Super high dense cell design for low RDS(ON). Rugged and reliable. TO-220 and TO-220F Package. D GDS SDP SERIES TO-220 GDS SDF SERIES TO-220F G S ORDERING INFORMATION Ordering Code Package SDP18N50HZ TO-220 SDP18N50PZ TO-220 SDF18N50HZ TO-220F SDF18N50PZ TO-220F Marking Code SDP18N50.