Manufacturer Part No: LM1117T
Package / Case: TO-220
Datasheet: Click Here
Regulator Topology Positive Fixed
Regulator Type Linear
Output Voltage 3.3V
Feature Low Dropout
These work greatThese are good for xbee radios
cheap 3.3v conversionWorked fine for me. Converts 5V DC to 3.3v DC, with three parts total.
It just needed a 10uF cap on the input and one on the output.
See ref. schematic in the LM1117 datasheet.