The MRH15N19U3SF from Microchip Technology is a RF Transistor with Duty_Cycle 2%, Breakdown Voltage - Drain-Source 150 V, Voltage - Drain-Source (Vdss) 150 V, Voltage - Gate-Source (Vgs) ±20 V, Drain Current 12.7 to 19 A. Tags: Surface Mount. More details for MRH15N19U3SF can be seen below.