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Record W4416881061 · doi:10.37665/smiwgew72664

Ceramic Grid Array Technologies for ACPI Applications

2000· article· W4416881061 on OpenAlex
R.N. Master, O.T. Ong

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueSMTA International · 2000
Typearticle
Language
FieldComputer Science
TopicParallel Computing and Optimization Techniques
Canadian institutionsAdvanced Micro Devices (Canada)
Fundersnot available
KeywordsBall grid arrayCeramicSolderingReliability (semiconductor)GridSurface-mount technologyPower (physics)Column (typography)

Abstract

fetched live from OpenAlex

ABSTRACT Current desktop and consumer applications for microprocessors require that systems be Energy Star compliant. In addition, other power management initiatives such as Advanced Configuration Power Interface (ACPI) define low power system states that the operating system controls. These initiatives are directed at reducing the energy consumption of desktop computer equipment during periods of inactivity as well as providing quick resumption of activity. From an electronic packaging perspective, systems will power down more often when not in use during typical conditions of daily use. Each power down cycle may result in a temperature excursion and affects the fatigue life of area array solder joints. This requirement results in the need of increased reliability of soldered surface mount ceramic packages. Although there is a generic definition of the Energy Star (ACPI) requirement, there is disagreement on what it means to the fatigue life of the solder joints. Results of our industry survey will be presented. Conclusions from this survey led us to investigate various ceramic grid array technologies. Conventional Ceramic Ball Grid Array can not meet the increased reliability requirements; especially at high pin counts and high number of on/off cycles. In this paper we discuss the technologies that allow solutions to increase the fatigue life to meet the ACPI requirements. The solutions are based on matching the TCE of the ceramic to board and a novel column grid array called solder column Interposer. We have compared this to the conventional ceramic ball and column grid array. We will describe the manufacturing process for these technologies and results of board level reliability testing. We will show that both high TCE ceramic and solder column interposer are capable of meeting the ACPI needs of increased cycling and resulting fatigue. Solder Column Interposer is in high volume production at AMD.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.881
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0030.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.016
GPT teacher head0.285
Teacher spread0.269 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it