AP101 Series 100W TO-247 High Power Resistors. The AP101 series non-inductive TO-247 style thick film Power Resistors capable of dissipating 100 watts. The AP101 series benefits from new material technologies and an extremely low thermal resistance. TO-247 style power package capable of dissipating 100 watts Extremely low thermal resistance at 0.9°C/W resistor hotspot to metal tab Thick Film design Single screw mounting to heat sink Moulded case for protection Electrically isolated case Non-Inductive design Recommended: The use of thermal grease between metal tab and heat sink