The application of nitrogen in the field of SMT electronics is the main component of air. It is a colorless, odorless, non-toxic and non-flammable gas at room temperature and atmospheric pressure. The boiling point is -195.8 °C, and its chemical properties are inactive. In addition to synthetic ammonia, nitrogen is usually used as a protective gas for metallurgy, chemicals, coal, food, medicine, electronics, magnetic materials, transportation, heat treatment, tires, thermoelectricity, aviation and other industries. Nitrogen is widely used in the production of packaging, wafers, LED/LCDs, lithium batteries, and polymer batteries, especially in SMT reflux welding and peak welding.
