This part is a kind of semiconductor called D1264.

Function of this product has 2SD1264.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET SILICON POWER TRANSISTOR 2SD2164 NPN SILICON EPITAXIAL TRANSISTOR FOR LOW-FREQUENCY POWER AMPLIFIERS AND LOW-SPEED SWITCHING The 2SD2164 is a single power transistor developed especially for high hFE. This transistor is ideal for simplifying drive circuits and reducing power dissipation because its hFE is as high as that of Darlington transistors, but it is a single transistor. In addition, this transistor features a small resin insulated package, thus contributing to high-density mounting and mounting cost reduction. PACKAGE DRAWING (UNIT: mm) FEATURES • High hFE and low VCE(sat): hFE ≅ 1,300 TYP. (VCE = 5.0 V, IC = 0.5 A) VCE(SAT) ≅ 0.3 V TYP. (IC = 2.0 A, IB = 20 mA) • Full mold package that does not require an insulating board or insulation bushing ABSOLUTE MAX [ ... ]

D1264 PDF Datasheet Download