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Quoted from Coyote:Hah - ever hear of a MM2266 transistor (Motorola)? Apparently, Google hasn't either. Redoing this board is going to be rather.. interesting..
The MM prefix may be the manufacturer (Fairchild) and this be an NPN 2266 power transistor.
Quoted from Coyote:Did Fairchild com from Motorola? That one is listed as:
It IS an NPN.. Unfortunately the TI part no has NO hits on google - literally.
Nope, Fairchild, Motorola and Texas Instruments were distinct manufacturers. For old parts that I don't get an immediate hit on using Google, I tend to search the prefix separately from the remainder of the part number. Good luck.
Quoted from Coyote:Thanks man - appreciated! It's an interesting learning experience, at least. The final test will come once I get a new board made and plug it in.
By the way, it looks like the MM prefix may have been shared between Motorola, Fairchild and National Semiconductor: https://en.m.wikibooks.org/wiki/Practical_Electronics/Manufacturers_Prefix
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