Truohm knp series 3w wirewound resistors 5 truohm knp 300s 68r a 6r8 wirewound resistor wound on a ceramic former with flame retardant silicone resin coating that offers high resistance stability excellent heat dissipation and low noise truohm knp 300s 68r knp series 6r8 5 3w axial wirewound resistor