Most electronic manufacturers use solder to stick ****ponents to PCBs. Whether it is a lead-free or a leaded solder, they all serve the same function. Nevertheless, various devices and use cases utilize different soldering techniques. Generally, leaded solder is ****posed of tin and lead. The advantage of using leaded solder is its adequate flowing capacity. It has a lower melting point than lead-free solder; hence, presenting less thermal effects to ****ponents. ********td-tungstenshielding****/lead-free/