Hi,
If you still haven't found any information yet, if possible try posting a photo of the transistor, it gives people a lot more clues. I searched but like you found nothing except for a voltage regulator that was described as "house numbered" 31045, it coincides with: National Semiconductor LM2930T. And National is now a part of TI, but the part doesn't seem to be in their products.
It's hard from a description, as in a worst case, that 014 could be the year and M05AF could even refer to the month of manufacture of your device, and the same goes for 31045.
Post a photo! Some-one will try to identify it or maybe know it.