I want to know if I can use this AO3401A P-Channel mosfet instead of this SI2301 P-Channel mosfet.
I checked the datasheets and these are the values which I know are important:
Drain-Source Voltage: -20V
Gate-Source Voltage: ±8V
Continuous Drain Current: -2.3A
Pulsed Drain Current: -10A
Drain-Source Breakdown Voltage: -20V
Gate-Threshold Voltage: -0.45V
Drain-Source Voltage: -30V
Gate-Source Voltage: ±12V
Continuous Drain Current: -4A
Pulsed Drain Current: -27A
Drain-Source Breakdown Voltage: -30V
Gate-Threshold Voltage: -0.5V -- -0.9V -- -1.3V
Not enough information. The Rds(on) at Vgs=?V specification is vital - what gate voltage is
needed to switch each MOSFET on? The threshold voltage is basically irrelevant for using a
MOSFET as a switch.
What gate voltage do you need the MOSFET to work at? That's key information.
Those gate-source voltages you quote appear to be absolute maximum voltages - 8V
for an absolute maximum is very low, implying its not designed to work at 5V, not
reallly enough safety margin.