Panasonic ERJ-UP3 Thick-Film Resistors resistors offer anti-surge and anti-sulfurization characteristics. The high resistance to sulfurization is achieved by adopting anti-sulfurated electrode material. Panasonic ERJ-UP3 Anti-Surge and Anti-Sulfurization Resistors provide high reliability through a metal glaze thick-film resistive element and three layers of electrodes. The electrostatic discharge (ESD) surge characteristics of this resistor series is superior to standard metal-film resistors.