BUY 2SD2589 https://www.utsource.net/itm/p/1737442.html
Silicon NPN Triple Diffused Planar TransistorDarlingtonNPN
Description: 2SD2589 is a NPN power transistor manufactured by Sanken Electric Co., Ltd. Features: -High collector-emitter voltage: VCEO = 400V -High collector current: IC = 8A -High power dissipation: PD = 40W -Low saturation voltage: VCE(sat) = 1.5V -High frequency operation: fT = 150MHz Applications: -Switching regulators -DC-DC converters -Motor control -Power amplifiers -High voltage switching applications (For reference only)