US4725775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor isolated burn-in socket board
Assignee: ENVIRONMENTAL PROCESSING Inc
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Filing: 1986-06-12
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Granted: 1988-02-16
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Expires: 2006-06-12
Abstract
Abstract An improved semiconductor burn-in socket assembly board test device includes a plurality of sockets having apertures formed in the cavity bottoms, spring clip type female connectors rigidly mounted in the socket cavities for engaging male connector pins of semiconductor devices (dual-in-line packages, for example), and male connector pins depending from the cavity bottoms. Cermet resistors are rigidly fixed within the cavity bottom apertures, and soldered to the female and male connectors whereby a semiconductor burn-in test board is provided having isolation resistors vertically disposed with respect to the socket's female and male connectors and within the thickness of the socket bottoms.
Inventors
- 👤 Tommy E. McMinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:09
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2851; G01R31/2855; G01R31/286; G01R31/2863; G01R1/00; G01R1/02; G01R1/04; G01R1/20; G01R1/203; H; H01; H01C; H01C1/00; H01C1/01; H01R; H01R13/00; H01R13/66; H01R13/6608; H01R13/6616; H05; H05K; H05K7/00; H05K7/02; H05K7/10; H05K7/1092
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
169 words
An imporved testing apparatus for semiconductor devices comprising: (a) a housing having side walls and a bottom, said side walls and bottom having preselected dimensions, the side walls coacting with the bottom for forming a plurality of socket wells, and the bottom having a plurality of apertures forming bottom passages into the socket wells; (b) a plurality of female connector means mounted in the socket wells for receiving connecting pins of a semiconductor device to be tested; (c) a plurality of resistors, said resistors mounted in the apertures forming bottom passages into the socket wells, said resistors having first and second ends, the first ends being connected to the female connector means and the second ends terminating within the apertured bottom; and (d) a plurality of male connector means, said male connector means having ends connected to corresponding second ends of the resistors, and body portions extending externally of the bottom for connection to a burn-in board, whereby th testing apparatus is adapted for use in existing burn-in equipment.
Claim 2
Dependent Claim
169 words
An imporved testing apparatus for semiconductor devices comprising: (a) a housing having side walls and a bottom, said side walls and bottom having preselected dimensions, the side walls coacting with the bottom for forming a plurality of socket wells, and the bottom having a plurality of apertures forming bottom passages into the socket wells; (b) a plurality of female connector means mounted in the socket wells for receiving connecting pins of a semiconductor device to be tested; (c) a plurality of resistors, said resistors mounted in the apertures forming bottom passages into the socket wells, said resistors having first and second ends, the first ends being connected to the female connector means and the second ends terminating within the apertured bottom; and (d) a plurality of male connector means, said male connector means having ends connected to corresponding second ends of the resistors, and body portions extending externally of the bottom for connection to a burn-in board, whereby th testing apparatus is adapted for use in existing burn-in equipment.
Claim 3
Dependent Claim
28 words
An improved testing apparatus according to claim 1 wherein, the housing is made of a non-conductive material taken from the group consisting of ceramics and thermal setting plastics.
Claim 4
Dependent Claim
35 words
An improved testing apparatus according to claim 1 wherein, each female connector of the plurality of female connector means includes a strip of conductively coated resilient material having a shape substantially that of FIG. 4.
Claim 5
Dependent Claim
76 words
An improved testing apparatus according to claim 1 wherein each female connector of the plurality of female connector means includes a strip of resilient conductor material having first and second ends fixed adjacent to the tops of socket well forming walls and extending into the cavity of the socket to form a spring type clip intermediate to the top and bottom of the socket and a resistor connecting terminal adjacent to the bottom of the socket.
Claim 6
Dependent Claim
33 words
An improved testing apparatus according to claim 4, wherein the resistor connecting terminal of the female connector has a contour corresponding to that of an end of the resistor to be connected thereto.
Claim 7
Dependent Claim
41 words
An improved testing apparatus according to claim 1 wherein eachmale connector of the plurality of male connector means includes a strip of conductive material having an end contour corresponding to that of an end of the resistor to be connected thereto.
Claim 8
Dependent Claim
30 words
An improved testing apparatus according to claim 1 wherein each resistor of the plurality of resistors has solder type terminal ends for solder connection to the female and male connectors.
Claim 9
Dependent Claim
35 words
An improved testing apparatus according to claim 1 wherein glass frits are used to rigidly mount the plurality of resistors in the apertures of the plurality of apertures forming bottom passages into the socket wells.
Claim 10
Dependent Claim
16 words
An improved testing apparatus according to claim 1 wherein the plurality of resistors are cermet resistors.
Claim 11
Dependent Claim
132 words
An improved testing apparatus for semiconductor devices comprising: (a) a burn-in support means having a plurality of female connectors; and (b) a resistor isolated test board including a socket assembly means having walls and bottoms forming a plurality of sockets, a plurality of female connectors mounted within the plurality of sockets, a plurality of resistors rigidly mounted within the bottoms of the sockets, said resistors having first and second ends, the first ends connected to the plurality of female connectors, and a plurality of male connectors connected to the second ends of the plurality of resistors, said plurality of male connectors depending from the socket bottoms and corresponding to the plurality of female connectors of the burn-in support members for connection thereto, whereby an improved testing apparatus for semiconductor devices is provided.
Claim 12
Dependent Claim
132 words
An improved testing apparatus for semiconductor devices comprising: (a) a burn-in support means having a plurality of female connectors; and (b) a resistor isolated test board including a socket assembly means having walls and bottoms forming a plurality of sockets, a plurality of female connectors mounted within the plurality of sockets, a plurality of resistors rigidly mounted within the bottoms of the sockets, said resistors having first and second ends, the first ends connected to the plurality of female connectors, and a plurality of male connectors connected to the second ends of the plurality of resistors, said plurality of male connectors depending from the socket bottoms and corresponding to the plurality of female connectors of the burn-in support members for connection thereto, whereby an improved testing apparatus for semiconductor devices is provided.
Claim 13
Dependent Claim
59 words
An improved testing apparatus according to claim 10, wherein the burn-in support means includes a variable resistor means connected to the plurality of female connectors and a resistance selector means connected to the variable resistor means whereby when the variable resistance means is connected to a source of power, selected resistances are connected to the plurality of female connectors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |