STP9NK80Z and STF9NK80Z are N-CHANNEL 800V -0.9Ω - 7.5A TO-220/TO-220FP Zener-Protected SuperMESH™MOSFETs. They have low on-resistance, high dv/dt capability, improved ESD capability, 100% avalanche rated, minimized gate charge, and very low intrinsic capacitances.