This part is a kind of semiconductor called 2SK2054.

Function of this product has N-CHANNEL MOS FET FOR HIGH-SPEED SWITCHING.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET MOS FIELD EFFECT TRANSISTOR 2SK2054 N-CHANNEL MOS FET FOR HIGH-SPEED SWITCHING The 2SK2054 is a N-channel MOS FET of a vertical type and is a switching element that can be directly driven by the output of an IC operating at 5 V. This product has a low ON resistance and superb switching characteristics and is ideal for driving the actuators and DC/DC converters. PACKAGE DIMENSIONS (in mm) 5.7 ±0.1 2.0 ±0.2 1.5 ±0.1 3.65 ±0.1 FEATURES • New package intermediate between small-signal and power models • Can be directly driven by output of 5-V IC • Low ON resistance RDS(on) = 0.25 Ω MAX. @VGS = 4 V, ID = 1.5 A RDS(on) = 0.20 Ω MAX. @VGS = 10 V, ID = 1.5 A 1.0 0.5 ±0.1 S D 0.85 ±0.1 G 5.4 ±0.25 0.55 0.5 ±0.1 0.4 ±0.05 2.1 4.2 Marking: NA2 EQUIVALENT C [ ... ]

2SK2054 PDF Datasheet Download