The D882 is a medium power NPN transistor that features a high collector-emitter breakdown voltage and medium current carrying capability. It can also be mounted on a heatsink using the screw hole in the SOT-32 package.
The BC488 is a PNP Transistor in a TO-92 package, that has a VCE of -60V and a collector current of -1000mA or -1A. It can be used as a small signal switching transistor.
The 2N3702 is a PNP Transistor with VCE of -25V and a collector current of 500mA. It can be used as a small signal switching transistor and any other small-signal application.