This part is a kind of semiconductor called 2N2222A.

Function of this product has Small Signal General Purpose Transistors.

Manufacturers : TAITRON

Image and pinout :

Some of the text within the PDF file :

Small Signal General Purpose Transistors (NPN) 2N2221A/2N2222A Small Signal General Purpose Transistors (NPN) Features • Switching and Linear Application DC and VHF Amplifier Application • RoHS Compliant Mechanical Data Case: Terminals: Weight: TO-18, Metal can package Solderable per MIL-STD-202, Method 208 0.35 grams TO-18 Maximum Ratings (T Ambient=25ºC unless noted otherwise) Symbol Description 2N2221A 2N2222A Marking Code 2N2221A 2N2222A VCEO Collector-Emitter Voltage 40 VCBO Collector-Base Voltage 75 VEBO Emitter-Base Voltage 6.0 IC Collector Current Continuous 800 Power Dissipation at TA=25°C PD Derate above 25°C 500 2.28 PD TJ ,TSTG Power Dissipation at TC=25°C Derate above 25°C Operation and Storage Junction Temperature Range 1.2 6.85 -65 to +2 [ ... ]

2N2222A PDF Datasheet Download