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Electrochemical Migration (ECM), Conductive Anodic Filament (CAF) Formation and Surface Insulation Resistance (SIR) Testing

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Course Overview


Corrosion is responsible for more than 50% of microelectronic device failures. Electrochemical corrosion of metallic conductors, electrochemical migration or dendrite growth, and conductive anodic filament (CAF) formation on a printed wiring board can lead to circuit failures. It is important to understand the cause of these failures in order to select materials and processes for soldering and cleaning that will minimize the occurrence of these failures. This course thoroughly and systematically covers the causes and processes of electrochemical migration (ECM), dendrites formation, conductive anodic filament (CAF) formation, their effects on surface insulation resistance (SIR), and the industry standard methods and procedures for SIR testing.


This 1-day course is available for in-house training, online and distance learning worldwide. It can also be customized to meet the specific needs of your organization.


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

 Course Outline

1. Electrochemical Migration (ECM)

      1.1 Definition of Electrochemical Migration (ECM)
1.2 ECM Processes and Dendrites Formation
1.3 Reactions on the Anode
1.4 Reactions on the Cathode
1.5 Factors Influencing ECM and Dendrites Formation
1.6 Electrochemical Migration Testing
1.7 Electrochemical Migration (ECM) vs Electromigration (EM)
1.8 Electrochemical Migration Failure Analysis and Prevention


2.  Conductive Anodic Filament (CAF) Formation

2.1 Definition of Conductive Anodic Filament (CAF)

2.2 Mechanisms of CAF Formation and Growth

2.3 Factors Influencing CAF Formation
2.3.1 Substrate materials
2.3.2 Conductor configuration
2.3.3 Voltage gradient
2.3.4 Solder flux and HASL fluid
2.3.5 Cleaning
2.3.6 Temperature
2.3.7 Humidity

2.4 Catastrophic Field Failures Due to CAF Formation

2.5 Conductive Anodic Filament vs Dendrite

2.6 VPC-Compass-SE: A Software Tool for the Prediction and Modeling of Corrosion and Electrochemical Migration in Microelectronic Components


3.  Effects Surface Insulation Resistance (SIR) Testing

3.1 Definition of Surface Insulation Resistance (SIR)
3.2 Basic Principles of SIR Testing
3.3 The Importance of SIR Testing
3.4 Effects of Electrochemical Migration (ECM) and Conductive Anodic Filament (CAF) on SIR
3.5 SIR Testing: Industry Standards and Test Procedures
3.6 SIR Testing: IPC J-STD-004A vs J-STD-004B
3.7 SIR Testing: Factors Influencing SIR Test Results
3.8 SIR Testing: Hourly vs Daily Readings
3.9 SIR Testing: Pass/Fail Criteria
3.10 Failures During SIR Testing


4.  Exercises and Case Studies


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

 Who Should Attend


Engineers, designers, and QA/QC personnel working in the microelectronics and semiconductor industry.


 Registration for This  Corrosion Course


Click here to register for this corrosion course online, or

Click here to download this corrosion course brochure with registration form in PDF format.


 In-House Training Corrosion Courses and On-Site Training Corrosion Courses


If you are concerned with corrosion in your company, in-house training or on-site training is a great solution to train a group of employees from design, production, operation, quality assurance, inspection and maintenance, and technical sales and support on corrosion control and corrosion prevention technology. The contents of all our corrosion courses can be customized to fit your organization's needs.


There is no limit to the number of participants required for in-house training corrosion courses. We conduct the in-house training corrosion course at your company's premises worldwide, and at a time convenient to your company.


Click here to contact us for a quotation for in-house training corrosion courses.

 Corrosion Course-On-Demand


All our publicly scheduled corrosion short courses are conducted once a year. However, you do not need to wait for one year if you have missed any of the publicly scheduled corrosion courses as we have this unique corrosion course-on-demand scheme: we will conduct the course just for you (on an one-on-one basis) or for a small group from your company at a time and in a location convenient to you. This option costs significantly less than a full-scale in-house or on-site corrosion training program.


Click here to contact us for a quotation.

 Online Corrosion Courses and Distance Learning Corrosion Courses


All our corrosion short courses are available for online or offline distance learning. You can start an online corrosion course at any time and learn at your own comfortable pace and schedule, whenever and wherever you are. You have around-the-clock access to the interactive and media-rich course materials, virtual labs, course instructions and course assessments. Discussions and questions related to the corrosion courses are posted on the website or exchanged through email for a period up to 3 months. Video conferencing or instant messaging can also be arranged for discussions of course topics. For those who do not have ready access to internet, we can send you our online course materials on a CD-ROM, or DVD, or USB flash drive for offline distance learning.


Click here to to register an online corrosion short course.

 Corrosion Course-On-Webex


Webex is hosted by Cisco, a product purpose-built for real-time web communications. If you are an existing user of Webex, or if you are willing to experience the power of Webex, we can conduct the course for you over Webex with audio and video presentations and interactions with the course instructor and other course attendees in real-time. It is just like the physical classroom settings that everyone can interact with each other. Your questions will be answered in real time by our instructor.


Click here to contact us for a quotation.

 PowerPoint Slides and Test Banks for Trainers, Instructors, Tutors, University Lecturers and Professors


If you are involved in teaching or training, you may wish to purchase a complete set of the trainer's package for this training course. The trainer's package comes complete with ready-to-use PowerPoint slides (fully editable) and test bank (with answer keys). These ready-to-use PowerPoint slides contain high quality color photographs, illustrations, animations, audio and video clips. The test bank contains questions in four categories: (1) true or false, (2) multiple choice, (3) calculation, and (4) reasoning and open-ended discussions. The trainer's package is suitable for in-house training and university teaching. This is exactly the same package that WebCorr uses to deliver our current training course.

The one-time lump sum fee allows your organization to use the training package and also modify it. For example, your organization may modify the course contents and re-name/re-brand the course under your organizationís name. WebCorr only retains the copyright of the original PowerPoint slides and test bank.


Click here to contact us if you need more information on the trainer's package.


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