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EP0074817A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Carrier for integrated circuit

Assignee: Texas Instruments Inc
•
Filing: 1982-09-10
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Granted: —
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Expires: 2002-09-10
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Abstract

Abstract A surface mounted integrated (lC) device package or carrier 210 is disclosed suitable for accommodating large terminal count IC devices in a small space. A carrier 210, preferably of plastic, is disclosed having notches 226 or castillations in its sides. A first row of leads 228 are positioned in the periphery of the package and a second row of leads 230 are positioned in the notches, said notches formed a predetermined distance from the periphery of the package (e.g., 0.050"). Selected leads of the second row are alternated with said first row of leads. In the preferred embodiment, the first and second leads 226 and 228 are separated by 0.025". Also in the preferred embodiment, the first and second row of leads extend over protuberances into depressions in the bottom of the package. Each of the depressions is separated by ribs from the other depressions such that the ends of the leads are disposed in the depressions and are prevented from substantial movement, thereby preventing contact with adjacent leads.

Inventors

  • 👤 John W. Orcutt

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 09:13
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/15; H10W76/157; H10W70/00; H10W70/40; H10W70/421; H10W70/424; H10W70/427; H10W70/429; H10W78/00; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3421

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 56 words
A surface mounted high terminal count IC device package comprising an enclosure having a top and bottom and having a plurality of notches in its periphery, on a selected part of one side, a first set of leads formed on the periphery of said one side, and a second set of leads formed in said notches.
Claim 2
Dependent Claim 56 words
A surface mounted high terminal count IC device package comprising an enclosure having a top and bottom and having a plurality of notches in its periphery, on a selected part of one side, a first set of leads formed on the periphery of said one side, and a second set of leads formed in said notches.
Claim 3
Dependent Claim 18 words
A surface mounted high terminal count IC device package according to Claim 1 wherein said enclosure is plastic.
Claim 4
Dependent Claim 36 words
A surface mounted high terminal count IC device package according to Claim 1 wherein said enclosure is four sided and said notches are formed on all four sides of said enclosure and are rectangular in shape.
Claim 5
Dependent Claim 25 words
A surface mounted high terminal count IC device package according to Claim 1 wherein the distance between the first and second leads is approximately 0.025".
Claim 6
Dependent Claim 39 words
A surface mounted high terminal count IC device package according to Claim 1 further including at least one protuberance extending beyond the bottom of said enclosure with said first and second leads bent around said at least one protuberance.
Claim 7
Dependent Claim 47 words
.6. A surface mounted high terminal count IC device package according to Claim 5 wherein a plurality of protuberances are located such as to be aligned with each of said first and second set of leads such that said leads are bent around each of said protuberances.
Claim 8
Dependent Claim 47 words
A surface mounted high terminal count IC device package according to Claim 6 wherein each of said protuberances extends beyond the bottom of said enclosure and the bottom of said enclosure has depressions therein located adjacent said protuberances to accomodate the end of each of said leads.
Claim 9
Dependent Claim 79 words
A carrier for an integrated circuit comprising (a) a plastic enclosure having a top and bottom of approximately equal dimensions, two pairs of parallel lateral sides extending between said top and bottom at right angles thereto, a plurality of notches selectively formed in the periphery of each of the lateral sides, and (b) a first row of metallic leads located on the periphery of said enclosure and a second row of metallic leads located in each of said notches.
Claim 10
Dependent Claim 79 words
A carrier for an integrated circuit comprising (a) a plastic enclosure having a top and bottom of approximately equal dimensions, two pairs of parallel lateral sides extending between said top and bottom at right angles thereto, a plurality of notches selectively formed in the periphery of each of the lateral sides, and (b) a first row of metallic leads located on the periphery of said enclosure and a second row of metallic leads located in each of said notches.
Claim 11
Dependent Claim 44 words
A carrier for an integrated circuit according to Claim 8 wherein each of the metallic leads has one end within said enclosure and extends out of said enclosure through said lateral side, then parallel to said lateral side and back under said bottom side.
Claim 12
Dependent Claim 52 words
A carrier for an integrated circuit according to Claim 9 further including a plurality of rounded protuberances extending beyond the bottom side of said enclosure and a plurality of depressions located adjacent to each protuberance whereby each of said leads bend over the rounded protuberance into the depression to prevent movement thereof.

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