Electronics Forum | Thu Oct 26 13:56:08 EDT 2000 | ptvianc
Hello: Pre-baking laminates should only be performed:(1) to meet contractual agreements or (2) in response to an actual defect that can be traced to PWB water absortion. Besides the fact that a pre-bake is an enormous process "bottleneck," it also
Electronics Forum | Mon May 16 22:59:40 EDT 2005 | davef
We believe your problem is caused by the mismatch in CTE of the material ised in your BGA. In fact, this "potato chipping" [where the corners curl-up] is present in all BGA. The issue is the matter of degree. [Mismatching CTE is how old thermostats
Industry News | 2014-02-18 10:31:01.0
Isola Group S.à r.l. announced today that GETEK® laminates and prepegs are now in production at its facility in Düren, Germany, which will shorten lead times to Isola's European customers.
Industry News | 2013-12-18 15:18:53.0
Isola Group had successfully transitioned the manufacturing of its low-loss, I-Speed material to Asia. The move was in response to an increased demand for I-Speed products. The cost benefits of manufacturing in Asia have enabled a price reduction of I-Speed for printed circuit board (PCB) fabricators located in the Asia-Pacific region.
Technical Library | 2013-01-09 18:31:54.0
The increased temperatures associated with lead free processes have produced significant challenges for PWB laminates. Newly developed laminates have different curing processes, are commonly filled with ceramic particles or micro-clays and can have higher Tg values. These changes designed to reduce Z-axis expansion and improve the materials resistance to thermal excursions through primary attach and rework operations have also produced harder resin systems with reduced fracture toughness.
Technical Library | 2019-02-20 16:35:24.0
The High Density Packaging (HDP) User Group has completed a project evaluating the high frequency loss impacts of a variety of imaged core surface treatments (bond enhancement treatments, including chemical bonding and newer low etch alternative oxides) applied just prior to press lamination. Initial high frequency Dk/Df electrical test results did not show a strong correlation with any of the methods utilized within this project to measured surface roughness. The more significant factor affecting the measured loss is the choice of pre-lamination surface treatment. Most of the new chemical treatment systems outperform the older existing systems which depend upon surface roughness techniques to promote adhesion.
SMT Express, Issue No. 4 - from SMTnet.com Volume 1, Issue No. 4 Tuesday, September 14, 1999 Featured Article Return to Front Page MULTILAYER BOARD (MLB) CONSTRUCTIONS FOR HIGHEST LAMINATE INTEGRITY, DIMENSIONAL STABILITY, AND ELECTRICAL
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/journal.cfm
. SMTA JOURNAL ARTICLES: 1999 - Present Allow time for larger file downloads. YEAR VOL. TITLE AUTHOR 2019 32-3 Characterization of Soldered Plated Through Holes (PTHs
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/last-will-of-bga-void.pdf
The Last Will And Testament of the BGA Void THE LAST WILL AND TESTAMENT OF THE BGA VOID David Hillman, Dave Adams, Tim Pearson, Brad Williams, Brittany Petrick, and Ross Wilcoxon Rockwell Collins
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