For thermistors, Littelfuse offers two styles: surface-mount devices for easy assembly or glass encapsulated devices which are sealed against the environment for long-term reliability. The RB Series surface mount end-banded thermistor elements are designed for use on hybrid substrates, integrated circuits or printed circuit boards. Solder coated metallization is suitable for various contact techniques including wire bond, epoxy or solder. The SM Series and DO-35 hermetically sealed, glass encapsulated thermistors provide excellent long-term reliability and stability even when subjected to severe environmental conditions.