STL18N60M2 N-channel 600 V, 0.278 Ω typ., 9 A MD.
STMicroelectronics
STL18N60M2 - N-channel Power MOSFET
STL18N60M2 N-channel 600 V, 0.278 Ω typ., 9 A MDmesh II Plus™ low Qg Power MOSFET in a PowerFLAT™ 5x6 HV package Datasheet - production data Features.