This part is a kind of semiconductor called S9014.

Function of this product has NPN Silicon Transistor.

Manufacturers : AUK corp

Image and pinout :

Some of the text within the PDF file :

7 Semiconductor STS9014 NPN Silicon Transistor Description • General purpose application • Switching application Features • Excellent hFE linearity : hFE(IC=0.1 mA) / hFE(IC=2 mA) = 0.95(Typ.) • Low noise : NF=10dB(Max.) at f=1KHz • Complementary pair with STS9015 Ordering Information Type NO. STS9014 Marking STS9014 Package Code TO-92 Outline Dimensions 3.45±0.1 4.5±0.1 2.25±0.1 unit : mm 4.5±0.1 0.4±0.02 2.06±0.1 14.0±0.40 1.27 Typ. 2.54 Typ. 1 2 3 1.20±0.1 PIN Connections 1. Emitter 2. Base 3. Collector 0.38 KST-9017-000 1 STS9014 Absolute maximum ratings Characteristic Collector-Base voltage Collector-Emitter voltage Emitter-Base voltage Collector current Emitter current Collector dissipation Junction temperature Storage temperature (Ta=25°C) Sym [ ... ]

S9014 PDF Datasheet Download