Hi, I don't have a great knowledge of electronics and I'm struggling to find the correct Mosfet for my project.

I'm planning to build a PWM board for vaping. The conditions are the following: Battery voltage: 5V-8.4V (2S 18650) Logic level: 3.3V MCU: attiny85

With the MCU, I want to generate a PWM Signal to drive an N-Channel Mosfet which drives a vape atomizer (around 0.2 ohms). The desired frequency is 25kHz.

Through the power of maths, I found out that my current is around 40A.

It's there a fet for my application? What numbers do I have to look for?

Thanks everyone in advance for any help.