Recently I've been using IRLZ44N; a logic level mosfet. I have been passing 9v, 1.6A to the mosfet. I did not use any pwm.
The mosfet is connected to pin arduino D10 and a 10k resistor between gate and source.
The mosfet got up to 65 degC which I think it is high comparing to the theoretical calculations.
RdsOn @ 5Vdc is 25 mOhm
Power dissipate is 0.064 W (P = I2R)
Temperature rise should be around 4 degC (P * Rja) + ambient
Hope you all could give me some advices. Thanks alot.