Technical Library | 2017-06-15 00:44:19.0
Ceramics packages are being used in the electronics industry to operate the devices in harsh environments. In this paper we report a study on acoustic imaging technology for nondestructively inspecting underfill layers connecting organic interposers sandwiched between two ceramics substrates.First, we inspected the samples with transmission mode of scanning acoustic tomography (SAT) system, an inspection routine usually employed in assembly lines because of its simpler interpretation criteria: flawed region blocks the acoustic wave and appears darker. In this multilayer sample, this approach does not offer the crucial information at which layer of underfill has flaws. To resolve this issue, we use C-Mode Scanning in reflection mode to image layer by layer utilizing ultrasound frequencies from 15MHz to 120MHz. Although the sample is thick and contains at least 5 internal material interfaces, we are able to identify defective underfill layer interfaces.
Industry News | 2020-02-11 04:22:16.0
Providing process information and solving process defects is what I have been doing for many years with different organisations. In addition we have in the past created reports on 0201 assembly and testing of PCB surface finishes for lead-free assembly
Industry News | 2020-08-22 04:07:55.0
Indium Corporation will host an InSIDER Series webinar on causes and solutions of PCB and component warpage defects, presented by industry consultant Bob Willis. There will be two sessions on Wednesday, Sept. 9--5:30 a.m. Eastern Time (10:30 a.m. London Time, 5:30 p.m. Malaysia Time) and Noon Eastern Time (5 p.m. London Time, Midnight Malaysia Time).
Industry News | 2014-08-23 11:43:39.0
With one of the largest selection of online training material in the industry Bob Willis is providing his PowerPoint training material on line for other companies to use or help develop their own presentations on site.
Industry News | 2010-09-03 03:48:15.0
Bob Willis will be presenting a hands on x-ray inspection workshop with FREE x-ray book and the chance to win x-ray inspection CDs and inspection posters.
Industry News | 2012-06-17 10:57:29.0
Brand new technology center for visitors to SMTA International,See it, hear it and do it at SMTAI "Spend a couple of hours with the POP Team and you will have a significant advantage when specifying or implementing this technology in your future products" for further information visit http://www.smta.org/smtai/pop.cfm Bob Willis POP Center Coordinator
Industry News | 2012-10-12 04:01:50.0
Package On Package Assembly Inspection & Quality Control Guide is the first text book covering every step in this exciting manufacturing and design lead technology and its going to be available FREE.
Industry News | 2013-07-29 10:26:09.0
Technology webinars for the US time zone are being set up to help provided flexibility and also avoid engineers having to get up early in the morning. Bob Willis workshops in the US are supplemented with his on demand and online webinars.
Industry News | 2013-08-22 11:25:24.0
Bob Willis has the largest range of webinar and workshop topics in the industry and has just announced dates and time for US and European Time Zones
Industry News | 2014-06-19 03:54:09.0
Many organizations have successfully produced products for the high temperature and harsh environment markets for many years but there is little information on the practical issues in the public domain.
