The Yageo HHV series 4.7MO is a high voltage & high ohmic resistor is made of metal glaze film with tinned connecting leads of electrolytic copper welded to the end-caps and the resistor is coated with layers of pink colour lacquer.Operating Temperature Range is -55°C to +155°CTemperature Coefficient is ±200pm/°CInsulation Resistance :in V-block for 60 Sec