From the discussion, you probably won't find a data sheet that you can rely on for these devices.
Assuming that it is a transistor and not an IC or other device, you can use an ohmmeter to determine the pinout. If you use a digital multimeter, use the 'diode test' function.
Connect the positive lead to any pin and check the other pins for low resistance or low diode drop. Rotate the lead connections until you find a connection where one pin has a low resistance to both of the other two. That pin is the base lead. If it is the positive ohmmeter lead, the transistor is NPN. If negative, it is PNP. Call that pin 2.
To determine emitter and collector, do a current gain test: If it is an NPN transistor, connect the negative lead to pin 1 and the positive lead to pin 3. Moisten the tip of your finger and touch it between pin 2 (base) and pin 3. If you see a drop in resistance, pin 1 is most likely the emitter and pin 3 is most likely the collector. (The moisture path allows some trickle of base current from the positive meter lead and turns on the transistor.) If you are not sure, reverse the connections to pins 1 and 3 and repeat. The connection that gives the greatest drop in resistance will have the pos lead on the collector and the neg lead on the emitter.
If it was found to be a PNP transistor, reverse the polarity for the above.
Good luck....
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