Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I am about to try my first "reflow skillet" soldering job, and as I look at the available types of solder paste I see there are lead-free pastes with much lower melting temperatures than others. For example, this one from ChipQuik. The advantages seem obvious, but somehow the marketing literature does not mention any drawbacks to this type of solder paste.
Tinker Tailor Soldier Spy by John Le Carre - Literature review Example
Soldering: Types, Tools, Safety, Advantages, Applications & More
Many applications have a requirement for use of lead-free solder alloy. Sometimes this is due to the product falling under the RoHS Restriction of Hazardous Substances directive and sometimes it is a corporate directive. Some applications that fall under the RoHS directive are exempt from being lead-free because the reflow temperature requirements can only be met with high-lead solder alloys which are exempt under RoHS regulation. Each alloy has temperatures at which it changes from solid to liquid Figure 1. The phase change from the solid state to the liquid state begins upon reaching the solidus and ends upon reaching the liquidus.
Soldering: Types, Soldering Tools, Safety in Soldering and Advantages
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Insight into the thermo-mechanical response of solder joints is critical to the design and deployment of reliable electronic circuit board assemblies. Understanding the mechanics of lead-free soldered assemblies is also essential to the development of accelerated test plans, predictive reliability models and to their use as effective tools for product reliability assessment. The life of SnPb or lead-free solder joints is limited by the fatigue damage that accumulates in solder materials. Accelerated testing provides distributions of failure times whose relevance to service life is determined by extrapolation to use conditions based on the appropriate Acceleration Factors AFs.