sections being in spaced relation on said mounting surface, the contact sections adjacent one end of said body being in alignment with the contract sections adjacent the other end of said body.
Claim 7
Dependent Claim
49 words
A device according to claim 1, wherein said body of insulating material is elongated having a longitudinal axis and said first and second ends of said body are disposed to planes substantially perpendicular to said longitudinal axis, said leads extending in a direction generally parallel to said longitudinal axis.
Claim 8
Dependent Claim
22 words
A device according to claim 6, wherein said mounting surface comprises a plurality of planar sections disposed parallel to said longitudinal axis.
Claim 9
Dependent Claim
26 words
A device according to claim 7, wherein said mounting surface comprises four planar sections wherein adjacent sections meet at right angles whereby said body is rectangular.
Claim 10
Dependent Claim
17 words
A device according to claim 8, wherein said first and second ends of said body are planar.
Claim 11
Dependent Claim
59 words
A device according to claim 9, wherein said discrete device is an inductor comprising a core and a winding on said core and electrically connected to said leads, and wherein said end portion of said electrode means has a surface area less than the surface area of the corresponding body end on which said electrode end portion is located.
Claim 12
Dependent Claim
66 words
A device according to claim 10, wherein said electrode end portion is elongated in shape extending from the termination of the corresponding one of said leads along said end of said body to the junction of said end and said mounting surface of said body, said end portion having a cross-sectional area substantially no less than the cross-sectional area of the wire of said inductor winding.
Claim 13
Dependent Claim
91 words
A device according to claim 10, wherein said electrode end portion includes a plurality of sections, each section being elongated in shape extending from the termination of the corresponding one of said leads along said end of said body to the junction of said end and the corresponding section of said mounting surface of said body, said electrode sections being in angularly spaced relation on said body end, each of said electrode sections having a cross-sectional area substantially no less than the cross-sectional area of the wire of said inductor winding.
Claim 14
Dependent Claim
67 words
A device according to claim 12, wherein said contract portion of said electrode means includes a plurality of spaced-apart sections extending from corresponding ones of said electrode end portion sections, said contract sections being in spaced relation on said sections of said mounting surface, the contact sections adjacent one end of said body being in alignment with the contact sections adjacent the other end of said body.
Claim 15
Dependent Claim
25 words
A device according to claim 1, wherein each of said ends of said body of insulating material is spaces from said body of said device.
Claim 16
Dependent Claim
14 words
A device according to claim 2, wherein said discrete electronic device is an inductor.
Claim 17
Independent Claim
53 words
A device according to claiml, wherein said discrete electronic device is an inductor comprising a core and a winding on said core and electrically connected to said leads, and said device further includes shield means surrounding a major portion of said inductor core and winding for containing magnetic flux from said inductor therein.
Claim 18
Dependent Claim
42 words
A device according to claim 16, wherein said end portion of each of said first and second electrode means has a surface area substantially equal to the surface area of the corresponding body end on which said electrode end portion is located.
Claim 19
Dependent Claim
13 words
A device according to claim 1, wherein said discrete electronic device is non-inductive.
Claim 20
Dependent Claim
42 words
A device according to claim 18, wherein said end portion of each of said first and second electrode means has a surface area substantially equal tot he surface area of the corresponding body end on which said electrode end portion is located.
Claim 21
Dependent Claim
191 words
A surface mountable electronic device comprising: a) a discrete electronic device comprising a body having an axis and a pair of leads extending from said body in substantially opposite directions and substantially parallel to said axis; b) an elongated rectangular solid body of electrical insulating material encapsulating said device body and said leads, said insulating body having a longitudinal axis substantially parallel to said device axis, said insulating body having substantially planar first and second ends disposed substantially perpendicular to said longitudinal axis, said leads terminating adjacent said ends; and c) first and second electrode means on said first and second ends of said body, respectively, each of said electrode means including an end portion on the corresponding end of said body and in electrical contract with the corresponding one of said leads, each of said electrode means including a contact portion extending along at least one of the faces of said body of insulating material for making electrical connection to a circuit having a portion defined on a surface to which said electronic device is mountable whereby said face containing said contact portion is a mounting surface for said device.
Claim 22
Dependent Claim
191 words
A surface mountable electronic device comprising: a) a discrete electronic device comprising a body having an axis and a pair of leads extending from said body in substantially opposite directions and substantially parallel to said axis; b) an elongated rectangular solid body of electrical insulating material encapsulating said device body and said leads, said insulating body having a longitudinal axis substantially parallel to said device axis, said insulating body having substantially planar first and second ends disposed substantially perpendicular to said longitudinal axis, said leads terminating adjacent said ends; and c) first and second electrode means on said first and second ends of said body, respectively, each of said electrode means including an end portion on the corresponding end of said body and in electrical contract with the corresponding one of said leads, each of said electrode means including a contact portion extending along at least one of the faces of said body of insulating material for making electrical connection to a circuit having a portion defined on a surface to which said electronic device is mountable whereby said face containing said contact portion is a mounting surface for said device.
Claim 23
Dependent Claim
63 words
A device according to claim 20, wherein said discrete device is an inductor comprising a core and a winding on said core and electrically connected to said leads, and wherein each of said end portions of said first and second electrode means has a surface area less than the surface area of the corresponding body end on which said end portion is located.
Claim 24
Dependent Claim
76 words
A device according to claim 21, wherein each of said end portions of said first and second electrode means is elongated in shape extending from the termination of the corresponding one of said leads along said end of said body to the junction of said end and a corresponding face of said body, each of said end portions having a cross-sectional area substantially no less than the cross-sectional area of the wire of said inductor winding.
