SMD Transistor Identification

Thread Starter


Joined Mar 30, 2020
Hello, I need some assistance identifying this smd component on an LCD inverter.
It is marked DK and then QM right below it. I have another identical board which is a newer revision and the same part is marked DK however with QS below it.
My preliminary research on s-manuals seems to indicate this is an SOT-89 package, PNP. However lists multiple possible part mumbers.
Searching for QM yields nothing SOT-89, QS shows one more similar SOT-89
Any insight as to what exactly I am looking for would be greatly appreciated.



Joined Jan 21, 2019
DK and Q is the important bit, plus that it’s SOT89. Q is the hFE designator (120-270)

it’s 2SC4672 which is NPN low frequency RF transistor (~200 MHz)