Si-N+Di+R 1500V 10A 50W 0,3uS ISOWATT-218FX. Cross Reference: 1803DFX 1803DHI MD1803DF ST1803DFX ST1803DHI, Cross Reference: 1802DFX MD1802DFX ST1803DFI ST1803DHI, equivalent / similar replacement for MD1802DFI ST1802DFX.