Trying to repair my ECU.

MoparMike1974 said

A 3055 is a standard transistor. Been around for decades.

NTD3055L104T4G ON Semiconductor | Discrete Semiconductor Products | DigiKey

When you remove the old one, desolder the small legs first then the tab.
Hot air or an iron to solder.

Click to expand...

So that's It? Nothing too special? I didn't know if there were different amp ratings or something. This is above my knowledge. Replacing it won't be bad, I've done similar work before.