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Webtorial: Reflow - Understanding the Complete Process & Defect Prevention

Presenter: Bob Willis
Company: bobwillis.co.uk
Date Published: 11/14/2017

Description: The session includes solder paste testing, different reflow methods, reliable solder joint formation on high and low temperature and causes and cures of most common failures. Here we examine the most common process issues seen in the industry and how design, board selection and process materials can cause issues in manufacture. We look at the fundamentals of reflow with convection and vapour phase to understand the cause of failures.

With over 40 years in industry and 30 solving process problems for industry Bob Willis explains the causes and curses of most reflow issues seen in industry. Bob's session features many unique process video clips on testing and failures and make his sessions come alive providing a much better understanding of the root cause of failure and corrective action.

Topics include:

  • Design for reflow soldering
  • Selecting the best solder paste
  • Fundamentals of solder joint formation
  • Optimising your reflow process
  • Correct profiling procedures
  • Correct PCB finish for your process
  • Common soldering problems and why they occur
  • Reliability of solder joints
  • Practical testing of solder joints

    Bio:
    Bob Willis currently operates a training and consultancy business based in England. Bob is a member of the SMART Technical Committee. Although a specialist for companies implementing Surface Mount Technology Mr Willis provides training and consultancy in most areas of electronic manufacture. He has worked with the GEC Technical Directorate as Surface Mount Co-Coordinator for both the Marconi and GEC group of companies and prior to that he was Senior Process Control Engineer with Marconi Communication Systems, where he had worked since his apprenticeship. Following his time with GEC he became Technical Director of an electronics contract manufacturing company where he formed a successful training and consultancy division.

    As a process engineer, he was involved in all aspects of electronic production and assembly involved in setting up production processes and evaluating materials; this also involved obtaining company approval on a wide range of Marconi's processes and products including printed circuit board manufacture. During the period with Marconi, experience was gained in methods and equipment for environmental testing of components, printed boards and assemblies with an interest developed in many areas of defect analysis. Over the last 15 years he has been involved in all aspects of surface mounted assembly, both at production and quality level and during that time has been involved in training staff and other engineers in many aspects of modern production.

    Over the past few years Mr. Willis has travelled in the United States, Japan, China, New Zealand, Australia and the Far East looking at areas of electronics and lecturing on electronic assembly. Mr. Willis was presented with the Paul Eisler award by the IMF (Institute of Metal Finishing) for the best technical paper during their technical programmes. He has conducted SMT Training programs for Texas Instruments and is currently course leader for Reflow and Wave Soldering Workshops in the United Kingdom. Mr Willis is an IEE Registered Trainer and has been responsible for training courses run by the PCIF originally one of Europe's largest printed circuit associations. Bob has conducted workshops with all the major organisations and exhibition organisers World Wide and is known for being an entertaining presenter and the only presenter to use unique process video clips during his workshops to demonstrate each point made. Bob has written two book which are free to download on line, Design & Assembly with Pin In Hole Intrusive Reflow & Package On Package Design, Assembly and Inspection.

    Mr. Willis was Chairman of the SMART Group, European Surface Mount Trade Association from 1990-94 and has been elected Honorary Life President and currently holds the position of SMART Group Technical Director, he also works on BSI Standards Working Parties. He is a Fellow of the Institute Circuit Technology, an NVQ Assessor, Member of the Institute of Quality Assurance and Society of Environmental Test Engineers. Bob Willis currently writes regular features for AMT Ireland, Asian Electronics Engineer and Circuits Assembly the US magazine. He also is responsible for writing each of the SMART Group Charity Technology reports, which are sold in Europe and America by the SMTA to raise money for worthy causes. Bob ran the SMART Group PPM Monitoring Project in the United Kingdom supported by the Department of Trade and Industry. He was coordinator of the LEADOUT Project for SMART Group. LEADOUT was one of the largest EU funded projects, currently he is coordinating European projects TestPEP, uBGA and ChipCheck.

    In September 2015 Bob voted the Best Speaker at SMTA International Conference in Chicago, USA.

  • Key Words: 

    reflow soldering



    Pricing:
      Members: $200.00 (Log on to receive the member rate)
      Non-Members: $275.00



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