Technical Library | 2020-11-09 16:59:53.0
A customer contacted ACI Technologies regarding a high failure rate of their assemblies. They provided assemblies to be X-rayed and inspected for the purpose of identifying any process related issues such as (but not limited to) solder and assembly workmanship and evidence of damage due to moisture related problems during reflow (a.k.a. "popcorning"). Moisture damage usually appears as physical damage to the component. The first indication of moisture damage would be externally observable changes to the package in the form of bulging or fractures to the outer surface of the component, an example of which is shown in Figure 1. Internally observable indicators of moisture damage typically include fractures to the die inside the package and lifted or fractured wire bonds. These conditions would be apparent during transmissive X-ray inspection. Another symptom of moisture related damage would be inconsistent solder joint sizes that result from package deformation during the liquidus phase of the reflow process. None of these indicators of moisture related damage were present on the customer samples.
Industry News | 2019-05-20 18:57:09.0
SMTA recently released the Guide to BGA Assembly & Soldering Defects, a complimentary resource for the electronics manufacturing industry. The book was written by Keith Bryant, industry veteran and Chairman of the SMTA Europe Chapter, and reviewed by members of the SMTA Europe Technical Committee.
Industry News | 2011-12-14 15:35:33.0
Manufacturing processes, handling and printed circuit assembly (PCA) test can put a lot of mechanical stresses on packages, causing failures. As grid array packages get larger, identifying how to set safe levels for these steps becomes more difficult. A new quantitative test methodology within IPC/JEDEC-9707, Spherical Bend Test Method for Characterization of Board Level Interconnects, lets users determine how much strain packages can take before reliability degradation.
Industry News | 2009-03-12 18:15:08.0
SMTA Boston will be held April 22-23, 2009 at the Boston Convention Center in conjunction with Electronics New England and NEPCON East.
Industry News | 2009-02-03 13:34:04.0
New PCB Rework, Repair, Fabrication Training & Consulting Services.
Events Calendar | Mon Apr 23 00:00:00 EDT 2018 - Thu Apr 26 00:00:00 EDT 2018 | Shanghai, China
SMTA China East Conference 2018
Events Calendar | Thu Mar 18 00:00:00 EDT 2021 - Thu Mar 18 00:00:00 EDT 2021 | ,
India Chapter Webinar: PCBA Process Qualifications
Industry News | 2012-01-22 23:16:58.0
More than 350 engineers who attended last week’s IPC webinar, Soldering and Assembly Defects, were polled on their biggest headaches with printed boards, PCB components and PCB assembly process failures. The survey results which identify solder finish, ball grid array (BGA) components and reflow soldering as the greatest challenges, provide webinar co-sponsor, National Physical Laboratory (NPL) of the United Kingdom with useful information as it prepares its NPL Process Defect Clinic for IPC APEX EXPO® 2012.
Industry News | 2013-01-30 17:54:43.0
Design, assembly, inspection and repair personnel have a new tool to help improve reliability of ball grid arrays (BGAs) and fine-pitch ball grid arrays (FBGAs) in high density applications, thanks to the newly released C revision of IPC-7095, Design and Assembly Process Implementation for BGAs.
Industry News | 2009-03-12 18:25:36.0
The SMTA International Technical Committee invites you to submit an abstract for the 2009 conference. Short course descriptions are also being solicited.
