These are standard To-92 NPN 2N2222A transistors for general purposes.
This is a good general-purpose transformer for switching.
Very good to prototyping using boards on microcontroller.

Note:
The "****" in model number "2N2222A****" only represents the product serial number, has nothing to do with product performance.
With the flat face of transistor toward you with pins down, the terminals are as follows from left to right: Emitter, Base, Collector. This should be true for all transistors in the TO-92 case.

Parameter:
Type : NPN
Model : 2N2222A
Package type : TO-92
VCBO: 60V
VCEO: 30V
IC: 0.6A
PC: 625mW
Black Body Size: 4.5mm x 3mm x 4.5mm
Pin Diameter: 0.4mm

Package Content:
25 x NPN Transistors