TVBGone - 7
An LM2936-3.0 voltage regulator with its capacitors, which will be used to provide a regulated 3.0 V output to the TV-B-Gone, so that a regular 9 V battery can be used instead of the set of three lithium batteries.
The LM2936 is a somewhat fancy (and expensive) regulator; it is used here because it is extremely power efficient, and will help the modified TV-B-Gone to have a long battery life. The input (3.2 V - 40 V) is put on the rightmost pin. The center pin is common (ground) and the left pin is the output, 3.0 V at up to 50 mA.
Read more about TV-B-Gone mods here.