LTSPICE advice

[Mosaic]

Hi all:
I am simulating this NFET polarity protector for a battery operated circuit.
Somehow the spice shows current conducting with the battery (voltage source) in reverse polarity, can anyone clear this up?

The sim does both configs , the left sim. is fine, the right confuses me by conducting.


thx!

 

[alec_t]

In the right-hand circuit there is conduction through the FET body diode (from source to drain).
Google 'fet body diode' for images showing that.

 

[Mosaic]

Ok, I made a mistake , the Drain/Source was swapped.
Works now