P2N2222AG
http://4.bp.blogspot.com/-rxS57z6Xfaw/TdoS2zXjA8I/AAAAAAAAA_I/1D8nVfbqkZM/s1600/P2N2222A+Pinning.png
emitter == GND
IR333C (IR LED)
longer leg = + (anode)
http://wyxs.net/web/wiimote/digital_whiteboard/symbol_led.jpg
