Ersa Trainings
Qualified top results
Hardly any other market is as dynamic as the electronics industry. That is why it is so important, especially in this industry, that employees are always qualified to the latest technological standards. Electronics manufacturers at all levels are required to use available resources in the best possible way for reproducible results at the highest level. The solution is qualification!
As the No.1 system supplier for electronics production, Ersa also offers a wide variety of soldering courses, with the topics lead-free wave and selective soldering and solder paste printing and reflow soldering. The Ersa know-how seminars are an ideal platform for further training and for exchanging experiences with other participants. All know-how seminars and workshops are held in neutral lectures. Ersa attaches great importance to a balanced mix of theory and practice – and thanks to small groups of participants, the trainers can also respond to questions individually.
The Ersa Technology Days are put together and held individually for a company, so that an exchange of information is also possible across departments and locations. Whether manufacturer-independent or specifically geared to Ersa soldering systems – the Technology Days focus on the customer and his requirements. Whether customer-specific tech days, process technology and optimization or other topics from the field of soldering technology, the focus variations are as diverse as the soldering technology itself.
Numerous Ersa customers have already benefited from the individual Technology Days. In 2020, the exclusive Technology Days will also be available for the first time to users who purchase their products from EMS service providers or suppliers, e.g. auditors or quality managers. In addition to the face-to-face seminars, Ersa offers various online courses. The 60-minute webinars provide information on current topics in soldering technology, and questions can be put directly to the product managers. Soon, e-learning courses with direct help on the Ersa systems will supplement the extensive range of training courses. Whatever individual training needs may be, Ersa is prepared with a well thought-out qualification catalog for hand soldering, wave, reflow and selective soldering, stencil printing, basic training and customer-specific workshops.
Advantages Ersa Trainings
- Higher process reliability through trained employees
- Cross-department/location platform exchange for employees
- Distribution of know-how to several people
- Always one step ahead by using the latest technologies
- Future-oriented appearance on the market
- Individually combinable modular training courses (processes/plants) for stable manufacturing processes
High initial yield begins in stencil printing
Ersa Webinar “Defects in the printing process
and their consequences in the SMT line”
As a system supplier, Ersa also covers the entire spectrum of electronics production in its webinar series – including the topic “Defects in the printing process and their consequences in the SMT line”. In the fully booked 60-minute webinar, Ersa Product Manager Wolfram Hübsch illuminated stencil printing from all sides.
The aim of the printing process is to reduce errors to a minimum right from the start and thus keep costs within reasonable limits. In addition to the printing and reflow process, there are numerous influencing factors that can cause qualitative problems – such as the PCB, components, process, equipment used, environment and operator. For a high first pass yield (FPY), a sophisticated strategy is needed to balance productivity and quality.
Above all, it is worthwhile to take a closer look at the influencing variables of the printing process, since error potentials in the SMT process can account for almost two thirds – here too, zooming in on equipment (process times/capability, tolerances), process (squeegee parameters, cleaning, inspection), material (PCB, solder paste, stencil), environment and operator reveal possible improvements. Meanwhile, full-surface 3D inspection is considered standard – especially for the volume determination of small, very fine pads.
What is perfect stencil printing? It should be precisely shaped and print sharp-edged, flat solder depots with constant volume – an area printed up to 90% is considered “perfect”, up to 70% “sufficient” – with less than half the area printed the result is “unacceptable”. The aim of the SMT printing process is to achieve a sufficient volume for solder connections without solder bridges and with a constant solder volume after reflow soldering. The limit values for solder paste printing are determined by the printed solder area, bridging (not higher than 20%), volume and height. “Ersa carries out a machine capability test on all machines before leaving the factory – this means that at least 50 PCBs are measured and the repeatability is determined with two external cameras,” explains Wolfram Hübsch. In addition to tips on printing errors and stencil underside cleaning, there were also tried-and-tested tips on how to avoid gas inclusions called “gravestones”, solder beads or “voids” in QFN components.