Help with SMB BJT identification?

3-terminal (well 4, including the tab) SOT-89/TO-243 (4.5 x 2.5 mm) package.
Marked: 2108A 2216/36
Thanks.

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Well, ?BJT? may be a misnomer. Don?t know what it is...
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DaveC schrieb:

Probably.
Maybe it's a MicrOne ME2108A - a switching regulator. PDFs may be available only with chinese (or the like) text...
Tilmann
P.S. Google for SOT89 2108A to get some results...
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Thanks Tilmann. Found a useful datasheet:
http://img.ozdisan.com/ETicaret_Dosya/431770_1622138.pdf
The example for the 2108A in the datasheet duplicates the one in my circuit.
Cheers.
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