I am using MOSFET as diode for polarity protection of system. Vehicle supply of 12V is applied to drain & system is connected to source. Gate kept open purpose. I have simulated attached schematic on LTSPICE with following graph as output. It works as diode as expected even if gate is floating.
I want to know what will happen in real case if gate is kept open / floating?
I have modified circuit referred in Application Note to check how circuit works in simulation
Application Note: Infineon - enter link description here
Part No. (RRS140P03FRA) - P Channel Enhancement type MOSFET