Claim 25
Dependent Claim
102 words
A device according to claim 21, wherein each of said end portions of said first and second electrode means includes a plurality of sections, each section being elongated in shape extending from the termination of the corresponding one of said leads along said end of said body to the junction of said end and a corresponding one of the face of said body, there being one of said sections for each face of said body and said sections being in orthogonal spaced relation on said body end, each of said sections having a cross-sectional area of the wire of said inductor winding.
Claim 26
Dependent Claim
95 words
A device according to claim 23, wherein each of said contact portions of said first and second electrode means includes a plurality of spaced-apart sections extending from corresponding ones of said electrode end portion sections, there being one contact portion section on each face of said body and spaced from the neighboring section on an adjacent face, the contact sections adjacent one end of said body being in alignment with the contact sections adjacent the other end of said body whereby any face of said body can serve as a mounting surface for said device.
Claim 27
Dependent Claim
32 words
A device according to claim 23,wherein each of said electrode end portion sections is substantially rectangular in shape having a longitudinal axis extending substantially perpendicular to said longitudinal axis of said body.
Claim 28
Dependent Claim
33 words
A device according to claim 24, wherein each of said electrode contact portion sections is substantially rectangular in shape having a longitudinal axis extending substantially perpendicular to said longitudinal axis of said body.
Claim 29
Dependent Claim
25 words
A device according to claim 21, wherein each of said ends of said body of insulating material is spaced from said body of said device.
Claim 30
Dependent Claim
14 words
A device according to claim 20, wherein said discrete electronic device is an inductor.
Claim 31
Dependent Claim
54 words
A device according to claim 20, wherein said discrete electronic device is an inductor comprising a core and a winding on said core and electrically connected to said leads, and said device further includes shield means surrounding a major portion of said inductor core and winding for containing magnetic flux from said inductor therein.
Claim 32
Dependent Claim
42 words
A device according to claim 29, wherein said end portion of each of said first and second electrode means has a surface area substantially equal to the surface area of the corresponding body end on which said electrode end portion is located.
Claim 33
Dependent Claim
13 words
A device according to claim 20, wherein said discrete electronic device is non-inductive.
Claim 34
Dependent Claim
42 words
A device according to claim 31, wherein said end portion of each of said first and second electrode means has a surface area substantially equal to the surface area of the corresponding body end on which said electrode end portion is located.
Claim 35
Independent Claim
153 words
A method of making a surface mountable electronic device comprising the steps of: a) providing a discrete electronic device comprising a body and a pair of spaced apart leads extending out from said body in generally different directions; b) encapsulating said device body and said leads in electrical insulating material in a manner shaping said material to provide a body having first and second spaced-apart ends and a mounting surface extending between said ends and to expose the ends of said leads; and c) applying first and second electrode means on said first and second ends of said body, respectively, and on adjacent regions of said mounting surface to be in electrical contact with the corresponding one of said leads and to provide contact portions extending along said mounting surface adjacent said ends for making electrical connection to a circuit having a portion defined on a surface to which said device is mountable.
Claim 36
Independent Claim
153 words
A method of making a surface mountable electronic device comprising the steps of: a) providing a discrete electronic device comprising a body and a pair of spaced apart leads extending out from said body in generally different directions; b) encapsulating said device body and said leads in electrical insulating material in a manner shaping said material to provide a body having first and second spaced-apart ends and a mounting surface extending between said ends and to expose the ends of said leads; and c) applying first and second electrode means on said first and second ends of said body, respectively, and on adjacent regions of said mounting surface to be in electrical contact with the corresponding one of said leads and to provide contact portions extending along said mounting surface adjacent said ends for making electrical connection to a circuit having a portion defined on a surface to which said device is mountable.
Claim 37
Dependent Claim
72 words
A method according to claim 33, wherein said step of encapsulating comprises: a) placing said discrete device in a mold shaped to define the desired shape of said surface mountable device; b) introducing said electrical insulating material to said mold in a manner filling said mold to encapsulate said discrete device and said leads; and c) allowing said electrical insulating material to set and then removing the encapsulating device from said mold.
Claim 38
Dependent Claim
86 words
A method according to claim 33, wherein said step of applying said first and second electrode means comprises: a) providing an electrode means having a first portion adapted to contact said body end and a second portion adapted to contact a region of said mounting surface adjacent said end; b) placing said first portion of said electrode means on said end and in electrical contact with the exposed end of said lead; and c) placing said second portion of said electrode means on said mounting surface.
Claim 39
Dependent Claim
92 words
A method according to claim 33, wherein said step of applying said first and second electrode means comprises; a) providing an electrode means having a plurality of spaced-apart end portions extending outwardly from the central portion and a corresponding plurality of contact portions extending from said end portions; b) placing said central portion and plurality of end portions simultaneously on said end with said central portion in electrical contact with the exposed end of said lead; and c) placing said contact portions on spaced-apart regions of said mounting surface adjacent said end.
Claim 40
Dependent Claim
61 words
A method according to claim 33, wherein said step of applying said first and second electrode means comprises: a) applying a first portion of said electrode means on said end and in electricially contact with the exposed end of said lead; and b) applying a second portion of said electrode means on a region of said mounting surface adjacent said end.
Claim 41
Dependent Claim
79 words
A method according to claim 33, wherein said step of applying said first and second electrode means comprises: a) applying a central portion and a plurality of spaced-apart end portions extending from said central portion to said end with said central portion in electrical contact with the exposed end of said lead; and b) applying a corresponding plurality of contact portions extending from corresponding ones of said end portions on spaced-apart regions of said mounting surface adjacent said end.
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