WMZ12A-120L121VSP280B10-G6B with PTC Thermistors Through Hole RoHS manufactured by Tyohm is a thermistor-type resistor, meaning it is temperature-sensitive. It has a resistance value of 120 Ohms and has a voltage rating of 280V (B10) and a6-millimeter “Through Hole” for mounting the component. It is also compliant with the Restriction of Hazardous Substances (RoHS) directive, meaning it is free from hazardous substances. The Tyohm wattage rating is 12 watts.