XP Power QSB400 400W Isolated DC-DC Converter PCB Mount, Vin 18 → 75 V dc, Vout 12V dc, I/O isolation 1.5kV dc. Input Voltage Nominal: 48 V dc. Output Current: 33.3A. Package: Brick. Efficiency: 0.885. Minimum Temperature: -40°C. Maximum Temperature: +100°C. Load Regulation: 0.5. Line Regulation: 0.2. Application: Military Market. MPN: QSB40048S12