This part is a kind of semiconductor called 45N03LT.
Function of this product has PHP45N03LT.
Manufacturers : Philips Semiconductors
Image and pinout :
Some of the text within the PDF file :
Philips Semiconductors TrenchMOS™ transistor Logic level FET Product specification PHP45N03LT FEATURES • ’Trench’ technology • Very low on-state resistance • Fast switching • Stable off-state characteristics • High thermal cycling performance • Low thermal resistance SYMBOL g d s QUICK REFERENCE DATA VDSS = 30 V ID = 45 A RDS(ON) ≤ 24 mΩ (VGS = 5 V) RDS(ON) ≤ 21 mΩ (VGS = 10 V) GENERAL DESCRIPTION N-channel enhancement mode logic level field-effect power transistor in a plastic envelope using ’trench’ technology. The device has very low on-state resistance. It is intended for use in dc to dc converters and general purpose switching applications. The PHP45N03LT is supplied in the SOT78 (TO220AB) conventional leaded package. PINNING PIN DESCRIPTION 1 gate [ ... ]