The IRHNJ57Z30 from Infineon Technologies is a MOSFET with Continous Drain Current 22 A, Drain Source Resistance 20 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for IRHNJ57Z30 can be seen below.