Thanks for all the answer,
I use 5v Arduino
i have no data sheet. Took my voltmeter and i got between 2.2ohm and 1.9 ohm on the motor. so the stall current would be 3V ?
Also they all have sevral RDS on the file LarryD provided how to choose the 5v one?
On paper IRLML2402 looks good, it has RDS on 4.5V and can take 1.2A...