Patent US5164661A successfully refreshed from Google Patents.
US5164661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal control system for a semi-conductor burn-in
Assignee: Aetrium Inc
•
Filing: 1991-05-31
•
Granted: 1992-11-17
•
Expires: 2011-05-31
Abstract
Abstract An electronic component burn-in thermal control system which accurately and independently controls device case temperature with close-loop conductive heating is provided. A heat exchange device adapted to be placed in heat transfer relationship with the electronic component has a temperature profile different from that of the electronic component.
Inventors
- 👤 Elmer R. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:34
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2851; G01R31/2855; G01R31/2872; G01R31/2874; G01R31/2886; G01R31/2891
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
165 words
A system for burn-in of a device(s) under test (DUT) having a first temperature profile, said system comprising: a socket assembly including at least one socket for a DUT; a conductive module adpated to engage the socket assembly and in communication with the DUT, the module having: a heat-exchange device adapted to be placed in heat transfer relationship with the DUT, which heat exchange device has a second temperature profile; means to heat the heat exchange device; a DUT temperature sensor received within the heat exchange device and thermally isolated from the heat exchange device to measure the temperature of the DUT; and a temperature sensor received within the heat exchange device to measure the temperature of the heat exchange device; means to place the heat exchange device in heat transfer relationship with the DUT; and means to control the temperature of the DUT based on the sensed temperature of the heat exchange device and the temperature profiles of the DUT and heat exchange device.
Claim 2
Independent Claim
165 words
A system for burn-in of a device(s) under test (DUT) having a first temperature profile, said system comprising: a socket assembly including at least one socket for a DUT; a conductive module adpated to engage the socket assembly and in communication with the DUT, the module having: a heat-exchange device adapted to be placed in heat transfer relationship with the DUT, which heat exchange device has a second temperature profile; means to heat the heat exchange device; a DUT temperature sensor received within the heat exchange device and thermally isolated from the heat exchange device to measure the temperature of the DUT; and a temperature sensor received within the heat exchange device to measure the temperature of the heat exchange device; means to place the heat exchange device in heat transfer relationship with the DUT; and means to control the temperature of the DUT based on the sensed temperature of the heat exchange device and the temperature profiles of the DUT and heat exchange device.
Claim 3
Dependent Claim
21 words
The system of claim 1 which includes: means to establish upper and lower temperature limits for the temperature of the DUT.
Claim 4
Dependent Claim
41 words
The system of claim 1 which includes: means to establish a sequence of times for actuation of the heat exchange device at distinct temperature levels; and means to control the duration of actuation of the heater at each said temperature level.
Claim 5
Dependent Claim
59 words
The system of claim 1 which includes: a plurality of sockets, each socket having associated drive electronics; a conductive module for each DUT received in a socket; and means to control independently the actuation of each heat exchange device in the conductive module and to control the duration of actuation of each heat exchange device in each conductive module.
Claim 6
Dependent Claim
54 words
The system of claim 1 which comprises: a plurality of burn-in trays, each of said trays having at least one socket therein, a conductive module for each of said sockets; and means to control the actuation of each heater in each temperature controller independently and to control the duration of actuation of each heater.
Claim 7
Dependent Claim
36 words
The system of claim 1 which includes: means to moveably mount the heat exchange device within the conductive module to ensure flush contact of a heat exchange surface of the heat exchange device with the DUT.
Claim 8
Independent Claim
22 words
The system of claims 1 or 6 which includes: means to moveably mount the DUT temperature sensor within the heat exchange device.
Claim 9
Dependent Claim
16 words
The system of claim 7 wherein the DUT temperature sensor is mounted in a gimbal-like configuration.
Claim 10
Dependent Claim
30 words
The system of claim 8 wherein the DUT temperature sensor is moveably mounted within the heat exchange device and is adapted for movement independent of the movement of the heater.
Claim 11
Dependent Claim
43 words
The system of claim 1 which comprises a plurality of burn-in trays, each tray having a plurality of socket assemblies, each socket assembly having an associated conductive module, the burn-in trays having formed thereon drive electronics to apply a load to the DUT.
Claim 12
Dependent Claim
41 words
The system of claim 10 wherein the drive electronics comprises a mother board formed on the burn-in tray; and a daughter board formed on the socket assembly, the socket assembly providing for communication between the mother board and the daughter board.
Claim 13
Dependent Claim
19 words
The system of claim 10 which includes: means to control independently the drive electronics for each of the DUT's.
Claim 14
Dependent Claim
19 words
The system of claim 12 which includes: means to control independently the temperature applied to each of the DUT's.
Claim 15
Dependent Claim
39 words
The system of claim 13 wherein the means to control the temperatures applied to the DUT's comprises a thermal control board which communicates with each of the conductive modules and the means to control the temperature of the DUT.
Claim 16
Dependent Claim
14 words
The system of claim 14 wherein the first and second temperature profiles are distinct.
References Cited (Backward Citations)
US4145620A
Cited
US4503335A
Cited
US4607220A
Cited
US4777434A
Cited
US4978914A
Cited
US4900948A
Cited
US5001423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |