This part is a kind of semiconductor called A1742.

Function of this product has 2SA1742.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET SILICON POWER TRANSISTOR 2SA1742 PNP SILICON EPITAXIAL TRANSISTOR FOR HIGH-SPEED SWITCHING The 2SA1742 is a power transistor developed for high-speed switching and features a high hFE at low VCE(sat). This transistor is ideal for use as a driver in DC/DC converters and actuators. In addition, a small resin-molded insulation type package contributes to high-density mounting and reduction of mounting cost. FEATURES • High hFE and low VCE(sat): hFE ≥ 100 MIN. @VCE = −2.0 V, IC = −1.5 A VCE(sat) ≥ −0.3 V MAX. @IC = −4.0 V, IB = −0.2 A • Full-mold package that does not require an insulating board or bushing ABSOLUTE MAXIMUM RATINGS (TA = 25°C) Parameter Collector to base voltage Collector to emitter voltage Emitter to base voltage Collector current (DC) Collect [ ... ]

A1742 PDF Datasheet Download