Design parameters:

Solenoid (527-1024-ND):

Operating voltage: 12V,Power: 6WMinimum drain current to operate the solenoid is

MOSFET (AON1620 or FDN 327N) (n-channel):

Specifications for MOSFET-AON1620:Drain to source voltage: 12V

Average drain current 4A at

Specifications for FDN 327N:

Diode:

This diode is used as fly back diode which is used to eliminate the sudden peak in the inductive loads. 1N4001 is preferred for this purpose.

Resistance:This resistance is used to control the gate current flows through the MOSFET.

80 to 1000 Ω is preferred for this purpose.