Вот тут есть ссылочки на нормативные доки ->. Плюс имеет значение материал ручки паяльника. http://www.elecraft.com/TechNotes/Ask_Dr_Solder.html
http://www.esda.org/documents/openforumhandtoolsprass08.pdf
Q: What is the meaning of "ESD-safe" in soldering stations? A: "ESD-safety" guarantees that static energy from your body (hands, etc.) will be "dumped" to ground via the plastic soldering iron handle or solder station plastic housing. Otherwise, the ESD would transfer to the soldering tip, thus destroying the IC you're soldering. The solder station essentially discharges your body's static charge to ground every time you pick up the soldering iron. (Naturally, you should take additional ESD precautions if you're handling *extremely* sensitive components -- and not rely on the solder station for all ESD-safety in the lab!)
http://www.esda.org/documents/openforumhandtoolsprass08.pdf
Q: What is the meaning of "ESD-safe" in soldering stations? A: "ESD-safety" guarantees that static energy from your body (hands, etc.) will be "dumped" to ground via the plastic soldering iron handle or solder station plastic housing. Otherwise, the ESD would transfer to the soldering tip, thus destroying the IC you're soldering. The solder station essentially discharges your body's static charge to ground every time you pick up the soldering iron. (Naturally, you should take additional ESD precautions if you're handling *extremely* sensitive components -- and not rely on the solder station for all ESD-safety in the lab!)