Vishay MKP1845422105 vs MKP18454221051

The difference between the two parts is the lead length.

MKP1845422105
https://www.digikey.com/short/z012q5

MKP 220nF ±10% 1000Vdc AXIAL ENCASED , loose packaging

Normal wire length 40±5mm

MKP18454221051
https://www.digikey.com/short/z012qt

220nF ±10% 1000Vdc axial, loose packaging

Special wire length 41+10mm