This part is a kind of semiconductor called 2N2223.
Function of this product has DUAL NPN TRANSISTORS.
Manufacturers : Central Semiconductor
Image and pinout :

Some of the text within the PDF file :
2N2223 2N2223A SILICON DUAL NPN TRANSISTORS w w w. c e n t r a l s e m i . c o m DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N2223 and 2N2223A are dual silicon NPN transistors manufactured by the epitaxial planar process utilizing two individual chips mounted in a hermetically sealed metal case designed for differential amplifier applications. MARKING: FULL PART NUMBER TO-78 CASE MAXIMUM RATINGS: (TA=25°C) Collector-Base Voltage Collector-Emitter Voltage Collector-Emitter Voltage Emitter-Base Voltage Continuous Collector Current Power Dissipation (One Die) Power Dissipation (Both Dice) Operating and Storage Junction Temperature SYMBOL VCBO VCER VCEO VEBO IC PD PD TJ, Tstg 100 80 60 7.0 500 500 600 -65 to +200 UNITS V V V V mA mW mW °C ELECTRICAL CHARACTERISTICS PER TRANSISTOR: (TA=25 [ ... ]
2N2223 PDF Datasheet Download
