The STN1NK80Z from STMicroelectronics is a MOSFET with Continous Drain Current 0.25 A, Drain Source Resistance 13000 to 16000 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Surface Mount. More details for STN1NK80Z can be seen below.