Reflow Cycle via Reliability Impact
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.
Bibliographic record
Abstract
ABSTRACT This paper investigates the impact of reflow cycle parameters on via reliability in printed circuit boards (PCBs). The primary objective was to determine how variations in ramp rate, peak temperature, dwell time, and soak time influence the integrity and reliability of plated through hole (PTH) vias. Using a 20-layer commonly used high Tg FR4 test board with 10 mil through holes, a series of typical assembly reflow profiles based on SAC 305 solder were tested using Interconnect Stress Testing (IST)[8]. Key findings indicate that peak temperature and time near peak temperature are the most significant factors affecting via reliability. The paper also highlights the importance of interactions between variables, particularly the three-way interaction of peak temperature, time near peak, and soak time. The results demonstrate that while ramp rate alone is not statistically significant, its interactions with other variables are crucial. All work was conducted through the HDP User Group International Consortium under the project titled Reflow Cycle Via Reliability Impact, facilitated by Jack Tan. All raw data and full versions of the project documents are available to member companies ( www.hdpusergroup.org ).
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 imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it