So, I burned my servo and I need to know the name of this component under the servo pcb to see if it's worth buying a new one or if I should buy a new Servo
Which component are you referring to? There are quite a few in that picture. Get your magnifying glass out and see if any component has identifying markings on it.
How much did that servo cost you? I ask because the price range is quite wide. I might attempt to repair a high-priced servo but in most cases, I'd just buy another one (and probably not the same brand and model that just failed on me)
It cost R$20,00 (4 dollars). doesn't seem much but for a servo it's quite expensive here in Brazil.
I searched on the internet and couldn't find anything about this component
Actually it was my fault, I switched VCC and GND
What is yor servo model? (Or a link that show your servo datasheet).
It's a SG90, the most common servo
Can you get a better deal on a new one by buying a kit with other components? The price for you is the price, what I mean is, what would be the price of replacing and attempting repair on the servo in terms of time and currency, without being certain the repair would even work?
Are you sure you ruined the servo? Does that chip smell burnt to you? How were you powering it?
I ask because I've accidentally reversed VCC and GND on a servo before and had them survive it.
I opened one of my servos and on the chip it says CM7YOC1.
I also saw that on the other side of the PCB there is another IC.
Thanks to everyone, but I will just buy a new Servo.
With the help of my phone's flashlight I could read it: TC118AH. And it costs more than a new Servo because of shipping and taxes.
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Join the club...but don't do it no more. 
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