AP836 Series 35 Watts TO-220 High Power Resistors. The AP836 series Non-inductive 35 Watt high power T0220 resistor pack with a very low thermal resistance. Applications for the AP836 series include:- High frequency emitter circuits in switching power supplies; voltage regulation; low energy pulse loading. 35 Watts at 25 C case temperature on heat sink (Using thermal grease) Single Moulded case for protection Easy to mount to heat sink via single screw mounting hole Electrically isolated case