AP830 R2 J 200mΩ 30W Fixed Resistor ±5% AP830 R2 J. The AP830 series Non-inductive 25 Watt high power T0-220 resistor pack with a very low thermal resistance. Applications for the AP830 series include:- High frequency emitter circuits in switching power supplies; voltage regulation; low energy pulse loading; Motor control circuits; Motor drive circuits