The BSH103BK from Nexperia is a MOSFET with Continous Drain Current 0.6 to 1 A, Drain Source Resistance 230 to 670 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.75 to 1.25 V. Tags: Surface Mount. More details for BSH103BK can be seen below.