nss40601cf8t1g.pdf datasheet:

NSS40601CF8T1G40 V, 8.0 A, Low VCE(sat)NPN TransistorON Semiconductor's e2PowerEdge family of low VCE(sat)transistors are miniature surface mount devices featuring ultra lowsaturation voltage (VCE(sat)) and high current gain capability. Thesehttp://onsemi.comare designed for use in low voltage, high speed switching applicationswhere affordable efficient energy control is important.Typical applications are DC-DC converters and power management40 VOLTS, 8.0 AMPSin portable and battery powered products such as cellular and cordlessNPN LOW VCE(sat) TRANSISTORphones, PDAs, computers, printers, digital cameras and MP3 players.EQUIVALENT RDS(on) 31 mWOther applications are low voltage motor controls in mass storageproducts such as disc drives and tape drives. In the automotiveCOLLECTORindustry they can be used in air bag deployment and in the instrument1