NKE0305DC (Murata Power Solutions) is an isolated sub-miniature 1 W single-output DC-DC converter in a DIP package.

• 3.3 V nominal input · 5 V output at 200 mA
• 75 % typical efficiency
• 3 kVDC isolation (1-second flash test)
• Full 1 W load operation from −40 °C to 85 °C · 115 kHz switching frequency

Data per Murata Power Solutions NKE datasheet.