Need help in identifying this transistor

Support
1

3Q on top and 1A at the bottom for the markings

20260327_125022
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2

Looks like you have a SOT89 package type.

I have been unable to identify a match to that part marking.

3

Would this be the part

Screenshot_20260327_141319_Chrome
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Screenshot_20260327_141327_Chrome
Screenshot_20260327_141327_Chrome1440×3120 277 KB

4

Unable to determine. The marking doesn’t follow their Production Date code format.

5

Hi, Kristof_2649.

I dare to suggest that this is - TL431QPK from TI company.

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TL431QPK

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6

If it helps I got the measurements of voltage 2.5v on pin1 GND (0v) pin2 and 5V in pin 3