The problem with soldering QFN packages is that they float, skew and tilt on the 'domed' melted solder during the SMT re-flow process. This floating, skewing and/or tilting will lead to solder bridging or un-solders. These defects are hard to detect until the assembly reaches test. Troubleshooting these elusive defects can be very time consuming and costly leading to rework, replacement parts, possible late deliveries and eventually the high cost of a re-design.
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BGA Reflow -
We recently got our last BGA X-Ray results back (no X-ray in house yet) and had more than one board/BGA look like the attached image...
Flying Diode -
Currently, we encountered that the schottky barrier diode was up side down or misalignment during SMT process...
CAD Export issue: S.O.S -
I'm having an issue where the cad I'm getting from customers is referencing pin 1 as the parts placement...
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SMTA Webtorial - Conformal Coating
Online Webinar | Thu, June 9 | Sponsored by: SMTA
This webinar will cover the basics of conformal coating and assumes no prior knowledge of coatings...
Why Clean Electronic Assemblies? - Free Workshop
Online Webinar | Tue, June 14 | Sponsored by: ZESTRON Corporation
The workshop will introduce the most important key elements needed for a successful PCB cleaning process...
Green Manufacturing Expo 2011
Trade Show/Exhibition, Conference | Toronto, Ontario, Canada | Tue, June 21 | Sponsored by: UBM Canon
Hundreds of sustainable manufacturing resources for long-term cost savings, improved process efficiency...
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Atlanta, GA, USA | Venture Engineering
Materials Engineer and Lab Supervisor
Milpitas, CA, USA | Winslow Automation (aka Six Sigma)
Regional Sales Manager
TX, AZ, NM, USA | Vi Technology
SMT Maintenance Technician & Process Engineering
Fredericksburg, VA, USA
SMT Engineering Professional
Nashville, NC, USA
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SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. Membership Info | SMTA Certification | Bookstore
Next Event: Space Coast Chapter Expo, Technical Forum and Barbeque - June 9
IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info | Training & Certification Programs | Standards & Publications - Online Store
Next Event: EMS Training II - June 9-10
June 9, 2011